Added emulator as submodule, updated makefile to run directly os in emulator

TODO: Fix external dependency

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "pat80-emulator/z80-python-emulator"]
+	path = pat80-emulator/z80-python-emulator
+	url = https://github.com/penguin86/z80-python-emulator.git

NOTES.md

@@ -0,0 +1,47 @@
+# Software utilizzato
+Compilatore assembly: z80asm (da repo debian)
+Compilatore c: sdcc (da repo debian)
+Eeprom flash: minipro (da https://gitlab.com/DavidGriffith/minipro/)
+Disegnatore schemi logici: logisim (jar da sourceforge)
+    Per usarlo su hdpi: `java -Dsun.java2d.uiScale=2 -jar logisim-generic-2.7.1.jar`
+Disegnatore circuiti: fritzing (da repo debian)
+
+# Assembly
+## Deploy
+### Compilare assembly:
+`z80asm -i hd44780_lcd_test_procedure.asm -o rom.bin`
+### Portare binario alla dimensione dell eeprom:
+`dd if=/dev/zero of=rom.bin bs=1 count=0 seek=8192`
+### Scrivere su EEPROM:
+`minipro -w rom.bin -p "AT28C64B"`
+### Leggere EEPROM:
+`minipro -r rom_read.bin -p "AT28C64B"`
+## Istruzioni
+### Dichiarare una variabile:
+Usare EQU per assegnare una posizione di memoria nota (nella RAM) al nome variabile.
+```
+myVar: EQU 0x800F   ; init variable
+ld hl, "A"          ; load value into register
+ld (myVar), hl      ; copy value into variable
+```
+NB: Se il programma si blocca, verificare che la variabile non sia stata dichiarata in una parte non scrivibile della memoria (ROM)
+### Accedere ad una variabile
+Modificarne il valore (nell'esempio: incrementarla di 1)
+```
+ld a, (myVar)
+inc a
+ld (myVar), a
+```
+Passarne il puntatore ad una funzione:
+```
+ld bc, myVar
+call lcd_print
+```
+### Segmentation fault
+Controllare che non si stia puntando ad un registro con le parentesi:
+`ld (ix), a`
+
+# C
+## Deploy
+### Compilare c:
+`sdcc -mz80 test.c`

README.md

@@ -1,47 +1,72 @@
-# Software utilizzato
+# Pat80
-Compilatore assembly: z80asm (da repo debian)
-Compilatore c: sdcc (da repo debian)
-Eeprom flash: minipro (da https://gitlab.com/DavidGriffith/minipro/)
-Disegnatore schemi logici: logisim (jar da sourceforge)
-    Per usarlo su hdpi: `java -Dsun.java2d.uiScale=2 -jar logisim-generic-2.7.1.jar`
-Disegnatore circuiti: fritzing (da repo debian)
 
-# Assembly
+![Pat80 Home Computer Logo](/assets/media/pat80-banner-colour-raster.png)
-## Deploy
-### Compilare assembly:
-`z80asm -i hd44780_lcd_test_procedure.asm -o rom.bin`
-### Portare binario alla dimensione dell eeprom:
-`dd if=/dev/zero of=rom.bin bs=1 count=0 seek=8192`
-### Scrivere su EEPROM:
-`minipro -w rom.bin -p "AT28C64B"`
-### Leggere EEPROM:
-`minipro -r rom_read.bin -p "AT28C64B"`
-## Istruzioni
-### Dichiarare una variabile:
-Usare EQU per assegnare una posizione di memoria nota (nella RAM) al nome variabile.
-```
-myVar: EQU 0x800F   ; init variable
-ld hl, "A"          ; load value into register
-ld (myVar), hl      ; copy value into variable
-```
-NB: Se il programma si blocca, verificare che la variabile non sia stata dichiarata in una parte non scrivibile della memoria (ROM)
-### Accedere ad una variabile
-Modificarne il valore (nell'esempio: incrementarla di 1)
-```
-ld a, (myVar)
-inc a
-ld (myVar), a
-```
-Passarne il puntatore ad una funzione:
-```
-ld bc, myVar
-call lcd_print
-```
-### Segmentation fault
-Controllare che non si stia puntando ad un registro con le parentesi:
-`ld (ix), a`
 
-# C
+Pat80 Home Computer is an attempt to develop the simplest possible Zilog Z80 based computer in 2021.
-## Deploy
+
-### Compilare c:
+## Hardware
-`sdcc -mz80 test.c`
+Instead of being another single board computer, Pat80 focuses on modularity:
+- The Core board contains Z80 CPU, 32k ram, 32k rom, memory and I/O decoding logic
+- The Backplane is a stupid I/O bus board with no active components, 1 socket for the Core board and 8 sockets for I/O boards
+- Each I/O board must implement tri-state and go to high impedance according to its EN pin to avoid bus contention
+- The Power Supply module contains a 7805-based linear power supply capable of delivering 1A @5v for the core and I/O boards
+
+Here is a picture of the early stages of development:
+
+![Pat80 Breadboard prototype](/assets/media/photos/breadboard.jpg)
+
+### I/O Boards
+
+#### Parallel terminal interface
+A parallel terminal based on Arduino is used for development purposes and will be replaced by an UART card.
+
+#### Keyboard controller
+Pat80 features a blue-switches mechanical matrix keyboard, seen by the system as a memory area in I/O space. The keyboard doesn't use interrupts and is polled by the OS.
+
+#### Video controller
+The monochrome 368x248 pixels video output is software-generated by an ATMega 1284 MCU. The timings are generated by the MCU's 16 bit internal timer and the vertical sync time is used to update the framebuffer.
+
+
+## Software
+The OS is a simple Memory Monitor. It can show memory content in hex and ascii with the typical hex editor tabular view.
+Programs can be loaded from the keyboard, writing Z80 opcodes and data in hex. The program can be executed from any ram position and the Memory Monitor can be brought to screen in any moment issuing an INT signal (the Z80 INT pin should be connected to a button with pull-up resistor).
+There is an experimental and unfinished quick load function using a python terminal to load a binary file directly to memory and execute it.
+
+![Pat80 Memory Monitor](/assets/media/photos/memory_monitor.jpg)
+
+## Emulator
+The pat80 memory monitor (the os) can be run in a z80 emulator. This repository contains an emulator as submodule, already set up to run the os.
+To try it, head to `pat80-computer/software/z80-assembly/os/Makefile` and run `make run` to build the rom from assembly and start the emulator. You will see some windows showing the emulated computer's memory and register status and the pat80 memory monitor prompt.
+
+![Emulator running Memory Monitor](/assets/media/photos/emulator.png)
+
+## Status
+The project is heavily work in progress.
+
+### Working
+- Core board
+- Sound board
+- Arduino parallel terminal with its own Python companion script (or any UART terminal)
+
+The only fully working configuration as now is the Core board with two devices hooked to its I/O bus: the Arduino Parallel Terminal (see `pat80-io-devices/parallel-terminal` and `pat80-computer/software/z80-assembly/os/drivers/arduino_terminal.asm`) and the SN76489 sound chip (see `pat80-computer/software/z80-assembly/os/drivers/hd44780.asm`)
+
+### Partially working
+The keyboard is only partially tested, as it's not completed.
+
+![Pat80 keyboard pcb](/assets/media/photos/keyboard_before_etching.jpg)
+
+![Pat80 keyboard layout](/assets/media/photos/keyboard_layout.jpg)
+
+The composite video card is partially working, but has some nasty bugs on text cursor positioning and the graphics mode is not yet implemented (the only way to output graphics ATM is to place the bitmap in the MCU flash and load it to VRAM manually).
+
+![Pat80 composite monitor text mode](/assets/media/photos/composite_text.jpg)
+
+![Pat80 composite monitor graphics mode](/assets/media/photos/composite_graphics.jpg)
+
+For the moment, better to stick with the Arduino Parallel Terminal.
+
+### Not working
+All the rest
+
+## License
+All the project is under GPL v3 license

assets/README.md

@@ -1,2 +1,3 @@
 # Assets
-This folder contains all the media assets for presenting Pat80 to the web, print and other media 
+This folder contains all the media and text assets for presenting Pat80 to the web, print and other media
+

assets/media/LICENSE.md

@@ -0,0 +1,18 @@
+# Assets
+This folder contains all the media assets for presenting Pat80 to the web, print and other media
+
+## License
+All files contained in this folder are part of Pat80 Assets.
+
+Pat80 Assets is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Assets is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Assets.  If not, see <http://www.gnu.org/licenses/>.

kicad-symbols/LICENSE.md

@@ -0,0 +1,18 @@
+# Kicad symbols
+This folder contains the custom symbols required by Pat80 schematics and PCB layouts.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

kicad-symbols/footprints.pretty/SW_TH_DPDT_Pushbutton_Latched.kicad_mod

@@ -0,0 +1,18 @@
+(module SW_TH_DPDT_Pushbutton_Latched (layer F.Cu) (tedit 6066BDE4)
+  (fp_text reference SW54 (at 0 0.5) (layer F.SilkS)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_text value CAPSLK (at 0 -0.5) (layer F.Fab)
+    (effects (font (size 1 1) (thickness 0.15)))
+  )
+  (fp_line (start -4 2) (end 4 2) (layer F.SilkS) (width 0.12))
+  (fp_line (start 4 2) (end 4 10) (layer F.SilkS) (width 0.12))
+  (fp_line (start 4 10) (end -4 10) (layer F.SilkS) (width 0.12))
+  (fp_line (start -4 10) (end -4 2) (layer F.SilkS) (width 0.12))
+  (pad 5 thru_hole circle (at 2.54 3.429) (size 1.524 1.524) (drill 0.762) (layers *.Cu *.Mask))
+  (pad 6 thru_hole circle (at 2.54 5.969) (size 1.524 1.524) (drill 0.762) (layers *.Cu *.Mask))
+  (pad 4 thru_hole circle (at 2.54 8.509) (size 1.524 1.524) (drill 0.762) (layers *.Cu *.Mask))
+  (pad 2 thru_hole circle (at -2.54 8.509) (size 1.524 1.524) (drill 0.762) (layers *.Cu *.Mask))
+  (pad 3 thru_hole circle (at -2.54 5.969) (size 1.524 1.524) (drill 0.762) (layers *.Cu *.Mask))
+  (pad 1 thru_hole circle (at -2.54 3.429) (size 1.524 1.524) (drill 0.762) (layers *.Cu *.Mask))
+)

kicad-symbols/pat80.dcm

@@ -0,0 +1,3 @@
+EESchema-DOCLIB  Version 2.0
+#
+#End Doc Library

kicad-symbols/pat80.lib

@@ -0,0 +1,4 @@
+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+#End Library

pat80-computer/hardware/LICENSE.md

@@ -0,0 +1,18 @@
+# Hardware
+This folder contains the Pat80 logic definitions, schematics and PCB layouts.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

pat80-computer/hardware/logisim/LICENSE.md

@@ -0,0 +1,21 @@
+# Memory Decoding logic
+This folder contains the memory decoding logic used by Pat80.
+The memory map is a simple 32k ram / 32k rom obtained using the MSB as EN signal.
+The I/O space is split in 8 devices (each with 32 registers).
+Pat80 doesn't use the [high address lines I/O hack](https://retrocomputing.stackexchange.com/questions/7782/z80-16-bit-i-o-port-addresses) but adheres to the official Z80 I/O documentation.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

pat80-computer/hardware/schematics/pat80/LICENSE.md

@@ -0,0 +1,18 @@
+# Hardware
+This folder contains the Pat80 schematics and PCB layouts.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

pat80-computer/hardware/schematics/pat80/pat80-cache.lib

@@ -0,0 +1,566 @@
+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+# 74xx_74HC04
+#
+DEF 74xx_74HC04 U 0 40 Y Y 7 L N
+F0 "U" 0 50 50 H V C CNN
+F1 "74xx_74HC04" 0 -50 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS 74HC14 74HC04 74LS14
+$FPLIST
+ DIP?14*
+$ENDFPLIST
+DRAW
+S -200 300 200 -300 7 1 10 f
+P 4 1 0 10 -150 150 -150 -150 150 0 -150 150 f
+P 4 2 0 10 -150 150 -150 -150 150 0 -150 150 f
+P 4 3 0 10 -150 150 -150 -150 150 0 -150 150 f
+P 4 4 0 10 -150 150 -150 -150 150 0 -150 150 f
+P 4 5 0 10 -150 150 -150 -150 150 0 -150 150 f
+P 4 6 0 10 -150 150 -150 -150 150 0 -150 150 f
+X ~ 1 -300 0 150 R 50 50 1 0 I
+X ~ 2 300 0 150 L 50 50 1 0 O I
+X ~ 3 -300 0 150 R 50 50 2 0 I
+X ~ 4 300 0 150 L 50 50 2 0 O I
+X ~ 5 -300 0 150 R 50 50 3 0 I
+X ~ 6 300 0 150 L 50 50 3 0 O I
+X ~ 8 300 0 150 L 50 50 4 0 O I
+X ~ 9 -300 0 150 R 50 50 4 0 I
+X ~ 10 300 0 150 L 50 50 5 0 O I
+X ~ 11 -300 0 150 R 50 50 5 0 I
+X ~ 12 300 0 150 L 50 50 6 0 O I
+X ~ 13 -300 0 150 R 50 50 6 0 I
+X VCC 14 0 500 200 D 50 50 7 0 W
+X GND 7 0 -500 200 U 50 50 7 0 W
+ENDDRAW
+ENDDEF
+#
+# 74xx_74HC244
+#
+DEF 74xx_74HC244 U 0 40 Y Y 1 L N
+F0 "U" -300 650 50 H V C CNN
+F1 "74xx_74HC244" -300 -650 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS 74HCT244
+$FPLIST
+ TSSOP*4.4x6.5mm*P0.65mm*
+ SSOP*4.4x6.5mm*P0.65mm*
+$ENDFPLIST
+DRAW
+S -300 600 300 -600 1 1 10 f
+P 4 1 0 6 50 0 -50 50 -50 -50 50 0 N
+X 1OE 1 -500 -400 200 R 50 50 1 0 I I
+X GND 10 0 -800 200 U 50 50 1 0 W
+X 2A3 11 -500 -200 200 R 50 50 1 0 I
+X 1Y3 12 500 200 200 L 50 50 1 0 O
+X 2A2 13 -500 -100 200 R 50 50 1 0 I
+X 1Y2 14 500 300 200 L 50 50 1 0 O
+X 2A1 15 -500 0 200 R 50 50 1 0 I
+X 1Y1 16 500 400 200 L 50 50 1 0 O
+X 2A0 17 -500 100 200 R 50 50 1 0 I
+X 1Y0 18 500 500 200 L 50 50 1 0 O
+X 2OE 19 -500 -500 200 R 50 50 1 0 I I
+X 1A0 2 -500 500 200 R 50 50 1 0 I
+X VCC 20 0 800 200 D 50 50 1 0 W
+X 2Y0 3 500 100 200 L 50 50 1 0 O
+X 1A1 4 -500 400 200 R 50 50 1 0 I
+X 2Y1 5 500 0 200 L 50 50 1 0 O
+X 1A2 6 -500 300 200 R 50 50 1 0 I
+X 2Y2 7 500 -100 200 L 50 50 1 0 O
+X 1A3 8 -500 200 200 R 50 50 1 0 I
+X 2Y3 9 500 -200 200 L 50 50 1 0 O
+ENDDRAW
+ENDDEF
+#
+# 74xx_74HC245
+#
+DEF 74xx_74HC245 U 0 40 Y Y 1 L N
+F0 "U" -300 650 50 H V C CNN
+F1 "74xx_74HC245" -300 -650 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS 74HC245
+$FPLIST
+ DIP?20*
+$ENDFPLIST
+DRAW
+S -300 600 300 -600 1 1 10 f
+P 3 1 0 0 -25 -50 -25 50 25 50 N
+P 4 1 0 0 -50 -50 25 -50 25 50 50 50 N
+X A->B 1 -500 -400 200 R 50 50 1 0 I
+X GND 10 0 -800 200 U 50 50 1 0 W
+X B7 11 500 -200 200 L 50 50 1 0 T
+X B6 12 500 -100 200 L 50 50 1 0 T
+X B5 13 500 0 200 L 50 50 1 0 T
+X B4 14 500 100 200 L 50 50 1 0 T
+X B3 15 500 200 200 L 50 50 1 0 T
+X B2 16 500 300 200 L 50 50 1 0 T
+X B1 17 500 400 200 L 50 50 1 0 T
+X B0 18 500 500 200 L 50 50 1 0 T
+X CE 19 -500 -500 200 R 50 50 1 0 I I
+X A0 2 -500 500 200 R 50 50 1 0 T
+X VCC 20 0 800 200 D 50 50 1 0 W
+X A1 3 -500 400 200 R 50 50 1 0 T
+X A2 4 -500 300 200 R 50 50 1 0 T
+X A3 5 -500 200 200 R 50 50 1 0 T
+X A4 6 -500 100 200 R 50 50 1 0 T
+X A5 7 -500 0 200 R 50 50 1 0 T
+X A6 8 -500 -100 200 R 50 50 1 0 T
+X A7 9 -500 -200 200 R 50 50 1 0 T
+ENDDRAW
+ENDDEF
+#
+# 74xx_74LS138
+#
+DEF 74xx_74LS138 U 0 40 Y Y 1 L N
+F0 "U" -300 450 50 H V C CNN
+F1 "74xx_74LS138" -300 -550 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DIP?16*
+$ENDFPLIST
+DRAW
+S -300 400 300 -500 1 1 10 f
+X A0 1 -500 300 200 R 50 50 1 0 I
+X O5 10 500 -200 200 L 50 50 1 0 O V
+X O4 11 500 -100 200 L 50 50 1 0 O V
+X O3 12 500 0 200 L 50 50 1 0 O V
+X O2 13 500 100 200 L 50 50 1 0 O V
+X O1 14 500 200 200 L 50 50 1 0 O V
+X O0 15 500 300 200 L 50 50 1 0 O V
+X VCC 16 0 600 200 D 50 50 1 0 W
+X A1 2 -500 200 200 R 50 50 1 0 I
+X A2 3 -500 100 200 R 50 50 1 0 I
+X E1 4 -500 -400 200 R 50 50 1 0 I L
+X E2 5 -500 -300 200 R 50 50 1 0 I L
+X E3 6 -500 -200 200 R 50 50 1 0 I
+X O7 7 500 -400 200 L 50 50 1 0 O V
+X GND 8 0 -700 200 U 50 50 1 0 W
+X O6 9 500 -300 200 L 50 50 1 0 O V
+ENDDRAW
+ENDDEF
+#
+# 74xx_74LS32
+#
+DEF 74xx_74LS32 U 0 40 Y Y 5 L N
+F0 "U" 0 50 50 H V C CNN
+F1 "74xx_74LS32" 0 -50 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DIP?14*
+$ENDFPLIST
+DRAW
+A -360 0 258 354 -354 1 1 10 N -150 150 -150 -150
+A -47 -52 204 150 837 1 1 10 f 150 0 -24 150
+A -47 52 204 -150 -837 1 1 10 f 150 0 -24 -150
+A -360 0 258 354 -354 2 1 10 N -150 150 -150 -150
+A -47 -52 204 150 837 2 1 10 f 150 0 -24 150
+A -47 52 204 -150 -837 2 1 10 f 150 0 -24 -150
+A -360 0 258 354 -354 3 1 10 N -150 150 -150 -150
+A -47 -52 204 150 837 3 1 10 f 150 0 -24 150
+A -47 52 204 -150 -837 3 1 10 f 150 0 -24 -150
+A -360 0 258 354 -354 4 1 10 N -150 150 -150 -150
+A -47 -52 204 150 837 4 1 10 f 150 0 -24 150
+A -47 52 204 -150 -837 4 1 10 f 150 0 -24 -150
+A 0 0 150 -899 899 1 2 10 f 0 -150 0 150
+A 0 0 150 -899 899 2 2 10 f 0 -150 0 150
+A 0 0 150 -899 899 3 2 10 f 0 -150 0 150
+A 0 0 150 -899 899 4 2 10 f 0 -150 0 150
+S -200 300 200 -300 5 1 10 f
+P 2 1 1 10 -150 -150 -25 -150 f
+P 2 1 1 10 -150 150 -25 150 f
+P 12 1 1 -1000 -25 150 -150 150 -150 150 -140 134 -119 89 -106 41 -103 -10 -109 -59 -125 -107 -150 -150 -150 -150 -25 -150 f
+P 2 2 1 10 -150 -150 -25 -150 f
+P 2 2 1 10 -150 150 -25 150 f
+P 12 2 1 -1000 -25 150 -150 150 -150 150 -140 134 -119 89 -106 41 -103 -10 -109 -59 -125 -107 -150 -150 -150 -150 -25 -150 f
+P 2 3 1 10 -150 -150 -25 -150 f
+P 2 3 1 10 -150 150 -25 150 f
+P 12 3 1 -1000 -25 150 -150 150 -150 150 -140 134 -119 89 -106 41 -103 -10 -109 -59 -125 -107 -150 -150 -150 -150 -25 -150 f
+P 2 4 1 10 -150 -150 -25 -150 f
+P 2 4 1 10 -150 150 -25 150 f
+P 12 4 1 -1000 -25 150 -150 150 -150 150 -140 134 -119 89 -106 41 -103 -10 -109 -59 -125 -107 -150 -150 -150 -150 -25 -150 f
+P 4 1 2 10 0 150 -150 150 -150 -150 0 -150 f
+P 4 2 2 10 0 150 -150 150 -150 -150 0 -150 f
+P 4 3 2 10 0 150 -150 150 -150 -150 0 -150 f
+P 4 4 2 10 0 150 -150 150 -150 -150 0 -150 f
+X VCC 14 0 500 200 D 50 50 5 0 W
+X GND 7 0 -500 200 U 50 50 5 0 W
+X ~ 1 -300 100 170 R 50 50 1 1 I
+X ~ 2 -300 -100 170 R 50 50 1 1 I
+X ~ 3 300 0 150 L 50 50 1 1 O
+X ~ 4 -300 100 170 R 50 50 2 1 I
+X ~ 5 -300 -100 170 R 50 50 2 1 I
+X ~ 6 300 0 150 L 50 50 2 1 O
+X ~ 10 -300 -100 170 R 50 50 3 1 I
+X ~ 8 300 0 150 L 50 50 3 1 O
+X ~ 9 -300 100 170 R 50 50 3 1 I
+X ~ 11 300 0 150 L 50 50 4 1 O
+X ~ 12 -300 100 170 R 50 50 4 1 I
+X ~ 13 -300 -100 170 R 50 50 4 1 I
+X ~ 1 -300 100 150 R 50 50 1 2 I I
+X ~ 2 -300 -100 150 R 50 50 1 2 I I
+X ~ 3 300 0 150 L 50 50 1 2 O I
+X ~ 4 -300 100 150 R 50 50 2 2 I I
+X ~ 5 -300 -100 150 R 50 50 2 2 I I
+X ~ 6 300 0 150 L 50 50 2 2 O I
+X ~ 10 -300 -100 150 R 50 50 3 2 I I
+X ~ 8 300 0 150 L 50 50 3 2 O I
+X ~ 9 -300 100 150 R 50 50 3 2 I I
+X ~ 11 300 0 150 L 50 50 4 2 O I
+X ~ 12 -300 100 150 R 50 50 4 2 I I
+X ~ 13 -300 -100 150 R 50 50 4 2 I I
+ENDDRAW
+ENDDEF
+#
+# CPU_Z80CPU
+#
+DEF CPU_Z80CPU U 0 40 Y Y 1 F N
+F0 "U" -550 1400 50 H V L CNN
+F1 "CPU_Z80CPU" 250 1400 50 H V L CNN
+F2 "" 0 400 50 H I C CNN
+F3 "" 0 400 50 H I C CNN
+$FPLIST
+ DIP*
+ PDIP*
+$ENDFPLIST
+DRAW
+S -550 1350 550 -1350 0 1 10 f
+X A11 1 700 100 150 L 50 50 1 1 O
+X D6 10 700 -1100 150 L 50 50 1 1 B
+X VCC 11 0 1500 150 D 50 50 1 1 W
+X D2 12 700 -700 150 L 50 50 1 1 B
+X D7 13 700 -1200 150 L 50 50 1 1 B
+X D0 14 700 -500 150 L 50 50 1 1 B
+X D1 15 700 -600 150 L 50 50 1 1 B
+X ~INT~ 16 -700 500 150 R 50 50 1 1 I
+X ~NMI~ 17 -700 600 150 R 50 50 1 1 I
+X ~HALT~ 18 -700 -100 150 R 50 50 1 1 O
+X ~MREQ~ 19 -700 -700 150 R 50 50 1 1 O
+X A12 2 700 0 150 L 50 50 1 1 O
+X ~IORQ~ 20 -700 -800 150 R 50 50 1 1 O
+X ~RD~ 21 -700 -500 150 R 50 50 1 1 O
+X ~WR~ 22 -700 -600 150 R 50 50 1 1 O
+X ~BUSACK~ 23 -700 -1200 150 R 50 50 1 1 O
+X ~WAIT~ 24 -700 0 150 R 50 50 1 1 I
+X ~BUSRQ~ 25 -700 -1100 150 R 50 50 1 1 I
+X ~RESET~ 26 -700 1200 150 R 50 50 1 1 I
+X ~M1~ 27 -700 200 150 R 50 50 1 1 O
+X ~RFSH~ 28 -700 100 150 R 50 50 1 1 O
+X GND 29 0 -1500 150 U 50 50 1 1 W
+X A13 3 700 -100 150 L 50 50 1 1 O
+X A0 30 700 1200 150 L 50 50 1 1 O
+X A1 31 700 1100 150 L 50 50 1 1 O
+X A2 32 700 1000 150 L 50 50 1 1 O
+X A3 33 700 900 150 L 50 50 1 1 O
+X A4 34 700 800 150 L 50 50 1 1 O
+X A5 35 700 700 150 L 50 50 1 1 O
+X A6 36 700 600 150 L 50 50 1 1 O
+X A7 37 700 500 150 L 50 50 1 1 O
+X A8 38 700 400 150 L 50 50 1 1 O
+X A9 39 700 300 150 L 50 50 1 1 O
+X A14 4 700 -200 150 L 50 50 1 1 O
+X A10 40 700 200 150 L 50 50 1 1 O
+X A15 5 700 -300 150 L 50 50 1 1 O
+X ~CLK~ 6 -700 900 150 R 50 50 1 1 I C
+X D4 7 700 -900 150 L 50 50 1 1 B
+X D3 8 700 -800 150 L 50 50 1 1 B
+X D5 9 700 -1000 150 L 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
+# Connector_Conn_01x01_Male
+#
+DEF Connector_Conn_01x01_Male J 0 40 Y N 1 F N
+F0 "J" 0 100 50 H V C CNN
+F1 "Connector_Conn_01x01_Male" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*
+$ENDFPLIST
+DRAW
+S 34 5 0 -5 1 1 6 F
+P 2 1 1 6 50 0 34 0 N
+X Pin_1 1 200 0 150 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Connector_Conn_01x02_Male
+#
+DEF Connector_Conn_01x02_Male J 0 40 Y N 1 F N
+F0 "J" 0 100 50 H V C CNN
+F1 "Connector_Conn_01x02_Male" 0 -200 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_1x??_*
+$ENDFPLIST
+DRAW
+S 34 -95 0 -105 1 1 6 F
+S 34 5 0 -5 1 1 6 F
+P 2 1 1 6 50 -100 34 -100 N
+P 2 1 1 6 50 0 34 0 N
+X Pin_1 1 200 0 150 L 50 50 1 1 P
+X Pin_2 2 200 -100 150 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Connector_Generic_Conn_01x26
+#
+DEF Connector_Generic_Conn_01x26 J 0 40 Y N 1 F N
+F0 "J" 0 1300 50 H V C CNN
+F1 "Connector_Generic_Conn_01x26" 0 -1400 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_1x??_*
+$ENDFPLIST
+DRAW
+S -50 -1295 0 -1305 1 1 6 N
+S -50 -1195 0 -1205 1 1 6 N
+S -50 -1095 0 -1105 1 1 6 N
+S -50 -995 0 -1005 1 1 6 N
+S -50 -895 0 -905 1 1 6 N
+S -50 -795 0 -805 1 1 6 N
+S -50 -695 0 -705 1 1 6 N
+S -50 -595 0 -605 1 1 6 N
+S -50 -495 0 -505 1 1 6 N
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 505 0 495 1 1 6 N
+S -50 605 0 595 1 1 6 N
+S -50 705 0 695 1 1 6 N
+S -50 805 0 795 1 1 6 N
+S -50 905 0 895 1 1 6 N
+S -50 1005 0 995 1 1 6 N
+S -50 1105 0 1095 1 1 6 N
+S -50 1205 0 1195 1 1 6 N
+S -50 1250 50 -1350 1 1 10 f
+X Pin_1 1 -200 1200 150 R 50 50 1 1 P
+X Pin_10 10 -200 300 150 R 50 50 1 1 P
+X Pin_11 11 -200 200 150 R 50 50 1 1 P
+X Pin_12 12 -200 100 150 R 50 50 1 1 P
+X Pin_13 13 -200 0 150 R 50 50 1 1 P
+X Pin_14 14 -200 -100 150 R 50 50 1 1 P
+X Pin_15 15 -200 -200 150 R 50 50 1 1 P
+X Pin_16 16 -200 -300 150 R 50 50 1 1 P
+X Pin_17 17 -200 -400 150 R 50 50 1 1 P
+X Pin_18 18 -200 -500 150 R 50 50 1 1 P
+X Pin_19 19 -200 -600 150 R 50 50 1 1 P
+X Pin_2 2 -200 1100 150 R 50 50 1 1 P
+X Pin_20 20 -200 -700 150 R 50 50 1 1 P
+X Pin_21 21 -200 -800 150 R 50 50 1 1 P
+X Pin_22 22 -200 -900 150 R 50 50 1 1 P
+X Pin_23 23 -200 -1000 150 R 50 50 1 1 P
+X Pin_24 24 -200 -1100 150 R 50 50 1 1 P
+X Pin_25 25 -200 -1200 150 R 50 50 1 1 P
+X Pin_26 26 -200 -1300 150 R 50 50 1 1 P
+X Pin_3 3 -200 1000 150 R 50 50 1 1 P
+X Pin_4 4 -200 900 150 R 50 50 1 1 P
+X Pin_5 5 -200 800 150 R 50 50 1 1 P
+X Pin_6 6 -200 700 150 R 50 50 1 1 P
+X Pin_7 7 -200 600 150 R 50 50 1 1 P
+X Pin_8 8 -200 500 150 R 50 50 1 1 P
+X Pin_9 9 -200 400 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_C
+#
+DEF Device_C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "Device_C" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ C_*
+$ENDFPLIST
+DRAW
+P 2 0 1 20 -80 -30 80 -30 N
+P 2 0 1 20 -80 30 80 30 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_Crystal
+#
+DEF Device_Crystal Y 0 40 N N 1 F N
+F0 "Y" 0 150 50 H V C CNN
+F1 "Device_Crystal" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Crystal*
+$ENDFPLIST
+DRAW
+S -45 100 45 -100 0 1 12 N
+P 2 0 1 0 -100 0 -75 0 N
+P 2 0 1 20 -75 -50 -75 50 N
+P 2 0 1 20 75 -50 75 50 N
+P 2 0 1 0 100 0 75 0 N
+X 1 1 -150 0 50 R 50 50 1 1 P
+X 2 2 150 0 50 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_LED
+#
+DEF Device_LED D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "Device_LED" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ LED*
+ LED_SMD:*
+ LED_THT:*
+$ENDFPLIST
+DRAW
+P 2 0 1 8 -50 -50 -50 50 N
+P 2 0 1 0 -50 0 50 0 N
+P 4 0 1 8 50 -50 50 50 -50 0 50 -50 N
+P 5 0 1 0 -120 -30 -180 -90 -150 -90 -180 -90 -180 -60 N
+P 5 0 1 0 -70 -30 -130 -90 -100 -90 -130 -90 -130 -60 N
+X K 1 -150 0 100 R 50 50 1 1 P
+X A 2 150 0 100 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_R
+#
+DEF Device_R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "Device_R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+$ENDFPLIST
+DRAW
+S -40 -100 40 100 0 1 10 N
+X ~ 1 0 150 50 D 50 50 1 1 P
+X ~ 2 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Memory_EEPROM_28C256
+#
+DEF Memory_EEPROM_28C256 U 0 20 Y Y 1 F N
+F0 "U" -300 1050 50 H V C CNN
+F1 "Memory_EEPROM_28C256" 100 -1050 50 H V L CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DIP*W15.24mm*
+ SOIC*7.5x17.9mm*P1.27mm*
+$ENDFPLIST
+DRAW
+S -300 1000 300 -1000 1 1 10 f
+X A14 1 -400 -500 100 R 50 50 1 1 I
+X A0 10 -400 900 100 R 50 50 1 1 I
+X D0 11 400 900 100 L 50 50 1 1 T
+X D1 12 400 800 100 L 50 50 1 1 T
+X D2 13 400 700 100 L 50 50 1 1 T
+X GND 14 0 -1100 100 U 50 50 1 1 W
+X D3 15 400 600 100 L 50 50 1 1 T
+X D4 16 400 500 100 L 50 50 1 1 T
+X D5 17 400 400 100 L 50 50 1 1 T
+X D6 18 400 300 100 L 50 50 1 1 T
+X D7 19 400 200 100 L 50 50 1 1 T
+X A12 2 -400 -300 100 R 50 50 1 1 I
+X ~CS 20 -400 -900 100 R 50 50 1 1 I
+X A10 21 -400 -100 100 R 50 50 1 1 I
+X ~OE 22 -400 -800 100 R 50 50 1 1 I
+X A11 23 -400 -200 100 R 50 50 1 1 I
+X A9 24 -400 0 100 R 50 50 1 1 I
+X A8 25 -400 100 100 R 50 50 1 1 I
+X A13 26 -400 -400 100 R 50 50 1 1 I
+X ~WE 27 -400 -700 100 R 50 50 1 1 I
+X VCC 28 0 1100 100 D 50 50 1 1 W
+X A7 3 -400 200 100 R 50 50 1 1 I
+X A6 4 -400 300 100 R 50 50 1 1 I
+X A5 5 -400 400 100 R 50 50 1 1 I
+X A4 6 -400 500 100 R 50 50 1 1 I
+X A3 7 -400 600 100 R 50 50 1 1 I
+X A2 8 -400 700 100 R 50 50 1 1 I
+X A1 9 -400 800 100 R 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
+# Regulator_Linear_LM7805_TO220
+#
+DEF Regulator_Linear_LM7805_TO220 U 0 10 Y Y 1 F N
+F0 "U" -150 125 50 H V C CNN
+F1 "Regulator_Linear_LM7805_TO220" 0 125 50 H V L CNN
+F2 "Package_TO_SOT_THT:TO-220-3_Vertical" 0 225 50 H I C CIN
+F3 "" 0 -50 50 H I C CNN
+ALIAS LM7806_TO220 LM7808_TO220 LM7809_TO220 LM7810_TO220 LM7812_TO220 LM7815_TO220 LM7818_TO220 LM7824_TO220 LM78M05_TO220 SPX2920U-3.3_TO220 SPX2920U-5.0_TO220 LF15_TO220 LF18_TO220 LF25_TO220 LF33_TO220 LF50_TO220 LF60_TO220 LF80_TO220 LF85_TO220 LF120_TO220 LF47_TO220 LF90_TO220 LM341T-05_TO220 LM341T-12_TO220 LM341T-15_TO220 LM2937xT
+$FPLIST
+ TO?220*
+$ENDFPLIST
+DRAW
+S -200 75 200 -200 0 1 10 f
+X VI 1 -300 0 100 R 50 50 1 1 W
+X GND 2 0 -300 100 U 50 50 1 1 W
+X VO 3 300 0 100 L 50 50 1 1 w
+ENDDRAW
+ENDDEF
+#
+# Switch_SW_Push
+#
+DEF Switch_SW_Push SW 0 40 N N 1 F N
+F0 "SW" 50 100 50 H V L CNN
+F1 "Switch_SW_Push" 0 -60 50 H V C CNN
+F2 "" 0 200 50 H I C CNN
+F3 "" 0 200 50 H I C CNN
+DRAW
+C -80 0 20 0 1 0 N
+C 80 0 20 0 1 0 N
+P 2 0 1 0 0 50 0 120 N
+P 2 0 1 0 100 50 -100 50 N
+X 1 1 -200 0 100 R 50 50 0 1 P
+X 2 2 200 0 100 L 50 50 0 1 P
+ENDDRAW
+ENDDEF
+#
+# power_GND
+#
+DEF power_GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "power_GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# power_VCC
+#
+DEF power_VCC #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_VCC" 0 150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+C 0 75 25 0 1 0 N
+P 2 0 1 0 0 0 0 50 N
+X VCC 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+#End Library

pat80-computer/hardware/schematics/pat80/pat80.pro

@@ -0,0 +1,252 @@
+update=mer 24 mar 2021 21:27:02 CET
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+[schematic_editor]
+version=1
+PageLayoutDescrFile=
+PlotDirectoryName=
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=Pcbnew
+SpiceAjustPassiveValues=0
+LabSize=50
+ERC_TestSimilarLabels=1
+[pcbnew]
+version=1
+PageLayoutDescrFile=
+LastNetListRead=pat80.net
+CopperLayerCount=2
+BoardThickness=1.6
+AllowMicroVias=0
+AllowBlindVias=0
+RequireCourtyardDefinitions=0
+ProhibitOverlappingCourtyards=1
+MinTrackWidth=0.2
+MinViaDiameter=0.4
+MinViaDrill=0.3
+MinMicroViaDiameter=0.2
+MinMicroViaDrill=0.09999999999999999
+MinHoleToHole=0.25
+TrackWidth1=0.25
+TrackWidth2=0.25
+TrackWidth3=0.5
+ViaDiameter1=0.8
+ViaDrill1=0.4
+ViaDiameter2=1.5
+ViaDrill2=0.5
+dPairWidth1=0.2
+dPairGap1=0.25
+dPairViaGap1=0.25
+SilkLineWidth=0.12
+SilkTextSizeV=1
+SilkTextSizeH=1
+SilkTextSizeThickness=0.15
+SilkTextItalic=0
+SilkTextUpright=1
+CopperLineWidth=0.2
+CopperTextSizeV=1.5
+CopperTextSizeH=1.5
+CopperTextThickness=0.3
+CopperTextItalic=0
+CopperTextUpright=1
+EdgeCutLineWidth=0.05
+CourtyardLineWidth=0.05
+OthersLineWidth=0.15
+OthersTextSizeV=1
+OthersTextSizeH=1
+OthersTextSizeThickness=0.15
+OthersTextItalic=0
+OthersTextUpright=1
+SolderMaskClearance=0
+SolderMaskMinWidth=0
+SolderPasteClearance=0
+SolderPasteRatio=-0
+[pcbnew/Layer.F.Cu]
+Name=F.Cu
+Type=0
+Enabled=1
+[pcbnew/Layer.In1.Cu]
+Name=In1.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In2.Cu]
+Name=In2.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In3.Cu]
+Name=In3.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In4.Cu]
+Name=In4.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In5.Cu]
+Name=In5.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In6.Cu]
+Name=In6.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In7.Cu]
+Name=In7.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In8.Cu]
+Name=In8.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In9.Cu]
+Name=In9.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In10.Cu]
+Name=In10.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In11.Cu]
+Name=In11.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In12.Cu]
+Name=In12.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In13.Cu]
+Name=In13.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In14.Cu]
+Name=In14.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In15.Cu]
+Name=In15.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In16.Cu]
+Name=In16.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In17.Cu]
+Name=In17.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In18.Cu]
+Name=In18.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In19.Cu]
+Name=In19.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In20.Cu]
+Name=In20.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In21.Cu]
+Name=In21.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In22.Cu]
+Name=In22.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In23.Cu]
+Name=In23.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In24.Cu]
+Name=In24.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In25.Cu]
+Name=In25.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In26.Cu]
+Name=In26.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In27.Cu]
+Name=In27.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In28.Cu]
+Name=In28.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In29.Cu]
+Name=In29.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In30.Cu]
+Name=In30.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.B.Cu]
+Name=B.Cu
+Type=0
+Enabled=1
+[pcbnew/Layer.B.Adhes]
+Enabled=1
+[pcbnew/Layer.F.Adhes]
+Enabled=1
+[pcbnew/Layer.B.Paste]
+Enabled=1
+[pcbnew/Layer.F.Paste]
+Enabled=1
+[pcbnew/Layer.B.SilkS]
+Enabled=1
+[pcbnew/Layer.F.SilkS]
+Enabled=1
+[pcbnew/Layer.B.Mask]
+Enabled=1
+[pcbnew/Layer.F.Mask]
+Enabled=1
+[pcbnew/Layer.Dwgs.User]
+Enabled=1
+[pcbnew/Layer.Cmts.User]
+Enabled=1
+[pcbnew/Layer.Eco1.User]
+Enabled=1
+[pcbnew/Layer.Eco2.User]
+Enabled=1
+[pcbnew/Layer.Edge.Cuts]
+Enabled=1
+[pcbnew/Layer.Margin]
+Enabled=1
+[pcbnew/Layer.B.CrtYd]
+Enabled=1
+[pcbnew/Layer.F.CrtYd]
+Enabled=1
+[pcbnew/Layer.B.Fab]
+Enabled=1
+[pcbnew/Layer.F.Fab]
+Enabled=1
+[pcbnew/Layer.Rescue]
+Enabled=0
+[pcbnew/Netclasses]
+[pcbnew/Netclasses/Default]
+Name=Default
+Clearance=0.2
+TrackWidth=0.25
+ViaDiameter=0.8
+ViaDrill=0.4
+uViaDiameter=0.3
+uViaDrill=0.1
+dPairWidth=0.2
+dPairGap=0.25
+dPairViaGap=0.25

pat80-computer/hardware/schematics/pat80/sym-lib-table

@@ -0,0 +1,2 @@
+(sym_lib_table
+)

pat80-computer/software/z80-assembly/applications/brief/hello_world.asm

@@ -1,3 +1,5 @@
+; @language: Z80 ASM
+
 org 0xA000
 include '../../os/abi-generated.asm'
 

pat80-computer/software/z80-assembly/applications/tests/hd44780_lcd_test_procedure.asm

@@ -1,3 +1,4 @@
+; @language: Z80 ASM
 ;hd44780 lcd test procedure
 
 LCD_INSTR_REG: EQU %00000000

pat80-computer/software/z80-assembly/dev-headers/monitor.asm

@@ -1,2 +1,4 @@
+; @language: Z80 ASM
+
 org 0xA000  ; Set starting position to ram
 include '../os/main.asm'

pat80-computer/software/z80-assembly/os/Makefile

@@ -1,11 +1,17 @@
-os:
+build:
 	@echo "Building PAT80 rom..."
 	@z80asm -i main.asm -o rom.bin || (exit 1)
 	@echo "Generating label lookup table..."
 	@z80asm -i main.asm -o rom.bin -L 2>&1 | grep "Sys_" > abi-generated.asm
 	@echo "PAT80 Rom size:"
 	@du -h rom.bin
+
+write: build
 	@echo "Stretching rom to EEPROM size..."
 	@dd if=/dev/zero of=rom.bin bs=1 count=0 seek=8192
 	@echo "Writing to EEPROM..."
 	@minipro -w rom.bin -p "AT28C64B"
+
+run: build
+	@echo "Starting emulator..."
+	@../../../../pat80-emulator/z80-python-emulator/src/z80sbc.py -b rom.bin

pat80-computer/software/z80-assembly/os/abi-generated.asm

@@ -1,6 +1,6 @@
-Sys_ABI:	equ $0003
+Sys_ABI:	equ $0081
-Sys_Beep:	equ $0013
+Sys_Beep:	equ $0091
-Sys_Print:	equ $0007
+Sys_Print:	equ $0085
-Sys_Printc:	equ $000a
+Sys_Printc:	equ $0088
-Sys_Readc:	equ $000d
+Sys_Readc:	equ $008b
-Sys_Readline:	equ $0010
+Sys_Readline:	equ $008e

pat80-computer/software/z80-assembly/os/drivers/arduino_terminal.asm

@@ -1,5 +1,22 @@
 ; Arduino terminal driver
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
 
 ; config (IO port 0)
 TERM_DATA_REG: EQU IO_0

pat80-computer/software/z80-assembly/os/drivers/hd44780.asm

@@ -1,5 +1,23 @@
 ; HD44780 20x4 characters LCD display driver
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
 ;
 ; USAGE:
 ; STR: DB "Hello world!",0          <-- null terminated string

pat80-computer/software/z80-assembly/os/drivers/keyboard.asm

@@ -1,5 +1,24 @@
 ; Keyboard driver
+; Direct keyboard grid control (direct keys addressing, without keyboard controller)
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
 ;
 ; Requires declaration of following pointers, one for every column of the keys grid:
 ; KEYB_A0_REG

pat80-computer/software/z80-assembly/os/drivers/ps2_keyboard.asm

@@ -0,0 +1,91 @@
+; PS/2 Keyboard driver
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
+;
+; Based on PS/2 protocol as documented on http://www.lucadavidian.com/2017/11/15/interfacing-ps2-keyboard-to-a-microcontroller/
+;
+; The CLK and Data pin of the PS/2 keyboard are fed into two cascated serial-in parallel-out shift registers.
+; Their outputs are connected to the Pat80 data bus via a buffer activated by the selected
+; I/O EN signal and their RESET is connected to I/O Address line 0 of the keyboard I/O port.
+; Being RESET active low, they will be erased when the PAT80 reads (or writes) anything at address 0
+; of the keyboard I/0 port.
+;
+; Thus, the read cycle is:
+; - Read address 1 of the I/O port (the data bus will contain read keycode)
+; - Read address 0 of the I/O port (the shift registers will be reset)
+; The read keycode must be interpreted based on PS/2 Scan Codeset 2
+;
+; NOTE: The keyboard controller circuit throws away the MSB (uses only the lower 7 bits), because this allows
+; for using a single buffer chip instead of two (the freed up line is used by the PAT80 to reset the shift
+; registers). This means that the few keys with keycodes > 0x0F are not readable and that the break code is
+; seen by PAT80 not as 0xF0, but 0x70. This also means that the 0 of numeric keypad on extended keyboards will
+; behave strangely (will drop next pressed key). This is not a problem, as the computer, once completed, will
+; have a 60% keyboard, without any of the unusable keys.
+
+include 'drivers/ps2_keyboard_scancodeset2.asm'    ; PS/2 Scan Codeset 2 mappings
+
+; config (IO port 1)
+PS2KEYB_CLEAR_REG: EQU IO_2
+PS2KEYB_DATA_REG: EQU IO_2 + 1
+
+PS2KEYB_TRANSMISSION_DURATION: EQU 86 ;@ 100khz    ; The time needed for the keyboard to transmit all the 11 bits of data, in CPU clock cycles
+
+PS2KEYB_BREAK: EQU 0xF0 - %10000000    ; The MSB is dropped: see NOTE on intro above
+
+; Reads a single character and returns an ascii code when a valid key is pressed. Blocking.
+; @return A The read character
+PS2Keyb_readc:
+    in a, (PS2KEYB_DATA_REG)    ; reads a character
+    add a, 0
+    jp z, PS2Keyb_readc     ; if char is 0 (NULL), user didn't press any key: wait for character
+	; we found something, but it may still be shifting in bits. Allow the keyboard to complete data transmission
+	ld a, PS2KEYB_TRANSMISSION_DURATION/5    ; every cycle is 5 CPU cycles
+	ps2keyb_readc_waitloop:
+		sub 1
+		jr nz, ps2keyb_readc_waitloop
+	; data transmission should now be complete.
+	; check if code is a Break Code. If it is, discard next key as it is a released key
+	in a, (PS2KEYB_DATA_REG)    ; re-reads the character (it should now be complete)
+	ld c, a    ; save a, because it will be modified by next compare
+	cp PS2KEYB_BREAK    ; compare a with Break Code
+	jp z, ps2keyb_readc_discard    ; if it is a Break Code, jump to discarder routine
+	; we read a valid character: clean key registers
+	in a, (PS2KEYB_CLEAR_REG)
+	; now we will convert keycode in c to ASCII code
+	ld hl, PS2KEYB_SCANCODESET_ASCII_MAP    ; load start of codeset to ascii map
+	ld b, 0    ; reset b, as we are going to do a sum with bc (where c contains the read scancode)
+	add hl, bc    ; add scancode value to map start addr (we are using it as offset)
+	ld a, (hl)    ; load the corresponding ascii code in a for return
+    ret ; returns in the a register
+	ps2keyb_readc_discard:
+		; clean key registers
+		in a, (PS2KEYB_CLEAR_REG)
+		ps2keyb_readc_discard_waitfordata:
+			; wait for next non-0 keycode and discards it (it is the code of the released key)
+			in a, (PS2KEYB_DATA_REG)    ; reads a character
+			add a, 0
+			jp z, ps2keyb_readc_discard_waitfordata     ; if char is 0 (NULL), wait
+			; we found something, allow the keyboard to complete data transmission
+			ld a, PS2KEYB_TRANSMISSION_DURATION/5    ; every cycle is 5 CPU cycles
+			ps2keyb_readc_discard_waitloop:
+				sub 1
+				jr nz, ps2keyb_readc_discard_waitloop
+			; data transmission should now be complete, throw away key code
+			in a, (PS2KEYB_CLEAR_REG)
+	jp PS2Keyb_readc    ; go back and wait for another keycode

pat80-computer/software/z80-assembly/os/drivers/ps2_keyboard_scancodeset2.asm

@@ -0,0 +1,137 @@
+; PS/2 Keycode Mode 2 to ASCII mapping table
+; @language: Z80 ASM
+;
+; Keycodes 0 to 83
+
+PS2KEYB_SCANCODESET_ASCII_MAP: DB 	35
+DB	33	;	F9
+DB	33	;	
+DB	33	;	F5
+DB	33	;	F3
+DB	33	;	F1
+DB	33	;	F2
+DB	33	;	F12
+DB	33	;	
+DB	33	;	F10
+DB	33	;	F8
+DB	33	;	F6
+DB	33	;	F4
+DB	9	;	TAB
+DB	96	;	`
+DB	33	;	
+DB	33	;	
+DB	33	;	L ALT
+DB	33	;	L SHFT
+DB	33	;	
+DB	33	;	L CTRL
+DB	81	;	Q
+DB	49	;	1
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	90	;	Z
+DB	83	;	S
+DB	65	;	A
+DB	87	;	W
+DB	50	;	2
+DB	33	;	
+DB	33	;	
+DB	67	;	C
+DB	88	;	X
+DB	68	;	D
+DB	69	;	E
+DB	52	;	4
+DB	51	;	3
+DB	33	;	
+DB	33	;	
+DB	32	;	SPACE
+DB	86	;	V
+DB	70	;	F
+DB	84	;	T
+DB	82	;	R
+DB	53	;	5
+DB	33	;	
+DB	33	;	
+DB	78	;	N
+DB	66	;	B
+DB	72	;	H
+DB	71	;	G
+DB	89	;	Y
+DB	54	;	6
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	77	;	M
+DB	74	;	J
+DB	85	;	U
+DB	55	;	7
+DB	56	;	8
+DB	33	;	
+DB	33	;	
+DB	44	;	,
+DB	75	;	K
+DB	73	;	I
+DB	79	;	O
+DB	48	;	0
+DB	57	;	9
+DB	33	;	
+DB	33	;	
+DB	46	;	.
+DB	47	;	/
+DB	76	;	L
+DB	59	;	;
+DB	80	;	P
+DB	45	;	-
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	39	;	'
+DB	33	;	
+DB	91	;	[
+DB	61	;	=
+DB	33	;	
+DB	33	;	
+DB	33	;	CAPS
+DB	33	;	R SHFT
+DB	10	;	ENTER
+DB	93	;	]
+DB	33	;	
+DB	92	;	\
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	8	;	BKSP
+DB	33	;	
+DB	33	;	
+DB	49	;	KP 1
+DB	33	;	
+DB	52	;	KP 4
+DB	55	;	KP 7
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	48	;	KP 0
+DB	46	;	KP .
+DB	50	;	KP 2
+DB	53	;	KP 5
+DB	54	;	KP 6
+DB	56	;	KP 8
+DB	33	;	ESC
+DB	33	;	NUM
+DB	33	;	F11
+DB	43	;	KP +
+DB	51	;	KP 3
+DB	45	;	KP -
+DB	42	;	KP *
+DB	57	;	KP 9
+DB	33	;	SCROLL
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	
+DB	33	;	F7

pat80-computer/software/z80-assembly/os/drivers/sn76489.asm

@@ -1,5 +1,23 @@
-; TI SN76489 sound chip display driver
+; TI SN76489 sound chip driver
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
 ;
 ; USAGE:
 ; call Snd_init                     <-- inits sound (and silences default tone)

pat80-computer/software/z80-assembly/os/drivers/vgax.asm

@@ -1,5 +1,23 @@
 ; Vgax display driver
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
 ;
 ; Requires declaration of following pointers:
 ; VGAX_INSTR_REG

pat80-computer/software/z80-assembly/os/libs/strings.asm

@@ -1,5 +1,22 @@
 ; Strings manipulation library
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
 
 ; Transforms case to upper
 

pat80-computer/software/z80-assembly/os/libs/time.asm

@@ -1,5 +1,22 @@
 ; Time library
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
 
 
 ; Duration in cpu cycles / 55 (change these values based on CPU frequency)

pat80-computer/software/z80-assembly/os/main-dev.asm

@@ -1,2 +1,4 @@
+; @language: Z80 ASM
+
 org 0xA000  ; Set starting position to ram
 include 'main.asm'

pat80-computer/software/z80-assembly/os/main.asm

@@ -2,6 +2,24 @@ jp Sysinit     ; Startup vector: DO NOT MOVE! Must be the first instruction
 
 ; Pat80 BIOS v0.01
 ; @author: Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
 ;
 ; MEMORY MAP
 ;   ROM is at 0x0000
@@ -10,18 +28,30 @@ jp Sysinit     ; Startup vector: DO NOT MOVE! Must be the first instruction
 ;       DRIVERS VAR SPACE: 0x9000 - 0x9FFF (4kb)
 ;       APPLICATION VAR SPACE: 0xA000 - 0xFFFF (24kb)
 ; I/O MAP
-;   I/O 0 (0x00 - 0x1F) Parallel terminal (uses addr 0x00 only)
+;   I/O 0 (0x00 - 0x1F) Parallel terminal (uses addr 0x00 and 0x01)
 ;   I/O 1 (0x20 - 0x3F) Sound card (uses addr 0x20 only)
-;   I/O 2 (0x40 - 0x5F)
+;   I/O 2 (0x40 - 0x5F) PS2 Keyboard (uses 0x40 and 0x41)
 ;   I/O 3 (0x60 - 0x7F)
 ;   I/O 4 (0x80 - 0x9F)
 ;   I/O 5 (0xA0 - 0xBF)
 ;   I/O 6 (0xC0 - 0xDF)
 ;   I/O 7 (0xE0 - 0xFF)
 
+; **** RESET/INTERRUPT VECTOR ****
+
+; Maskable interrupt mode 1: when the BREAK key is pressed, 
+; a maskable interrupt is generated and the CPU jumps to this address.
+; In this way, BREAK key brings up memory monitor at any time.
+ds 0x38
+	di ; Disable maskable interrupts.
+	exx ; exchange registers
+	ex af, af'
+	jp Monitor_main
+
 ; **** SYSTEM CALLS ****
 ; System calls provide access to low level functions (input from keyboard, output to screen etc).
 ; The name starts always with Sys_
+ds 0x40	; Place system calls after Z80 reset/interrupt subroutines space
 
 ; Returns ABI version.
 ; (ABI -> https://en.wikipedia.org/wiki/Application_binary_interface)
@@ -45,6 +75,7 @@ Sys_Printc:
 ; @return A The read character
 Sys_Readc:
     jp Term_readc
+    ;jp PS2Keyb_readc
 
 ; Reads a line
 ; @return BC The pointer to a null-terminated read string
@@ -61,6 +92,7 @@ Sys_Beep:
 SYS_VAR_SPACE: EQU 0x8000
 DRV_VAR_SPACE: EQU 0x9000
 APP_SPACE: EQU 0xA000
+MEM_END: EQU 0xFFFF
 
 ; SYSTEM CONFIGURATION
 IO_0: EQU 0x00
@@ -79,6 +111,7 @@ IO_7: EQU 0xE0
 
 ;include 'drivers/hd44780.asm'
 ;include 'drivers/keyboard.asm'
+include 'drivers/ps2_keyboard.asm'
 include 'drivers/arduino_terminal.asm'
 include 'drivers/sn76489.asm'
 include 'monitor.asm'
@@ -101,13 +134,28 @@ Sysinit:
     ; Play startup sound
     call Sys_Beep
 
-    ; Run memory monitor
+	; Run memory monitor
-    call Monitor_main
+	ei ; enable maskabpe interrupts
+	im 1 ; set interrupt mode 1 (on interrupt jumps to 0x38)
+	rst 0x38 ; throw fake interrupt: jump to interrupt routine to start monitor
+
+    ; Keyboard test
+    ; ld a, 0x3E
+    ; call Sys_Printc
+    ; ktestloop:
+    ;     call Sys_Readc
+    ;     call Sys_Printc
+    ;     ld a, 46
+    ;     call Sys_Printc
+    ;     jp ktestloop
+
+	; User exited from memory monitor without loading a program. Do nothing.
+	mloop:
+		; Main loop: do nothing.
+		jp mloop
 
     ; DEBUG: Echo chars
     ; loop:
     ;     call Term_readc
     ;     call Term_printc
     ;     jp loop
-
-    halt

pat80-computer/software/z80-assembly/os/monitor.asm

@@ -1,5 +1,23 @@
 ; Pat80 Memory Monitor
 ; @author Daniele Verducci
+; @language: Z80 ASM
+;
+;
+; This file is part of Pat80 Memory Monitor.
+;
+; Pat80 Memory Monitor is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 Memory Monitor is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 Memory Monitor.  If not, see <http://www.gnu.org/licenses/>.
+;
 ;
 ; Monitor commands (CMD $arg):
 ;   H (HELP) Shows available commands
@@ -21,11 +39,14 @@ MON_COMMAND_ZERO: DB "ZERO",0
 MON_COMMAND_LOAD: DB "LOAD",0
 MON_COMMAND_RUN: DB "RUN",0
 MON_COMMAND_ADB: DB "ADB",0
+MON_COMMAND_MEMTEST: DB "MEMTEST",0
+MON_COMMAND_QUIT: DB "QUIT",0
 MON_ARG_HEX: DB "    0x",0
-MON_HELP: DB 10,"Available commands:\nHELP prints this message\nDUMP [ADDR] shows memory content\nSET [ADDR] sets memory content\nZERO [ADDR] [ADDR] sets all bytes to 0 in the specified range\nLOAD\nRUN [ADDR] executes code starting from ADDR\nADB starts Assembly Deploy Bridge",0
+MON_HELP: DB 10,"Available commands:\nHELP prints this message\nDUMP [ADDR] shows memory content\nSET [ADDR] sets memory content\nZERO [ADDR] [ADDR] sets all bytes to 0 in the specified range\nLOAD\nRUN [ADDR] executes code starting from ADDR\nADB starts Assembly Deploy Bridge\nMEMTEST checks ram boundaries\nQUIT exits",0
 MON_MSG_ADB: DB 10,"Waiting for data.",0
 MON_ERR_SYNTAX: DB "    Syntax error",0
-;MON_ADB_TIMEOUT: EQU 0xFF     // Number of cycles after an ADB binary transfer is considered completed
+; MON_RAMTEST_INTRO: DB " Checking memory... ",0
+; MON_RAMTEST_RAMSTART: DB " Ram starts at 0x",0
 MON_DUMP_BYTES_LINES: EQU 8
 MON_DUMP_BYTES_PER_LINE: EQU 8
 
@@ -66,6 +87,12 @@ Monitor_main:
         ld hl, MON_COMMAND_ADB
         cp (hl)
         jp z, monitor_adb
+        ; ld hl, MON_COMMAND_MEMTEST
+        ; cp (hl)
+        ; jp z, monitor_memtest
+        ld hl, MON_COMMAND_QUIT
+		cp (hl)
+		jp z, monitor_quit
         ; Unrecognized command: print error and beep
         ld bc, MON_ERR_SYNTAX
         call Sys_Print
@@ -80,6 +107,23 @@ monitor_help:
     call Sys_Print
     jp monitor_main_loop
 
+monitor_quit:
+    ld bc, MON_COMMAND_QUIT + 1 ; autocomplete command
+    call Sys_Print
+	; newline
+	ld a, 10
+	call Sys_Printc
+    ; Restores registers and re-enable interrupts: when the BREAK key is pressed, 
+	; a maskable interrupt is generated and the CPU jumps to 0x38 reset vector, 
+	; where if finds a call to Memory monitor (see main.asm).
+	exx ; exchange registers
+	ex af, af'
+	; enable interrupts
+	ei
+	im 1 ; set interrupt mode 1 (on interrupt jumps to 0x38)
+	reti ; return from interrupt
+
+
 ; Asks the user for a memory position and shows the following 64 bytes of memory
 ; @uses a, b, c, d, e, h, l
 monitor_dump:
@@ -257,23 +301,34 @@ monitor_zero: ; TODO: bugged, doesn't exit cycle
 monitor_load:
     ld bc, MON_COMMAND_LOAD + 1 ; autocomplete command
     call Sys_Print
+	; TODO: When implemented, re-enable interrupts before run application
     jp monitor_main_loop
 
 monitor_run:
     ld bc, MON_COMMAND_RUN + 1 ; autocomplete command
     call Sys_Print
-    ; Now read the memory address to be changed from the user
+    ; Now read the memory address to be executed from the user
     call monitor_arg_2byte  ; returns the read bytes in hl
     ld a, 10 ; newline
     call Sys_Printc	
-    jp (hl)    ; Start executing code
+	; enable interrupts
+	ei
+	im 1 ; set interrupt mode 1 (on interrupt jumps to 0x38)
+	; pop the last entry on the stack: this is needed (as the monitor
+	; runs in an interrupt) to counter-balance the missing reti statement
+	pop bc
+	; execute code
+	jp (hl)
 
 monitor_adb:
     ld bc, MON_COMMAND_ADB + 1 ; autocomplete command
     call Sys_Print
     ; start copying incoming data to application space
     call monitor_copyTermToAppMem
+	; call monitor_enable_int    ; re-enable interrupts
     ;jp APP_SPACE    ; Start executing code
+
+
     ; ld bc, APP_SPACE
     ; call Sys_Print
     jp monitor_main_loop
@@ -516,4 +571,55 @@ monitor_copyTermToAppMem:
         dec d
         jp monitor_copyTermToAppMem_loop   ; continue loop
 
+; Runs a memory test to identify ram memory boundaries and check the ram is working.
+; Starting from last memory position, writes 0xFF, reads it back, writes 0x00, reads it back.
+; Exits when the first value differs from the written value (this may be caused by a bad ram
+; block or the start of rom in memory map). Prints the last good address on exit.
+; monitor_memtest:
+;  ld bc, MON_COMMAND_MEMTEST + 1 ; autocomplete command
+;  call Sys_Print
+; 	; Prints intro
+;  ld bc, MON_RAMTEST_INTRO
+;  call Sys_Print
+; 	; Starts checking
+; 	ld hl, MEM_END
+; 	monitor_memtest_loop:
+; 		; Save current byte value for later restore
+;      ld c, (hl)
+;      ; Write 0xFF
+; 		ld a, 0xFF
+; 		ld (hl), a
+; 		; Read and compare 0xFF
+; 		ld a, (hl)
+; 		cp 0xFF
+; 		jp nz, monitor_memtest_badram
+; 		; Write 0x00
+; 		ld a, 0x00
+; 		ld (hl), a
+; 		; Read and compare 0xFF
+; 		ld a, (hl)
+; 		cp 0x00
+; 		jp nz, monitor_memtest_badram
+; 		; Memory byte is good, restore previous value
+;      ld (hl), c
+;      ; Next one
+; 		dec hl
+; 		jp monitor_memtest_loop
+; 	monitor_memtest_badram:
+; 		; Found a bad memory byte (or entered rom block).
+; 		ld bc, MON_RAMTEST_RAMSTART
+; 		call Sys_Print
+; 		; Print last valid memory addr
+;      inc hl
+;      ld a, h
+;      call monitor_printHexByte
+;      ld a, l
+;      call monitor_printHexByte
+;      ; Newline
+;      ld a, 10
+;      call Sys_Printc
+;      ; Back to menu
+; 		jp monitor_main_loop
+
+
 

pat80-computer/software/z80-assembly/os/tests/sndtest.asm

@@ -1,3 +1,5 @@
+; @language: Z80 ASM
+
 SndTest_test:
     ; ch1 max volume
     ld a,%10010000

pat80-emulator/README.md

@@ -0,0 +1,7 @@
+# PAT80 Emulator
+This folder contains a submodule (you should fetch it if you need to run the os in an emulator).
+
+Uses cburbridge's Z80 emulator written in python. It opens some windows showing the emulated computer's memory map, the cpu registers state and parallel terminal to interact with the os.
+
+## Usage
+To run the os in the emulator, head to `pat80-computer/software/z80-assembly/os/Makefile` and run `make run` to build the rom from assembly and start the emulator.

pat80-emulator/z80-python-emulator

@@ -0,0 +1 @@
+Subproject commit a5dbd3e829a94a2598b42ba976e61353c580600b

pat80-io-devices/composite-pal-adapter/software/avr-assembly/.gitignore

@@ -0,0 +1,2 @@
+main.hex
+main.obj

pat80-io-devices/composite-pal-adapter/software/avr-assembly/README.md

@@ -5,9 +5,14 @@
 ## Flash
 ### Rom
 `minipro -w filename.hex -p ATMEGA1284`
-
 ### Fuses
 Read fuses: `minipro -r -c config -p ATMEGA1284` (`-r -c config` means read configuration (fuses))
 Fuses must be written all together, so read the current values, edit the generated file and write it.
 The meaning of every bis is in the conf file.
 Write fuses: `minipro -w fuses.conf -c config -p ATMEGA1284`
+
+# Generate test images
+Using GIMP, Image -> Mode -> Indexed, select 2 colors and Posterize.
+Invert the image colors.
+Save as .xbm file. Oper with a *text editor*, you will find an array of byte-packed pixels (every byte represents 8 pixels).
+Copy and paste on an ASM file.

pat80-io-devices/composite-pal-adapter/software/avr-assembly/atmega1284definition.asm

@@ -1,276 +0,0 @@
-; ***** I/O REGISTER DEFINITIONS *****************************************
-; NOTE:
-; Definitions marked "MEMORY MAPPED"are extended I/O ports
-; and cannot be used with IN/OUT instructions
-.equ	UDR1	= 0xce	; MEMORY MAPPED
-.equ	UBRR1L	= 0xcc	; MEMORY MAPPED
-.equ	UBRR1H	= 0xcd	; MEMORY MAPPED
-.equ	UCSR1C	= 0xca	; MEMORY MAPPED
-.equ	UCSR1B	= 0xc9	; MEMORY MAPPED
-.equ	UCSR1A	= 0xc8	; MEMORY MAPPED
-.equ	UDR0	= 0xc6	; MEMORY MAPPED
-.equ	UBRR0L	= 0xc4	; MEMORY MAPPED
-.equ	UBRR0H	= 0xc5	; MEMORY MAPPED
-.equ	UCSR0C	= 0xc2	; MEMORY MAPPED
-.equ	UCSR0B	= 0xc1	; MEMORY MAPPED
-.equ	UCSR0A	= 0xc0	; MEMORY MAPPED
-.equ	TWAMR	= 0xbd	; MEMORY MAPPED
-.equ	TWCR	= 0xbc	; MEMORY MAPPED
-.equ	TWDR	= 0xbb	; MEMORY MAPPED
-.equ	TWAR	= 0xba	; MEMORY MAPPED
-.equ	TWSR	= 0xb9	; MEMORY MAPPED
-.equ	TWBR	= 0xb8	; MEMORY MAPPED
-.equ	ASSR	= 0xb6	; MEMORY MAPPED
-.equ	OCR2B	= 0xb4	; MEMORY MAPPED
-.equ	OCR2A	= 0xb3	; MEMORY MAPPED
-.equ	TCNT2	= 0xb2	; MEMORY MAPPED
-.equ	TCCR2B	= 0xb1	; MEMORY MAPPED
-.equ	TCCR2A	= 0xb0	; MEMORY MAPPED
-.equ	OCR3BL	= 0x9a	; MEMORY MAPPED
-.equ	OCR3BH	= 0x9b	; MEMORY MAPPED
-.equ	OCR3AL	= 0x98	; MEMORY MAPPED
-.equ	OCR3AH	= 0x99	; MEMORY MAPPED
-.equ	ICR3L	= 0x96	; MEMORY MAPPED
-.equ	ICR3H	= 0x97	; MEMORY MAPPED
-.equ	TCNT3L	= 0x94	; MEMORY MAPPED
-.equ	TCNT3H	= 0x95	; MEMORY MAPPED
-.equ	TCCR3C	= 0x92	; MEMORY MAPPED
-.equ	TCCR3B	= 0x91	; MEMORY MAPPED
-.equ	TCCR3A	= 0x90	; MEMORY MAPPED
-.equ	OCR1BL	= 0x8a	; MEMORY MAPPED
-.equ	OCR1BH	= 0x8b	; MEMORY MAPPED
-.equ	OCR1AL	= 0x88	; MEMORY MAPPED
-.equ	OCR1AH	= 0x89	; MEMORY MAPPED
-.equ	ICR1L	= 0x86	; MEMORY MAPPED
-.equ	ICR1H	= 0x87	; MEMORY MAPPED
-.equ	TCNT1L	= 0x84	; MEMORY MAPPED
-.equ	TCNT1H	= 0x85	; MEMORY MAPPED
-.equ	TCCR1C	= 0x82	; MEMORY MAPPED
-.equ	TCCR1B	= 0x81	; MEMORY MAPPED
-.equ	TCCR1A	= 0x80	; MEMORY MAPPED
-.equ	DIDR1	= 0x7f	; MEMORY MAPPED
-.equ	DIDR0	= 0x7e	; MEMORY MAPPED
-.equ	ADMUX	= 0x7c	; MEMORY MAPPED
-.equ	ADCSRB	= 0x7b	; MEMORY MAPPED
-.equ	ADCSRA	= 0x7a	; MEMORY MAPPED
-.equ	ADCH	= 0x79	; MEMORY MAPPED
-.equ	ADCL	= 0x78	; MEMORY MAPPED
-.equ	PCMSK3	= 0x73	; MEMORY MAPPED
-.equ	TIMSK3	= 0x71	; MEMORY MAPPED
-.equ	TIMSK2	= 0x70	; MEMORY MAPPED
-.equ	TIMSK1	= 0x6f	; MEMORY MAPPED
-.equ	TIMSK0	= 0x6e	; MEMORY MAPPED
-.equ	PCMSK2	= 0x6d	; MEMORY MAPPED
-.equ	PCMSK1	= 0x6c	; MEMORY MAPPED
-.equ	PCMSK0	= 0x6b	; MEMORY MAPPED
-.equ	EICRA	= 0x69	; MEMORY MAPPED
-.equ	PCICR	= 0x68	; MEMORY MAPPED
-.equ	OSCCAL	= 0x66	; MEMORY MAPPED
-.equ	PRR1	= 0x65	; MEMORY MAPPED
-.equ	PRR0	= 0x64	; MEMORY MAPPED
-.equ	CLKPR	= 0x61	; MEMORY MAPPED
-.equ	WDTCSR	= 0x60	; MEMORY MAPPED
-.equ	SREG	= 0x3f
-.equ	SPL	= 0x3d
-.equ	SPH	= 0x3e
-.equ	RAMPZ	= 0x3b
-.equ	SPMCSR	= 0x37
-.equ	MCUCR	= 0x35
-.equ	MCUSR	= 0x34
-.equ	SMCR	= 0x33
-.equ	OCDR	= 0x31
-.equ	ACSR	= 0x30
-.equ	SPDR	= 0x2e
-.equ	SPSR	= 0x2d
-.equ	SPCR	= 0x2c
-.equ	GPIOR2	= 0x2b
-.equ	GPIOR1	= 0x2a
-.equ	OCR0B	= 0x28
-.equ	OCR0A	= 0x27
-.equ	TCNT0	= 0x26
-.equ	TCCR0B	= 0x25
-.equ	TCCR0A	= 0x24
-.equ	GTCCR	= 0x23
-.equ	EEARH	= 0x22
-.equ	EEARL	= 0x21
-.equ	EEDR	= 0x20
-.equ	EECR	= 0x1f
-.equ	GPIOR0	= 0x1e
-.equ	EIMSK	= 0x1d
-.equ	EIFR	= 0x1c
-.equ	PCIFR	= 0x1b
-.equ	TIFR3	= 0x18
-.equ	TIFR2	= 0x17
-.equ	TIFR1	= 0x16
-.equ	TIFR0	= 0x15
-.equ	PORTD	= 0x0b
-.equ	DDRD	= 0x0a
-.equ	PIND	= 0x09
-.equ	PORTC	= 0x08
-.equ	DDRC	= 0x07
-.equ	PINC	= 0x06
-.equ	PORTB	= 0x05
-.equ	DDRB	= 0x04
-.equ	PINB	= 0x03
-.equ	PORTA	= 0x02
-.equ	DDRA	= 0x01
-.equ	PINA	= 0x00
-
-; ***** PORTA ************************
-; PORTA - Port A Data Register
-.equ	PORTA0	= 0	; Port A Data Register bit 0
-.equ	PA0	= 0	; For compatibility
-.equ	PORTA1	= 1	; Port A Data Register bit 1
-.equ	PA1	= 1	; For compatibility
-.equ	PORTA2	= 2	; Port A Data Register bit 2
-.equ	PA2	= 2	; For compatibility
-.equ	PORTA3	= 3	; Port A Data Register bit 3
-.equ	PA3	= 3	; For compatibility
-.equ	PORTA4	= 4	; Port A Data Register bit 4
-.equ	PA4	= 4	; For compatibility
-.equ	PORTA5	= 5	; Port A Data Register bit 5
-.equ	PA5	= 5	; For compatibility
-.equ	PORTA6	= 6	; Port A Data Register bit 6
-.equ	PA6	= 6	; For compatibility
-.equ	PORTA7	= 7	; Port A Data Register bit 7
-.equ	PA7	= 7	; For compatibility
-
-; DDRA - Port A Data Direction Register
-.equ	DDA0	= 0	; Data Direction Register, Port A, bit 0
-.equ	DDA1	= 1	; Data Direction Register, Port A, bit 1
-.equ	DDA2	= 2	; Data Direction Register, Port A, bit 2
-.equ	DDA3	= 3	; Data Direction Register, Port A, bit 3
-.equ	DDA4	= 4	; Data Direction Register, Port A, bit 4
-.equ	DDA5	= 5	; Data Direction Register, Port A, bit 5
-.equ	DDA6	= 6	; Data Direction Register, Port A, bit 6
-.equ	DDA7	= 7	; Data Direction Register, Port A, bit 7
-
-; PINA - Port A Input Pins
-.equ	PINA0	= 0	; Input Pins, Port A bit 0
-.equ	PINA1	= 1	; Input Pins, Port A bit 1
-.equ	PINA2	= 2	; Input Pins, Port A bit 2
-.equ	PINA3	= 3	; Input Pins, Port A bit 3
-.equ	PINA4	= 4	; Input Pins, Port A bit 4
-.equ	PINA5	= 5	; Input Pins, Port A bit 5
-.equ	PINA6	= 6	; Input Pins, Port A bit 6
-.equ	PINA7	= 7	; Input Pins, Port A bit 7
-
-
-; ***** PORTB ************************
-; PORTB - Port B Data Register
-.equ	PORTB0	= 0	; Port B Data Register bit 0
-.equ	PB0	= 0	; For compatibility
-.equ	PORTB1	= 1	; Port B Data Register bit 1
-.equ	PB1	= 1	; For compatibility
-.equ	PORTB2	= 2	; Port B Data Register bit 2
-.equ	PB2	= 2	; For compatibility
-.equ	PORTB3	= 3	; Port B Data Register bit 3
-.equ	PB3	= 3	; For compatibility
-.equ	PORTB4	= 4	; Port B Data Register bit 4
-.equ	PB4	= 4	; For compatibility
-.equ	PORTB5	= 5	; Port B Data Register bit 5
-.equ	PB5	= 5	; For compatibility
-.equ	PORTB6	= 6	; Port B Data Register bit 6
-.equ	PB6	= 6	; For compatibility
-.equ	PORTB7	= 7	; Port B Data Register bit 7
-.equ	PB7	= 7	; For compatibility
-
-; DDRB - Port B Data Direction Register
-.equ	DDB0	= 0	; Port B Data Direction Register bit 0
-.equ	DDB1	= 1	; Port B Data Direction Register bit 1
-.equ	DDB2	= 2	; Port B Data Direction Register bit 2
-.equ	DDB3	= 3	; Port B Data Direction Register bit 3
-.equ	DDB4	= 4	; Port B Data Direction Register bit 4
-.equ	DDB5	= 5	; Port B Data Direction Register bit 5
-.equ	DDB6	= 6	; Port B Data Direction Register bit 6
-.equ	DDB7	= 7	; Port B Data Direction Register bit 7
-
-; PINB - Port B Input Pins
-.equ	PINB0	= 0	; Port B Input Pins bit 0
-.equ	PINB1	= 1	; Port B Input Pins bit 1
-.equ	PINB2	= 2	; Port B Input Pins bit 2
-.equ	PINB3	= 3	; Port B Input Pins bit 3
-.equ	PINB4	= 4	; Port B Input Pins bit 4
-.equ	PINB5	= 5	; Port B Input Pins bit 5
-.equ	PINB6	= 6	; Port B Input Pins bit 6
-.equ	PINB7	= 7	; Port B Input Pins bit 7
-
-
-; ***** PORTC ************************
-; PORTC - Port C Data Register
-.equ	PORTC0	= 0	; Port C Data Register bit 0
-.equ	PC0	= 0	; For compatibility
-.equ	PORTC1	= 1	; Port C Data Register bit 1
-.equ	PC1	= 1	; For compatibility
-.equ	PORTC2	= 2	; Port C Data Register bit 2
-.equ	PC2	= 2	; For compatibility
-.equ	PORTC3	= 3	; Port C Data Register bit 3
-.equ	PC3	= 3	; For compatibility
-.equ	PORTC4	= 4	; Port C Data Register bit 4
-.equ	PC4	= 4	; For compatibility
-.equ	PORTC5	= 5	; Port C Data Register bit 5
-.equ	PC5	= 5	; For compatibility
-.equ	PORTC6	= 6	; Port C Data Register bit 6
-.equ	PC6	= 6	; For compatibility
-.equ	PORTC7	= 7	; Port C Data Register bit 7
-.equ	PC7	= 7	; For compatibility
-
-; DDRC - Port C Data Direction Register
-.equ	DDC0	= 0	; Port C Data Direction Register bit 0
-.equ	DDC1	= 1	; Port C Data Direction Register bit 1
-.equ	DDC2	= 2	; Port C Data Direction Register bit 2
-.equ	DDC3	= 3	; Port C Data Direction Register bit 3
-.equ	DDC4	= 4	; Port C Data Direction Register bit 4
-.equ	DDC5	= 5	; Port C Data Direction Register bit 5
-.equ	DDC6	= 6	; Port C Data Direction Register bit 6
-.equ	DDC7	= 7	; Port C Data Direction Register bit 7
-
-; PINC - Port C Input Pins
-.equ	PINC0	= 0	; Port C Input Pins bit 0
-.equ	PINC1	= 1	; Port C Input Pins bit 1
-.equ	PINC2	= 2	; Port C Input Pins bit 2
-.equ	PINC3	= 3	; Port C Input Pins bit 3
-.equ	PINC4	= 4	; Port C Input Pins bit 4
-.equ	PINC5	= 5	; Port C Input Pins bit 5
-.equ	PINC6	= 6	; Port C Input Pins bit 6
-.equ	PINC7	= 7	; Port C Input Pins bit 7
-
-
-; ***** PORTD ************************
-; PORTD - Port D Data Register
-.equ	PORTD0	= 0	; Port D Data Register bit 0
-.equ	PD0	= 0	; For compatibility
-.equ	PORTD1	= 1	; Port D Data Register bit 1
-.equ	PD1	= 1	; For compatibility
-.equ	PORTD2	= 2	; Port D Data Register bit 2
-.equ	PD2	= 2	; For compatibility
-.equ	PORTD3	= 3	; Port D Data Register bit 3
-.equ	PD3	= 3	; For compatibility
-.equ	PORTD4	= 4	; Port D Data Register bit 4
-.equ	PD4	= 4	; For compatibility
-.equ	PORTD5	= 5	; Port D Data Register bit 5
-.equ	PD5	= 5	; For compatibility
-.equ	PORTD6	= 6	; Port D Data Register bit 6
-.equ	PD6	= 6	; For compatibility
-.equ	PORTD7	= 7	; Port D Data Register bit 7
-.equ	PD7	= 7	; For compatibility
-
-; DDRD - Port D Data Direction Register
-.equ	DDD0	= 0	; Port D Data Direction Register bit 0
-.equ	DDD1	= 1	; Port D Data Direction Register bit 1
-.equ	DDD2	= 2	; Port D Data Direction Register bit 2
-.equ	DDD3	= 3	; Port D Data Direction Register bit 3
-.equ	DDD4	= 4	; Port D Data Direction Register bit 4
-.equ	DDD5	= 5	; Port D Data Direction Register bit 5
-.equ	DDD6	= 6	; Port D Data Direction Register bit 6
-.equ	DDD7	= 7	; Port D Data Direction Register bit 7
-
-; PIND - Port D Input Pins
-.equ	PIND0	= 0	; Port D Input Pins bit 0
-.equ	PIND1	= 1	; Port D Input Pins bit 1
-.equ	PIND2	= 2	; Port D Input Pins bit 2
-.equ	PIND3	= 3	; Port D Input Pins bit 3
-.equ	PIND4	= 4	; Port D Input Pins bit 4
-.equ	PIND5	= 5	; Port D Input Pins bit 5
-.equ	PIND6	= 6	; Port D Input Pins bit 6
-.equ	PIND7	= 7	; Port D Input Pins bit 7

pat80-io-devices/composite-pal-adapter/software/avr-assembly/character_generator.asm

@@ -0,0 +1,179 @@
+; *******************************************
+; *    PAT80 COMPOSITE PAL VIDEO ADAPTER    *
+; *      Character generator module         *
+; *******************************************
+;
+; @language: AVR ASM
+;
+; This file is part of Pat80 IO Devices.
+;
+; Pat80 IO Devices is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 IO Devices is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 IO Devices.  If not, see <http://www.gnu.org/licenses/>.
+;
+;
+; This module generates the character pixels using the font present in rom
+; and adds it on the framebuffer in the position indicated by POS_COARSE (Y).
+
+.equ LINE_COLUMNS = 46	; number of columns (characters or chunks) per line
+
+; Draws character in register A to the screen at current coords (Y)
+; @param (HIGH_ACCUM) ascii code to display
+; @modifies r0 (A), r1, r2, r3, r17, HIGH_ACCUM, Y, Z
+draw_char:
+	; Check char is valid
+	cpi HIGH_ACCUM, 0x7f
+	brlo draw_char_valid
+	ret
+
+	draw_char_valid:
+	; Glyph's first byte is at:
+	; glyph_pointer = font_starting_mem_pos + (ascii_code * number_of_bytes_per_font)
+	; But all the fonts are 1 byte large, so a glyph is 1*height bytes:
+	; glyph_pointer = FONT + (ascii_code * FONT_HEIGHT)
+
+	; Load first glyph position on Z
+	ldi ZH, high(FONT<<1)
+	ldi ZL, low(FONT<<1)
+	; Obtain offset multiplying ascii_code * number_of_bytes_per_font
+	ldi r17, FONT_HEIGHT
+	mul HIGH_ACCUM, r17	; result overwrites r0 and r1!
+	; 16-bit addition between gliph's first byte position and offset (and store result in Z) to obtain our glyph position
+	add ZL, r0
+	adc ZH, r1
+	; Z contain our glyph's first byte position: draw it
+	; Obtain drawing position in framebuffer memory (in Y)
+	call update_mem_pointer
+	; The drawing consist of FONT_HEIGHT cycles. Every glyph byte is placed on its own line
+	; on screen. To do this, we place it LINE_COLUMNS bytes after the previous one.
+	clr HIGH_ACCUM
+	draw_char_loop:
+		; Load glyph line byte from program memory (and point to the next)
+		lpm A, Z+
+		; Write glyph line to framebuffer at chunk cursor position (Y)
+		st Y, A
+		; Increment chunk cursor position (Y) to next line of the same char column
+		adiw YH:YL,LINE_COLUMNS
+		; Decrement loop counter and exit if reached 0
+		inc HIGH_ACCUM
+		cpi HIGH_ACCUM, FONT_HEIGHT
+		brlo draw_char_loop
+
+	; Char drawing is complete. Increment cursor position
+	inc POS_COLUMN
+	; Check if end of line
+	cpi POS_COLUMN, LINE_COLUMNS
+	brsh draw_char_eol
+	ret
+	draw_char_eol:
+		; end of line
+		clr POS_COLUMN	; reset column to 0
+		; Move cursor to next line
+		ldi HIGH_ACCUM, FONT_HEIGHT
+		add POS_ROWP, HIGH_ACCUM
+		; check if reached end of screen
+		cpi POS_ROWP, SCREEN_HEIGHT
+		brsh draw_char_eos
+		ret
+	draw_char_eos:
+		; end of screen: scroll screen but leave line pointer to last line
+		call scroll_screen
+		ret
+
+; Sets the cursor to 0,0 and clears fine position
+cursor_pos_home:
+	; Set all positions to 0
+	clr POS_COLUMN
+	clr POS_ROWP
+	ret
+
+; Draws a newline
+; Moves cursor to start of following screen line
+; Takes care of particular cases, i.e. end of screen (shifts all screen up by one line)
+draw_carriage_return:
+	; Move cursor to line start
+	ldi POS_COLUMN, 0
+	; Move cursor to next line
+	ldi HIGH_ACCUM, FONT_HEIGHT
+	add POS_ROWP, HIGH_ACCUM
+	; Check if end of screen
+	cpi POS_ROWP, SCREEN_HEIGHT
+	brsh draw_carriage_return_eos
+	ret
+	draw_carriage_return_eos:
+	call scroll_screen
+	ret
+
+; Scrolls the screen by one line (=LINE_COLUMNS*FONT_HEIGHT bytes)
+; and clears the last line (FRAMEBUFFER_END - LINE_COLUMNS*FONT_HEIGHT bytes)
+; @uses A, Z
+scroll_screen:
+	; "Read" Pointer to first char of second line
+	ldi YH, high(FRAMEBUFFER+(LINE_COLUMNS*FONT_HEIGHT))
+	ldi YL, low(FRAMEBUFFER+(LINE_COLUMNS*FONT_HEIGHT))
+	; "Write" Pointer to first char of first line
+	ldi ZH, high(FRAMEBUFFER)
+	ldi ZL, low(FRAMEBUFFER)
+	; Copy data
+	scroll_screen_copy_loop:
+		ld A, Y+
+		st Z+, A
+		cpi YH, high(FRAMEBUFFER_END)
+		brne scroll_screen_copy_loop
+		cpi YL, low(FRAMEBUFFER_END)
+		brne scroll_screen_copy_loop
+	; All the lines have been "shifted" up by one line.
+	; The first line is lost and the last is duplicate. Clear the last.
+	clr A
+	scroll_screen_clear_loop:
+		st Z+, A
+		cpi r31, high(FRAMEBUFFER_END)
+		brne scroll_screen_clear_loop
+		cpi r30, low(FRAMEBUFFER_END)
+		brne scroll_screen_clear_loop
+	; Last line cleared. Set cursor position
+	clr POS_COLUMN	; cursor to first column
+	ldi POS_ROWP, SCREEN_HEIGHT-FONT_HEIGHT
+	ret
+
+; Sets the Y register to point to the cursor's first line memory position
+; The cursor's position is represented by registers POS_COLUMN and POS_ROWP
+update_mem_pointer:
+	; Compute memory pointer offset: offset = (LINE_COLUMNS*POS_ROWP)+POS_COLUMN
+	; LINE_COLUMNS*POS_ROWP
+	ldi HIGH_ACCUM, LINE_COLUMNS
+	mul HIGH_ACCUM, POS_ROWP	; result overwrites r0 and r1!
+	; ...+POS_COLUMN
+	add r0, POS_COLUMN
+	clr HIGH_ACCUM
+	adc r1, HIGH_ACCUM
+	; Set pointer to start of framebuffer
+	ldi YL, low(FRAMEBUFFER)
+	ldi YH, high(FRAMEBUFFER)
+	; Add offset to pointer
+	add YL, r0
+	adc YH, r1
+	ret
+
+clear_screen:
+	ldi YH, high(FRAMEBUFFER)
+	ldi YL, low(FRAMEBUFFER)
+	load_mem_loop:
+		clr HIGH_ACCUM
+		;ser HIGH_ACCUM
+		st Y+, HIGH_ACCUM
+		; if reached the last framebuffer byte, exit cycle
+		cpi YH, high(FRAMEBUFFER_END)
+		brne load_mem_loop	; if not 0, repeat h_picture_loop
+		cpi YL, low(FRAMEBUFFER_END)
+		brne load_mem_loop	; if not 0, repeat h_picture_loop
+	ret

pat80-io-devices/composite-pal-adapter/software/avr-assembly/communication.asm

@@ -0,0 +1,53 @@
+; *******************************************
+; *    PAT80 COMPOSITE PAL VIDEO ADAPTER    *
+; *         Communication module            *
+; *******************************************
+;
+; @language: AVR ASM
+;
+; This file is part of Pat80 IO Devices.
+;
+; Pat80 IO Devices is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 IO Devices is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 IO Devices.  If not, see <http://www.gnu.org/licenses/>.
+;
+;
+; This module manages the communication between Pat80 and
+; the video adapter.
+
+; INTERNAL POINTER:
+; Internally, the last screen position is represented by 24 bits in two registers:
+; POS_COARSE: Register Y (16-bit, r31 and r30): Coarse position. Points to one of the chunks
+;    (character columns). 46 chunks per row, 304 rows. Used for character position, as
+;    1 chunk = 1 byte = 1 character.
+
+; Initializes and waits for a byte on PORTB
+comm_init:
+	call cursor_pos_home ; Set cursor to 0,0
+    comm_wait_byte:
+        in HIGH_ACCUM, DATA_PORT_IN   ; read PORTB
+        ; Check continuously CLK until a LOW is found
+        sbic PORTD, CLK_PIN
+        jmp comm_wait_byte
+        ; CLK triggered: Draw char
+        call draw_char
+        jmp comm_wait_byte
+
+        ; ; CLK triggered: Copy PORTB to the next framebuffer byte
+        ; st Y+, A
+        ; ; if reached the last framebuffer byte, exit cycle
+		; cpi r31, 0b00111110
+		; brne comm_wait_byte	; if not 0, repeat h_picture_loop
+		; cpi r30, 0b11000000
+		; brne comm_wait_byte	; if not 0, repeat h_picture_loop
+        ; jmp comm_init ; filled all memory: reset framebuffer position
+

pat80-io-devices/composite-pal-adapter/software/avr-assembly/example_data/cat.asm

@@ -0,0 +1,974 @@
+; Draws a cat example image
+draw_cat:
+	;*** Load data into ram ***
+	ldi YH, high(FRAMEBUFFER)
+	ldi YL, low(FRAMEBUFFER)
+	ldi ZH, high(CAT_IMAGE)
+	ldi ZL, low(CAT_IMAGE)
+	load_cat_loop:
+		lpm HIGH_ACCUM, Z+
+		st Y+, HIGH_ACCUM
+        ; wait
+        ; ser r19
+        ; cat_wait_loop_1:
+        ;     dec r19
+        ;     brne cat_wait_loop_1
+		; if reached the last framebuffer byte, exit cycle
+		cpi YH, high(FRAMEBUFFER_END)
+		brne load_cat_loop	; if not 0, repeat h_picture_loop
+		cpi YL, low(FRAMEBUFFER_END)
+		brne load_cat_loop	; if not 0, repeat h_picture_loop
+ret
+
+; Image of the mighty Pepa during a rest
+CAT_IMAGE: .db 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+.db 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+.db 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+.db 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x23, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x02, 0x00, 0x22, 0x22, 0x02, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x20, 0x22, 0x02, 0x82, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x54, 0x55, 0x55, 0x55, 0x45, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x54, 0x55, 0x55, 0xd5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x11, 0x11, 0x51, 0x11, 0x51, 0x51, 0x51, 0x15, 0x55,
+.db 0x55, 0xd5, 0x23, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x20, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x22, 0x20, 0x82,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x44,
+.db 0x44, 0x44, 0x44, 0x40, 0x44, 0x44, 0x55, 0x55, 0x54, 0xc5, 0x01, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x11, 0x15, 0x11, 0x11, 0x11,
+.db 0x11, 0x51, 0x55, 0x51, 0x55, 0xd5, 0x23, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x22, 0x00, 0x22, 0xa2, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x45, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x54, 0x55, 0x55,
+.db 0x45, 0xd5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x11, 0x55, 0x11, 0x11, 0x11,
+.db 0x11, 0x51, 0x11, 0x51, 0x11, 0x51, 0x55, 0x55, 0x55, 0xd5, 0x21, 0x22,
+.db 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22,
+.db 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22,
+.db 0x20, 0x22, 0x20, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x20, 0x20, 0x00, 0x82, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x45, 0x44, 0x44, 0x44, 0x44, 0x40, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x54, 0x55, 0x55, 0xd5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x15, 0x55, 0x15, 0x11, 0x11,
+.db 0x11, 0x11, 0x15, 0x55, 0x15, 0x15, 0x15, 0x15, 0x15, 0x11, 0x55, 0x55,
+.db 0x55, 0xd5, 0x23, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x02, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0xa2,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x54, 0x55, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x55, 0xd5, 0x01, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x51, 0x55, 0x11, 0x11,
+.db 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x51, 0x51, 0x55, 0x55, 0x55, 0x51,
+.db 0x55, 0x15, 0x11, 0x11, 0x11, 0xd5, 0x23, 0x20, 0x22, 0x22, 0x22, 0x20,
+.db 0x22, 0x22, 0x22, 0x20, 0x22, 0x22, 0x22, 0x20, 0x22, 0x22, 0x22, 0x20,
+.db 0x22, 0x22, 0x22, 0x20, 0x02, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x54, 0x55, 0x45, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x54, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0xc4, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x15, 0x15,
+.db 0x11, 0x11, 0x11, 0x15, 0x15, 0x15, 0x11, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x95, 0x23, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x22, 0x02, 0x00, 0x2a, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x02, 0x00, 0x00, 0x02, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x44, 0x55, 0x45, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x45, 0x44, 0x45, 0x55, 0xc5,
+.db 0x55, 0x55, 0x45, 0x55, 0x45, 0xd5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x88, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x51, 0x55, 0x55, 0x51,
+.db 0x51, 0x51, 0x11, 0x51, 0x11, 0x11, 0x11, 0x51, 0x11, 0x11, 0x51, 0x55,
+.db 0x51, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x75, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0xd5, 0x21, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22, 0x20, 0x22,
+.db 0x20, 0x22, 0x20, 0x02, 0x00, 0x20, 0x22, 0x02, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x20, 0xa2, 0x20, 0x00, 0x20, 0x00, 0x20, 0x80,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x44, 0x55, 0x55, 0x55, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x54,
+.db 0x55, 0x54, 0x55, 0x7d, 0x55, 0x55, 0x55, 0x55, 0x55, 0xd5, 0x01, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88,
+.db 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0xa8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x15, 0x15,
+.db 0x55, 0x55, 0x15, 0x15, 0x55, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x55,
+.db 0x15, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5f,
+.db 0x55, 0x55, 0x55, 0x55, 0x55, 0xd5, 0x23, 0x22, 0x22, 0x22, 0x22, 0x22,
+.db 0x22, 0x22, 0x22, 0x02, 0x00, 0x22, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x02, 0xa2, 0x2a, 0x22, 0x22,
+.db 0x22, 0x02, 0x22, 0xa2, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x44, 0x55, 0x55, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
+.db 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x45, 0x44, 0x45, 0x45,
+.db 0x44, 0x44, 0x55, 0x55, 0x55, 0x55, 0xd5, 0x5f, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0xd5, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88,
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+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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+.db 0xbb, 0xbb, 0xbb, 0xba, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+.db 0xaa, 0xa2, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
+.db 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+.db 0xff, 0xff, 0xff, 0xdd, 0xdd, 0xdd, 0xdd, 0x55, 0x55, 0x55, 0x55, 0x55,
+.db 0x55, 0x55, 0x55, 0x44, 0x44, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x40,
+.db 0x55, 0x54, 0x54, 0x54, 0x54, 0x44, 0x44, 0x40, 0x44, 0xd4, 0xef, 0xee,
+.db 0xee, 0xee, 0xee, 0xee, 0xee, 0xea, 0xea, 0xea, 0xea, 0xaa, 0xaa, 0xaa,
+.db 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0x88, 0x88, 0x80, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80

pat80-io-devices/composite-pal-adapter/software/avr-assembly/font.asm

@@ -0,0 +1,131 @@
+.equ FONT_HEIGHT = 8
+
+; Temporary dhepper's font8x8 adaptation (https://github.com/dhepper/font8x8)
+FONT: .db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0000 (nul)
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0001
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0002
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0003
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0004
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0005
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0006
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0007
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0008
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0009
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+000A
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+000B
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+000C
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+000D
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+000E
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+000F
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0010
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0011
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0012
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0013
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0014
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0015
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0016
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0017
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0018
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0019
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+001A
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+001B
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+001C
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+001D
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+001E
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+001F
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0020 (space)
+.db 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00,    ; U+0021 (!)
+.db 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0022 (")
+.db 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00,    ; U+0023 (#)
+.db 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00,    ; U+0024 ($)
+.db 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00,    ; U+0025 (%)
+.db 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00,    ; U+0026 (&)
+.db 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0027 (')
+.db 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00,    ; U+0028 (()
+.db 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00,    ; U+0029 ())
+.db 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00,    ; U+002A (*)
+.db 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00,    ; U+002B (+)
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06,    ; U+002C (,)
+.db 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00,    ; U+002D (-)
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00,    ; U+002E (.)
+.db 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00,    ; U+002F (/)
+.db 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00,    ; U+0030 (0)
+.db 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00,    ; U+0031 (1)
+.db 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00,    ; U+0032 (2)
+.db 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00,    ; U+0033 (3)
+.db 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00,    ; U+0034 (4)
+.db 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00,    ; U+0035 (5)
+.db 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00,    ; U+0036 (6)
+.db 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00,    ; U+0037 (7)
+.db 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00,    ; U+0038 (8)
+.db 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00,    ; U+0039 (9)
+.db 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00,    ; U+003A (:)
+.db 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06,    ; U+003B (;)
+.db 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00,    ; U+003C (<)
+.db 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00,    ; U+003D (=)
+.db 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00,    ; U+003E (>)
+.db 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00,    ; U+003F (?)
+.db 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00,    ; U+0040 (@)
+.db 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00,    ; U+0041 (A)
+.db 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00,    ; U+0042 (B)
+.db 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00,    ; U+0043 (C)
+.db 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00,    ; U+0044 (D)
+.db 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00,    ; U+0045 (E)
+.db 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00,    ; U+0046 (F)
+.db 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00,    ; U+0047 (G)
+.db 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00,    ; U+0048 (H)
+.db 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00,    ; U+0049 (I)
+.db 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00,    ; U+004A (J)
+.db 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00,    ; U+004B (K)
+.db 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00,    ; U+004C (L)
+.db 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00,    ; U+004D (M)
+.db 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00,    ; U+004E (N)
+.db 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00,    ; U+004F (O)
+.db 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00,    ; U+0050 (P)
+.db 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00,    ; U+0051 (Q)
+.db 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00,    ; U+0052 (R)
+.db 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00,    ; U+0053 (S)
+.db 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00,    ; U+0054 (T)
+.db 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00,    ; U+0055 (U)
+.db 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00,    ; U+0056 (V)
+.db 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00,    ; U+0057 (W)
+.db 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00,    ; U+0058 (X)
+.db 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00,    ; U+0059 (Y)
+.db 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00,    ; U+005A (Y)
+.db 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00,    ; U+005B ([)
+.db 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00,    ; U+005C (\)
+.db 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00,    ; U+005D (])
+.db 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00,    ; U+005E (^)
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,    ; U+005F (_)
+.db 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+0060 (`)
+.db 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00,    ; U+0061 (a)
+.db 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00,    ; U+0062 (b)
+.db 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00,    ; U+0063 (c)
+.db 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00,    ; U+0064 (d)
+.db 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00,    ; U+0065 (e)
+.db 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00,    ; U+0066 (f)
+.db 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F,    ; U+0067 (g)
+.db 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00,    ; U+0068 (h)
+.db 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00,    ; U+0069 (i)
+.db 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E,    ; U+006A (j)
+.db 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00,    ; U+006B (k)
+.db 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00,    ; U+006C (l)
+.db 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00,    ; U+006D (m)
+.db 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00,    ; U+006E (n)
+.db 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00,    ; U+006F (o)
+.db 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F,    ; U+0070 (p)
+.db 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78,    ; U+0071 (q)
+.db 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00,    ; U+0072 (r)
+.db 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00,    ; U+0073 (s)
+.db 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00,    ; U+0074 (t)
+.db 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00,    ; U+0075 (u)
+.db 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00,    ; U+0076 (v)
+.db 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00,    ; U+0077 (w)
+.db 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00,    ; U+0078 (x)
+.db 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F,    ; U+0079 (y)
+.db 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00,    ; U+007A (z)
+.db 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00,    ; U+007B ({)
+.db 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00,    ; U+007C (|)
+.db 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00,    ; U+007D (})
+.db 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,    ; U+007E (~)
+.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00     ; U+007F

pat80-io-devices/composite-pal-adapter/software/avr-assembly/main.asm

@@ -1,142 +1,204 @@
 ; VIDEO COMPOSITE PAL IO DEVICE
-; Implemented following timings in http://blog.retroleum.co.uk/electronics-articles/pal-tv-timing-and-voltages/
+;
+; @language: AVR ASM
+;
+; This file is part of Pat80 IO Devices.
+;
+; Pat80 IO Devices is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; Pat80 IO Devices is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with Pat80 IO Devices.  If not, see <http://www.gnu.org/licenses/>.
+;
+;
+; INTERFACING WITH PAT80:
+; Use PortB as data port. Before writing anything, issue a read (pin RW HIGH) and check the busy pin on the data port. 
+; If the busy pin is high, retry reading until goes low. When the busy pin goes low, we have... TODO
+;
+; ELECTRONICALLY:
+; The data port PB0 is tied to ground with a 1KOhm resistance. When the MC is busy drawing the screen, the data port is in
+; high impedance state, so that avoids causing bus contention, but when read returns a 0bXXXXXXX0 byte. When the MC starts vsync,
+; begins checking the port for data... TODO
+;
+; PINS:
+; Video:
+;     Video pin: PA0 (pin 1) (but all PORTA is used)
+;     Sync pin: PC0 (pin 22)
+; Communication:
+;     Data port is PORTB [INPUT]
+;     CLK (clock) signal is on PORTD0 [INPUT]
+;     RS (register select) on PORTD1 [INPUT]
+;     BUSY signal is on PORTD2 [OUTPUT]
+; Debug:
+;     Debug hsync single pulse on pin: PC1 (pin 23) (may be disabled)
+;
 
-.include "atmega1284definition.asm"
+.include "m1284def.inc" ; Atmega 1280 device definition
 
-; define constant
+; *** reserved registers ***
-.equ SYNC_PIN = PD7		; Sync pin is on Port D 7 (pin 21)
+; Video generator registers:
-.equ VIDEO_PIN = PD6	; Video pin is on Port D 6 (pin 20)
+; X(R27, R26)
+.def STATUS = r25	; signal status (see STATUS TABLE)
+.def VG_HIGH_ACCUM = r24 ; an accumulator in high registers to be used only by video_generator in interrupt
+.def LINE_COUNTER = r23
+
+; Character generator registers:
+.def POS_COLUMN = r22 ; POS_COLUMN (0-46) represents the character/chunk column
+.def POS_ROWP = r21 ; POS_ROWP (0-255) represent the chunk row. The caracter row is POS_ROWP/FONT_HEIGHT
+.def HIGH_ACCUM = r20 ; an accumulator in high registers to be used outside of interrupts
+.def A = r0	; general purpose accumulator to be used outside of interrupts
+
+; Hardware pins and ports
+.equ VIDEO_PORT_OUT = PORTA		; Used all PORTA, but connected only PA0
+.equ SYNC_PIN = PC0			; Sync pin (pin 22)
+.equ DEBUG_PIN = PC1		; DEBUG: Single vertical sync pulse to trigger oscilloscope (pin 23)
+.equ DATA_PORT_IN = PIND
+.equ CLK_PIN = PC2
+.equ RS_PIN = PC3
+.equ BUSY_PIN = PC4
+
+; Memory map
+.equ FRAMEBUFFER = 0x0F70
+.equ FRAMEBUFFER_END = 0x3C00
+.equ SCREEN_HEIGHT = 248
 
 ; start vector
 .org 0x0000
-	rjmp	main			; jump to main label
+	rjmp	main			; reset vector: jump to main label
+.org 0x001E
+	rjmp	on_tim1_ovf		; interrupt for timer 1 overflow (used by video generation)
 
+.org 0x40
 ; main program
 main:
-	sbi	DDRD, SYNC_PIN		; set pin as output
+	; **** I/O SETUP ****
-	sbi	DDRD, VIDEO_PIN		; set pin as output
 
-v_refresh_loop:
+	; pins setup
-	; start 5 long sync pulses
+	sbi	DDRC, SYNC_PIN		; set pin as output
-	call long_sync
+	sbi	DDRC, DEBUG_PIN		; set pin as output
-	call long_sync
+	sbi	DDRC, BUSY_PIN		; set pin as output
-	call long_sync
+	cbi DDRD, CLK_PIN		; set pin as input
-	call long_sync
+	ldi	HIGH_ACCUM, 0xFF
-	call long_sync
+	out DDRA, HIGH_ACCUM			; set port as output (contains video pin)
-	; end 5 long sync pulses
+	ldi	HIGH_ACCUM, 0x00
+	out DDRB, HIGH_ACCUM			; set port as input (used as data bus)
 
-	; start 5 short sync pulses
-	call short_sync
-	call short_sync
-	call short_sync
-	call short_sync
-	call short_sync
-	; end 5 short sync pulses
 
-	; start 304 picture lines
+	; **** MEMORY SETUP ****
-	ldi r16, 2
-	h_picture_outer_loop:
-		ldi r17, 152	; line counter
-		h_picture_loop:
-			; start line sync: 4uS, 96 cycles @ 24Mhz
-			cbi	PORTD, SYNC_PIN	; sync goes low (0v)					; 2 cycle
-			ldi r18, 32													; 1 cycle
-			l_sync_pulse_loop: ; requires 3 cpu cycles
-				dec r18													; 1 cycle
-				brne l_sync_pulse_loop  								; 2 cycle if true, 1 if false
-			sbi	PORTD, SYNC_PIN	; sync goes high (0.3v)
-			; end line sync
 
-			; start back porch: 8uS, 192 cycles @ 24Mhz
+	call clear_screen
-			ldi r18, 64													; 1 cycle
-			l_sync_back_porch_loop:
-				dec r18													; 1 cycle
-				brne l_sync_back_porch_loop  							; 2 cycle if true, 1 if false
-			; end back porch
 
-			; start image: 52uS, 1247 cycles @ 24Mhz
-			; 3 bande da 416 cicli
 	
-			sbi	PORTD, VIDEO_PIN	; video goes high					; 2 cycle
 
-			ldi r18, 138													; 1 cycle
-			l_sync_video_loop1:
-				dec r18													; 1 cycle
-				brne l_sync_video_loop1  								; 2 cycle if true, 1 if false
 
-			cbi	PORTD, VIDEO_PIN	; video goes low
 
-			ldi r18, 137												; 1 cycle
+	; **** TIMERS AND DRAWING IMAGE ROUTINES SETUP ****
-			l_sync_video_loop2:
-				dec r18													; 1 cycle
-				brne l_sync_video_loop2 								; 2 cycle if true, 1 if false
 
-			sbi	PORTD, VIDEO_PIN	; video goes high
+	; Timer setup (use 16-bit counter TC1)
+	; The Power Reduction TC1 and TC3 bits in the Power Reduction Registers (PRR0.PRTIM1 and
+	; PRR1.PRTIM3) must be written to zero to enable the TC1 and TC3 module.
+	ldi HIGH_ACCUM, 0b00000000
+	sts	PRR0, HIGH_ACCUM
+	; Set timer prescaler to 1:1
+    LDI HIGH_ACCUM,0b00000001
+    sts TCCR1B,HIGH_ACCUM
+	; Enambe timer1 overflow interrupt
+    LDI HIGH_ACCUM,0b00000001
+    STS TIMSK1,HIGH_ACCUM
+	; Enable interrupts globally
+    SEI
+	; Timer setup completed.
 
-			ldi r18, 138												; 1 cycle
-			l_sync_video_loop3:
-				dec r18													; 1 cycle
-				brne l_sync_video_loop3  								; 2 cycle if true, 1 if false
-			cbi	PORTD, VIDEO_PIN	; video goes low
 
-			; end image
 
-			dec r17 ; decrement line counter
-			brne h_picture_loop	; if not 0, repeat h_picture_loop
 
-		dec r16 ; decrement outside counter
+	; **** MAIN ROUTINE ****
-		brne h_picture_outer_loop	; if not 0, repeat h_picture_loop
-	; end picture lines
 
-	; start 6 short sync pulses
+	; Wait for data (it never exits)
-	call short_sync
+	;jmp comm_init
-	call short_sync
-	call short_sync
-	call short_sync
-	call short_sync
-	; end 6 short sync pulses
 
-	jmp v_refresh_loop
-; end vertical refresh
 
-long_sync:
+	; draw example image
-	; long sync: 30uS low (719 cycles @ 24Mhz), 2uS high (48 cycles @ 24Mhz)
+	;call draw_cat
-	cbi	PORTD, SYNC_PIN	; sync goes low (0v)					; 2 cycle
 
-	ldi r18, 120												; 1 cycle
+	; test draw character routine
-	long_sync_low_loop: ; requires 6 cpu cycles
+	call cursor_pos_home
-		nop														; 1 cycle
+	dctest:
-		nop														; 1 cycle
+		ldi r18, 0x41
-		nop														; 1 cycle
+		draw_chars:
-		dec r18													; 1 cycle
+			mov HIGH_ACCUM, r18
-		brne long_sync_low_loop  								; 2 cycle if true, 1 if false
+			call draw_char
+			dc_continue:
+			; wait
+			ser r19
+			dc_wait_loop_1:
+				ser r16
+				dc_wait_loop_2:
+					dec r16
+					brne dc_wait_loop_2
+				dec r19
+				brne dc_wait_loop_1
+			; wait
+			; ser r19
+			; dc_wait_loop_a1:
+			; 	ser r16
+			; 	dc_wait_loop_a2:
+			; 		dec r16
+			; 		brne dc_wait_loop_a2
+			; 	dec r19
+			; 	brne dc_wait_loop_a1
+			; ; wait
+			; ser r19
+			; dc_wait_loop_s1:
+			; 	ser r16
+			; 	dc_wait_loop_s2:
+			; 		dec r16
+			; 		brne dc_wait_loop_s2
+			; 	dec r19
+			; 	brne dc_wait_loop_s1
+			; ; wait
+			; ser r19
+			; dc_wait_loop_d1:
+			; 	ser r16
+			; 	dc_wait_loop_d2:
+			; 		dec r16
+			; 		brne dc_wait_loop_d2
+			; 	dec r19
+			; 	brne dc_wait_loop_d1
+			; ; wait
+			; ser r19
+			; dc_wait_loop_f1:
+			; 	ser r16
+			; 	dc_wait_loop_f2:
+			; 		dec r16
+			; 		brne dc_wait_loop_f2
+			; 	dec r19
+			; 	brne dc_wait_loop_f1
 
-	sbi	PORTD, SYNC_PIN	; sync goes high (0.3v)
+			inc r18
+			cpi r18, 0x5B
+			brne draw_chars
+		call draw_carriage_return
+		jmp dctest
 
-	ldi r18, 16													; 1 cycle
-	long_sync_high_loop: ; requires 3 cpu cycles
-		dec r18													; 1 cycle
-		brne long_sync_high_loop  								; 2 cycle if true, 1 if false
 	
-	ret
 
-short_sync:
-	; short sync: 2uS low (48 cycles @ 24Mhz), 30uS high
-	cbi	PORTD, SYNC_PIN	; sync goes low (0v)					; 2 cycle
 
-	ldi r18, 16													; 1 cycle
+	forever:
-	short_sync_low_loop: ; requires 3 cpu cycles
+		jmp forever
-		dec r18													; 1 cycle
-		brne long_sync_low_loop  								; 2 cycle if true, 1 if false
 
-	sbi	PORTD, SYNC_PIN	; sync goes high (0.3v)
 
-	ldi r18, 120												; 1 cycle
-	short_sync_high_loop: ; requires 6 cpu cycles
-		nop														; 1 cycle
-		nop														; 1 cycle
-		nop														; 1 cycle
-		dec r18													; 1 cycle
-		brne short_sync_high_loop  								; 2 cycle if true, 1 if false
 
-	ret
+
+.include "video_generator.asm" ; Asyncronous timer-interrupt-based video generation
+.include "character_generator.asm" ; Character generator
+;.include "communication.asm" ; Communication with Pat80
+.include "font.asm"	; Font face
+;.include "example_data/cat.asm"	; Cat image

pat80-io-devices/composite-pal-adapter/software/avr-assembly/main.hex

@@ -1,4 +0,0 @@
-:020000020000FC
-:1000000000C0579A4F995F984F9B5F9A40E230E447
-:1000100020E82A95F1F73A95D9F74A95C1F7F2CF3A
-:00000001FF

pat80-io-devices/keyboard/hardware/keyboard/LICENSE.md

@@ -0,0 +1,18 @@
+# Hardware
+This folder contains the Pat80 keyboard schematics and PCB layout.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

pat80-io-devices/keyboard/hardware/keyboard/fp-lib-table

@@ -0,0 +1,3 @@
+(fp_lib_table
+  (lib (name footprints)(type KiCad)(uri /home/danieleverducci/git/pato-z80-home-computer/kicad-symbols/footprints.pretty)(options "")(descr ""))
+)

pat80-io-devices/keyboard/hardware/keyboard/keyboard-cache.lib

@@ -0,0 +1,235 @@
+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+# Connector_Generic_Conn_02x17_Odd_Even
+#
+DEF Connector_Generic_Conn_02x17_Odd_Even J 0 40 Y N 1 F N
+F0 "J" 50 900 50 H V C CNN
+F1 "Connector_Generic_Conn_02x17_Odd_Even" 50 -900 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_2x??_*
+$ENDFPLIST
+DRAW
+S -50 -795 0 -805 1 1 6 N
+S -50 -695 0 -705 1 1 6 N
+S -50 -595 0 -605 1 1 6 N
+S -50 -495 0 -505 1 1 6 N
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 505 0 495 1 1 6 N
+S -50 605 0 595 1 1 6 N
+S -50 705 0 695 1 1 6 N
+S -50 805 0 795 1 1 6 N
+S -50 850 150 -850 1 1 10 f
+S 150 -795 100 -805 1 1 6 N
+S 150 -695 100 -705 1 1 6 N
+S 150 -595 100 -605 1 1 6 N
+S 150 -495 100 -505 1 1 6 N
+S 150 -395 100 -405 1 1 6 N
+S 150 -295 100 -305 1 1 6 N
+S 150 -195 100 -205 1 1 6 N
+S 150 -95 100 -105 1 1 6 N
+S 150 5 100 -5 1 1 6 N
+S 150 105 100 95 1 1 6 N
+S 150 205 100 195 1 1 6 N
+S 150 305 100 295 1 1 6 N
+S 150 405 100 395 1 1 6 N
+S 150 505 100 495 1 1 6 N
+S 150 605 100 595 1 1 6 N
+S 150 705 100 695 1 1 6 N
+S 150 805 100 795 1 1 6 N
+X Pin_1 1 -200 800 150 R 50 50 1 1 P
+X Pin_10 10 300 400 150 L 50 50 1 1 P
+X Pin_11 11 -200 300 150 R 50 50 1 1 P
+X Pin_12 12 300 300 150 L 50 50 1 1 P
+X Pin_13 13 -200 200 150 R 50 50 1 1 P
+X Pin_14 14 300 200 150 L 50 50 1 1 P
+X Pin_15 15 -200 100 150 R 50 50 1 1 P
+X Pin_16 16 300 100 150 L 50 50 1 1 P
+X Pin_17 17 -200 0 150 R 50 50 1 1 P
+X Pin_18 18 300 0 150 L 50 50 1 1 P
+X Pin_19 19 -200 -100 150 R 50 50 1 1 P
+X Pin_2 2 300 800 150 L 50 50 1 1 P
+X Pin_20 20 300 -100 150 L 50 50 1 1 P
+X Pin_21 21 -200 -200 150 R 50 50 1 1 P
+X Pin_22 22 300 -200 150 L 50 50 1 1 P
+X Pin_23 23 -200 -300 150 R 50 50 1 1 P
+X Pin_24 24 300 -300 150 L 50 50 1 1 P
+X Pin_25 25 -200 -400 150 R 50 50 1 1 P
+X Pin_26 26 300 -400 150 L 50 50 1 1 P
+X Pin_27 27 -200 -500 150 R 50 50 1 1 P
+X Pin_28 28 300 -500 150 L 50 50 1 1 P
+X Pin_29 29 -200 -600 150 R 50 50 1 1 P
+X Pin_3 3 -200 700 150 R 50 50 1 1 P
+X Pin_30 30 300 -600 150 L 50 50 1 1 P
+X Pin_31 31 -200 -700 150 R 50 50 1 1 P
+X Pin_32 32 300 -700 150 L 50 50 1 1 P
+X Pin_33 33 -200 -800 150 R 50 50 1 1 P
+X Pin_34 34 300 -800 150 L 50 50 1 1 P
+X Pin_4 4 300 700 150 L 50 50 1 1 P
+X Pin_5 5 -200 600 150 R 50 50 1 1 P
+X Pin_6 6 300 600 150 L 50 50 1 1 P
+X Pin_7 7 -200 500 150 R 50 50 1 1 P
+X Pin_8 8 300 500 150 L 50 50 1 1 P
+X Pin_9 9 -200 400 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_C
+#
+DEF Device_C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "Device_C" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ C_*
+$ENDFPLIST
+DRAW
+P 2 0 1 20 -80 -30 80 -30 N
+P 2 0 1 20 -80 30 80 30 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_D
+#
+DEF Device_D D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "Device_D" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ TO-???*
+ *_Diode_*
+ *SingleDiode*
+ D_*
+$ENDFPLIST
+DRAW
+P 2 0 1 8 -50 50 -50 -50 N
+P 2 0 1 0 50 0 -50 0 N
+P 4 0 1 8 50 50 50 -50 -50 0 50 50 N
+X K 1 -150 0 100 R 50 50 1 1 P
+X A 2 150 0 100 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_LED
+#
+DEF Device_LED D 0 40 N N 1 F N
+F0 "D" 0 100 50 H V C CNN
+F1 "Device_LED" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ LED*
+ LED_SMD:*
+ LED_THT:*
+$ENDFPLIST
+DRAW
+P 2 0 1 8 -50 -50 -50 50 N
+P 2 0 1 0 -50 0 50 0 N
+P 4 0 1 8 50 -50 50 50 -50 0 50 -50 N
+P 5 0 1 0 -120 -30 -180 -90 -150 -90 -180 -90 -180 -60 N
+P 5 0 1 0 -70 -30 -130 -90 -100 -90 -130 -90 -130 -60 N
+X K 1 -150 0 100 R 50 50 1 1 P
+X A 2 150 0 100 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_R
+#
+DEF Device_R R 0 0 N Y 1 F N
+F0 "R" 80 0 50 V V C CNN
+F1 "Device_R" 0 0 50 V V C CNN
+F2 "" -70 0 50 V I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+$ENDFPLIST
+DRAW
+S -40 -100 40 100 0 1 10 N
+X ~ 1 0 150 50 D 50 50 1 1 P
+X ~ 2 0 -150 50 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Switch_SW_DPDT_x2
+#
+DEF Switch_SW_DPDT_x2 SW 0 0 Y N 2 F N
+F0 "SW" 0 170 50 H V C CNN
+F1 "Switch_SW_DPDT_x2" 0 -200 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ SW*DPDT*
+$ENDFPLIST
+DRAW
+C -80 0 20 0 0 0 N
+C 80 -100 20 0 0 0 N
+C 80 100 20 0 1 0 N
+P 2 0 1 0 -60 10 65 90 N
+X A 1 200 100 100 L 50 50 1 1 P
+X B 2 -200 0 100 R 50 50 1 1 P
+X C 3 200 -100 100 L 50 50 1 1 P
+X A 4 200 100 100 L 50 50 2 1 P
+X B 5 -200 0 100 R 50 50 2 1 P
+X C 6 200 -100 100 L 50 50 2 1 P
+ENDDRAW
+ENDDEF
+#
+# Switch_SW_Push
+#
+DEF Switch_SW_Push SW 0 40 N N 1 F N
+F0 "SW" 50 100 50 H V L CNN
+F1 "Switch_SW_Push" 0 -60 50 H V C CNN
+F2 "" 0 200 50 H I C CNN
+F3 "" 0 200 50 H I C CNN
+DRAW
+C -80 0 20 0 1 0 N
+C 80 0 20 0 1 0 N
+P 2 0 1 0 0 50 0 120 N
+P 2 0 1 0 100 50 -100 50 N
+X 1 1 -200 0 100 R 50 50 0 1 P
+X 2 2 200 0 100 L 50 50 0 1 P
+ENDDRAW
+ENDDEF
+#
+# power_GND
+#
+DEF power_GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "power_GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# power_VCC
+#
+DEF power_VCC #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_VCC" 0 150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+C 0 75 25 0 1 0 N
+P 2 0 1 0 0 0 0 50 N
+X VCC 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+#End Library

pat80-io-devices/keyboard/hardware/keyboard/keyboard.pro

@@ -0,0 +1,252 @@
+update=mar 30 mar 2021 07:28:33 CEST
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+[schematic_editor]
+version=1
+PageLayoutDescrFile=
+PlotDirectoryName=
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=Pcbnew
+SpiceAjustPassiveValues=0
+LabSize=50
+ERC_TestSimilarLabels=1
+[pcbnew]
+version=1
+PageLayoutDescrFile=
+LastNetListRead=keyboard.net
+CopperLayerCount=2
+BoardThickness=1.6
+AllowMicroVias=0
+AllowBlindVias=0
+RequireCourtyardDefinitions=0
+ProhibitOverlappingCourtyards=1
+MinTrackWidth=0.2
+MinViaDiameter=0.4
+MinViaDrill=0.3
+MinMicroViaDiameter=0.2
+MinMicroViaDrill=0.09999999999999999
+MinHoleToHole=0.25
+TrackWidth1=0.25
+TrackWidth2=0.5
+TrackWidth3=1
+ViaDiameter1=0.8
+ViaDrill1=0.4
+ViaDiameter2=2
+ViaDrill2=0.5
+dPairWidth1=0.2
+dPairGap1=0.25
+dPairViaGap1=0.25
+SilkLineWidth=0.12
+SilkTextSizeV=1
+SilkTextSizeH=1
+SilkTextSizeThickness=0.15
+SilkTextItalic=0
+SilkTextUpright=1
+CopperLineWidth=0.2
+CopperTextSizeV=1.5
+CopperTextSizeH=1.5
+CopperTextThickness=0.3
+CopperTextItalic=0
+CopperTextUpright=1
+EdgeCutLineWidth=0.05
+CourtyardLineWidth=0.05
+OthersLineWidth=0.15
+OthersTextSizeV=1
+OthersTextSizeH=1
+OthersTextSizeThickness=0.15
+OthersTextItalic=0
+OthersTextUpright=1
+SolderMaskClearance=0
+SolderMaskMinWidth=0
+SolderPasteClearance=0
+SolderPasteRatio=-0
+[pcbnew/Layer.F.Cu]
+Name=F.Cu
+Type=0
+Enabled=1
+[pcbnew/Layer.In1.Cu]
+Name=In1.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In2.Cu]
+Name=In2.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In3.Cu]
+Name=In3.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In4.Cu]
+Name=In4.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In5.Cu]
+Name=In5.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In6.Cu]
+Name=In6.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In7.Cu]
+Name=In7.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In8.Cu]
+Name=In8.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In9.Cu]
+Name=In9.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In10.Cu]
+Name=In10.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In11.Cu]
+Name=In11.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In12.Cu]
+Name=In12.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In13.Cu]
+Name=In13.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In14.Cu]
+Name=In14.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In15.Cu]
+Name=In15.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In16.Cu]
+Name=In16.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In17.Cu]
+Name=In17.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In18.Cu]
+Name=In18.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In19.Cu]
+Name=In19.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In20.Cu]
+Name=In20.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In21.Cu]
+Name=In21.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In22.Cu]
+Name=In22.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In23.Cu]
+Name=In23.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In24.Cu]
+Name=In24.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In25.Cu]
+Name=In25.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In26.Cu]
+Name=In26.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In27.Cu]
+Name=In27.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In28.Cu]
+Name=In28.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In29.Cu]
+Name=In29.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In30.Cu]
+Name=In30.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.B.Cu]
+Name=B.Cu
+Type=0
+Enabled=1
+[pcbnew/Layer.B.Adhes]
+Enabled=1
+[pcbnew/Layer.F.Adhes]
+Enabled=1
+[pcbnew/Layer.B.Paste]
+Enabled=1
+[pcbnew/Layer.F.Paste]
+Enabled=1
+[pcbnew/Layer.B.SilkS]
+Enabled=1
+[pcbnew/Layer.F.SilkS]
+Enabled=1
+[pcbnew/Layer.B.Mask]
+Enabled=1
+[pcbnew/Layer.F.Mask]
+Enabled=1
+[pcbnew/Layer.Dwgs.User]
+Enabled=1
+[pcbnew/Layer.Cmts.User]
+Enabled=1
+[pcbnew/Layer.Eco1.User]
+Enabled=1
+[pcbnew/Layer.Eco2.User]
+Enabled=1
+[pcbnew/Layer.Edge.Cuts]
+Enabled=1
+[pcbnew/Layer.Margin]
+Enabled=1
+[pcbnew/Layer.B.CrtYd]
+Enabled=1
+[pcbnew/Layer.F.CrtYd]
+Enabled=1
+[pcbnew/Layer.B.Fab]
+Enabled=1
+[pcbnew/Layer.F.Fab]
+Enabled=1
+[pcbnew/Layer.Rescue]
+Enabled=0
+[pcbnew/Netclasses]
+[pcbnew/Netclasses/Default]
+Name=Default
+Clearance=0.2
+TrackWidth=0.25
+ViaDiameter=0.8
+ViaDrill=0.4
+uViaDiameter=0.3
+uViaDrill=0.1
+dPairWidth=0.2
+dPairGap=0.25
+dPairViaGap=0.25

pat80-io-devices/keyboard/hardware/keyboard/sym-lib-table

@@ -0,0 +1,3 @@
+(sym_lib_table
+  (lib (name pat80)(type Legacy)(uri /home/danieleverducci/git/pato-z80-home-computer/kicad-symbols/pat80.lib)(options "")(descr ""))
+)

pat80-io-devices/keyboard/hardware/keyboard_controller/LICENSE.md

@@ -0,0 +1,18 @@
+# Hardware
+This folder contains the Pat80 keyboard controller IO card schematics and PCB layout.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

pat80-io-devices/keyboard/hardware/keyboard_controller/fp-lib-table

@@ -0,0 +1,3 @@
+(fp_lib_table
+  (lib (name footprints)(type KiCad)(uri /home/danieleverducci/git/pato-z80-home-computer/kicad-symbols/footprints.pretty)(options "")(descr ""))
+)

pat80-io-devices/keyboard/hardware/keyboard_controller/keyboard-cache.lib

@@ -0,0 +1,297 @@
+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+# 74xx_74HC244
+#
+DEF 74xx_74HC244 U 0 40 Y Y 1 L N
+F0 "U" -300 650 50 H V C CNN
+F1 "74xx_74HC244" -300 -650 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+ALIAS 74HCT244
+$FPLIST
+ TSSOP*4.4x6.5mm*P0.65mm*
+ SSOP*4.4x6.5mm*P0.65mm*
+$ENDFPLIST
+DRAW
+S -300 600 300 -600 1 1 10 f
+P 4 1 0 6 50 0 -50 50 -50 -50 50 0 N
+X 1OE 1 -500 -400 200 R 50 50 1 0 I I
+X GND 10 0 -800 200 U 50 50 1 0 W
+X 2A3 11 -500 -200 200 R 50 50 1 0 I
+X 1Y3 12 500 200 200 L 50 50 1 0 O
+X 2A2 13 -500 -100 200 R 50 50 1 0 I
+X 1Y2 14 500 300 200 L 50 50 1 0 O
+X 2A1 15 -500 0 200 R 50 50 1 0 I
+X 1Y1 16 500 400 200 L 50 50 1 0 O
+X 2A0 17 -500 100 200 R 50 50 1 0 I
+X 1Y0 18 500 500 200 L 50 50 1 0 O
+X 2OE 19 -500 -500 200 R 50 50 1 0 I I
+X 1A0 2 -500 500 200 R 50 50 1 0 I
+X VCC 20 0 800 200 D 50 50 1 0 W
+X 2Y0 3 500 100 200 L 50 50 1 0 O
+X 1A1 4 -500 400 200 R 50 50 1 0 I
+X 2Y1 5 500 0 200 L 50 50 1 0 O
+X 1A2 6 -500 300 200 R 50 50 1 0 I
+X 2Y2 7 500 -100 200 L 50 50 1 0 O
+X 1A3 8 -500 200 200 R 50 50 1 0 I
+X 2Y3 9 500 -200 200 L 50 50 1 0 O
+ENDDRAW
+ENDDEF
+#
+# 74xx_74LS138
+#
+DEF 74xx_74LS138 U 0 40 Y Y 1 L N
+F0 "U" -300 450 50 H V C CNN
+F1 "74xx_74LS138" -300 -550 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DIP?16*
+$ENDFPLIST
+DRAW
+S -300 400 300 -500 1 1 10 f
+X A0 1 -500 300 200 R 50 50 1 0 I
+X O5 10 500 -200 200 L 50 50 1 0 O V
+X O4 11 500 -100 200 L 50 50 1 0 O V
+X O3 12 500 0 200 L 50 50 1 0 O V
+X O2 13 500 100 200 L 50 50 1 0 O V
+X O1 14 500 200 200 L 50 50 1 0 O V
+X O0 15 500 300 200 L 50 50 1 0 O V
+X VCC 16 0 600 200 D 50 50 1 0 W
+X A1 2 -500 200 200 R 50 50 1 0 I
+X A2 3 -500 100 200 R 50 50 1 0 I
+X E1 4 -500 -400 200 R 50 50 1 0 I L
+X E2 5 -500 -300 200 R 50 50 1 0 I L
+X E3 6 -500 -200 200 R 50 50 1 0 I
+X O7 7 500 -400 200 L 50 50 1 0 O V
+X GND 8 0 -700 200 U 50 50 1 0 W
+X O6 9 500 -300 200 L 50 50 1 0 O V
+ENDDRAW
+ENDDEF
+#
+# Connector_DB9_Female_MountingHoles
+#
+DEF Connector_DB9_Female_MountingHoles J 0 40 Y N 1 F N
+F0 "J" 0 650 50 H V C CNN
+F1 "Connector_DB9_Female_MountingHoles" 0 575 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ DSUB*Female*
+$ENDFPLIST
+DRAW
+C -70 -400 30 0 1 0 N
+C -70 -200 30 0 1 0 N
+C -70 0 30 0 1 0 N
+C -70 200 30 0 1 0 N
+C -70 400 30 0 1 0 N
+C 50 -300 30 0 1 0 N
+C 50 -100 30 0 1 0 N
+C 50 100 30 0 1 0 N
+C 50 300 30 0 1 0 N
+P 2 0 1 0 -150 -400 -100 -400 N
+P 2 0 1 0 -150 -300 20 -300 N
+P 2 0 1 0 -150 -200 -100 -200 N
+P 2 0 1 0 -150 -100 20 -100 N
+P 2 0 1 0 -150 0 -100 0 N
+P 2 0 1 0 -150 100 20 100 N
+P 2 0 1 0 -150 200 -100 200 N
+P 2 0 1 0 -150 300 20 300 N
+P 2 0 1 0 -150 400 -100 400 N
+P 5 0 1 10 -150 525 -150 -525 150 -375 150 375 -150 525 f
+X PAD 0 0 -600 150 U 50 50 1 1 P
+X 1 1 -300 400 150 R 50 50 1 1 P
+X 2 2 -300 200 150 R 50 50 1 1 P
+X 3 3 -300 0 150 R 50 50 1 1 P
+X 4 4 -300 -200 150 R 50 50 1 1 P
+X 5 5 -300 -400 150 R 50 50 1 1 P
+X 6 6 -300 300 150 R 50 50 1 1 P
+X 7 7 -300 100 150 R 50 50 1 1 P
+X 8 8 -300 -100 150 R 50 50 1 1 P
+X 9 9 -300 -300 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Connector_Generic_Conn_01x19
+#
+DEF Connector_Generic_Conn_01x19 J 0 40 Y N 1 F N
+F0 "J" 0 1000 50 H V C CNN
+F1 "Connector_Generic_Conn_01x19" 0 -1000 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_1x??_*
+$ENDFPLIST
+DRAW
+S -50 -895 0 -905 1 1 6 N
+S -50 -795 0 -805 1 1 6 N
+S -50 -695 0 -705 1 1 6 N
+S -50 -595 0 -605 1 1 6 N
+S -50 -495 0 -505 1 1 6 N
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 505 0 495 1 1 6 N
+S -50 605 0 595 1 1 6 N
+S -50 705 0 695 1 1 6 N
+S -50 805 0 795 1 1 6 N
+S -50 905 0 895 1 1 6 N
+S -50 950 50 -950 1 1 10 f
+X Pin_1 1 -200 900 150 R 50 50 1 1 P
+X Pin_10 10 -200 0 150 R 50 50 1 1 P
+X Pin_11 11 -200 -100 150 R 50 50 1 1 P
+X Pin_12 12 -200 -200 150 R 50 50 1 1 P
+X Pin_13 13 -200 -300 150 R 50 50 1 1 P
+X Pin_14 14 -200 -400 150 R 50 50 1 1 P
+X Pin_15 15 -200 -500 150 R 50 50 1 1 P
+X Pin_16 16 -200 -600 150 R 50 50 1 1 P
+X Pin_17 17 -200 -700 150 R 50 50 1 1 P
+X Pin_18 18 -200 -800 150 R 50 50 1 1 P
+X Pin_19 19 -200 -900 150 R 50 50 1 1 P
+X Pin_2 2 -200 800 150 R 50 50 1 1 P
+X Pin_3 3 -200 700 150 R 50 50 1 1 P
+X Pin_4 4 -200 600 150 R 50 50 1 1 P
+X Pin_5 5 -200 500 150 R 50 50 1 1 P
+X Pin_6 6 -200 400 150 R 50 50 1 1 P
+X Pin_7 7 -200 300 150 R 50 50 1 1 P
+X Pin_8 8 -200 200 150 R 50 50 1 1 P
+X Pin_9 9 -200 100 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Connector_Generic_Conn_02x17_Odd_Even
+#
+DEF Connector_Generic_Conn_02x17_Odd_Even J 0 40 Y N 1 F N
+F0 "J" 50 900 50 H V C CNN
+F1 "Connector_Generic_Conn_02x17_Odd_Even" 50 -900 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*_2x??_*
+$ENDFPLIST
+DRAW
+S -50 -795 0 -805 1 1 6 N
+S -50 -695 0 -705 1 1 6 N
+S -50 -595 0 -605 1 1 6 N
+S -50 -495 0 -505 1 1 6 N
+S -50 -395 0 -405 1 1 6 N
+S -50 -295 0 -305 1 1 6 N
+S -50 -195 0 -205 1 1 6 N
+S -50 -95 0 -105 1 1 6 N
+S -50 5 0 -5 1 1 6 N
+S -50 105 0 95 1 1 6 N
+S -50 205 0 195 1 1 6 N
+S -50 305 0 295 1 1 6 N
+S -50 405 0 395 1 1 6 N
+S -50 505 0 495 1 1 6 N
+S -50 605 0 595 1 1 6 N
+S -50 705 0 695 1 1 6 N
+S -50 805 0 795 1 1 6 N
+S -50 850 150 -850 1 1 10 f
+S 150 -795 100 -805 1 1 6 N
+S 150 -695 100 -705 1 1 6 N
+S 150 -595 100 -605 1 1 6 N
+S 150 -495 100 -505 1 1 6 N
+S 150 -395 100 -405 1 1 6 N
+S 150 -295 100 -305 1 1 6 N
+S 150 -195 100 -205 1 1 6 N
+S 150 -95 100 -105 1 1 6 N
+S 150 5 100 -5 1 1 6 N
+S 150 105 100 95 1 1 6 N
+S 150 205 100 195 1 1 6 N
+S 150 305 100 295 1 1 6 N
+S 150 405 100 395 1 1 6 N
+S 150 505 100 495 1 1 6 N
+S 150 605 100 595 1 1 6 N
+S 150 705 100 695 1 1 6 N
+S 150 805 100 795 1 1 6 N
+X Pin_1 1 -200 800 150 R 50 50 1 1 P
+X Pin_10 10 300 400 150 L 50 50 1 1 P
+X Pin_11 11 -200 300 150 R 50 50 1 1 P
+X Pin_12 12 300 300 150 L 50 50 1 1 P
+X Pin_13 13 -200 200 150 R 50 50 1 1 P
+X Pin_14 14 300 200 150 L 50 50 1 1 P
+X Pin_15 15 -200 100 150 R 50 50 1 1 P
+X Pin_16 16 300 100 150 L 50 50 1 1 P
+X Pin_17 17 -200 0 150 R 50 50 1 1 P
+X Pin_18 18 300 0 150 L 50 50 1 1 P
+X Pin_19 19 -200 -100 150 R 50 50 1 1 P
+X Pin_2 2 300 800 150 L 50 50 1 1 P
+X Pin_20 20 300 -100 150 L 50 50 1 1 P
+X Pin_21 21 -200 -200 150 R 50 50 1 1 P
+X Pin_22 22 300 -200 150 L 50 50 1 1 P
+X Pin_23 23 -200 -300 150 R 50 50 1 1 P
+X Pin_24 24 300 -300 150 L 50 50 1 1 P
+X Pin_25 25 -200 -400 150 R 50 50 1 1 P
+X Pin_26 26 300 -400 150 L 50 50 1 1 P
+X Pin_27 27 -200 -500 150 R 50 50 1 1 P
+X Pin_28 28 300 -500 150 L 50 50 1 1 P
+X Pin_29 29 -200 -600 150 R 50 50 1 1 P
+X Pin_3 3 -200 700 150 R 50 50 1 1 P
+X Pin_30 30 300 -600 150 L 50 50 1 1 P
+X Pin_31 31 -200 -700 150 R 50 50 1 1 P
+X Pin_32 32 300 -700 150 L 50 50 1 1 P
+X Pin_33 33 -200 -800 150 R 50 50 1 1 P
+X Pin_34 34 300 -800 150 L 50 50 1 1 P
+X Pin_4 4 300 700 150 L 50 50 1 1 P
+X Pin_5 5 -200 600 150 R 50 50 1 1 P
+X Pin_6 6 300 600 150 L 50 50 1 1 P
+X Pin_7 7 -200 500 150 R 50 50 1 1 P
+X Pin_8 8 300 500 150 L 50 50 1 1 P
+X Pin_9 9 -200 400 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_C
+#
+DEF Device_C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "Device_C" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ C_*
+$ENDFPLIST
+DRAW
+P 2 0 1 20 -80 -30 80 -30 N
+P 2 0 1 20 -80 30 80 30 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# power_GND
+#
+DEF power_GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "power_GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# power_VCC
+#
+DEF power_VCC #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -150 50 H I C CNN
+F1 "power_VCC" 0 150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+C 0 75 25 0 1 0 N
+P 2 0 1 0 0 0 0 50 N
+X VCC 1 0 0 0 U 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+#End Library

pat80-io-devices/keyboard/hardware/keyboard_controller/keyboard.kicad_pcb

@@ -0,0 +1 @@
+(kicad_pcb (version 4) (host kicad "dummy file") )

pat80-io-devices/keyboard/hardware/keyboard_controller/keyboard.pro

@@ -0,0 +1,248 @@
+update=sab 27 mar 2021 17:56:11 CET
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+[schematic_editor]
+version=1
+PageLayoutDescrFile=
+PlotDirectoryName=
+SubpartIdSeparator=0
+SubpartFirstId=65
+NetFmtName=Pcbnew
+SpiceAjustPassiveValues=0
+LabSize=50
+ERC_TestSimilarLabels=1
+[pcbnew]
+version=1
+PageLayoutDescrFile=
+LastNetListRead=keyboard.net
+CopperLayerCount=2
+BoardThickness=1.6
+AllowMicroVias=0
+AllowBlindVias=0
+RequireCourtyardDefinitions=0
+ProhibitOverlappingCourtyards=1
+MinTrackWidth=0.2
+MinViaDiameter=0.4
+MinViaDrill=0.3
+MinMicroViaDiameter=0.2
+MinMicroViaDrill=0.09999999999999999
+MinHoleToHole=0.25
+TrackWidth1=0.25
+ViaDiameter1=0.8
+ViaDrill1=0.4
+dPairWidth1=0.2
+dPairGap1=0.25
+dPairViaGap1=0.25
+SilkLineWidth=0.12
+SilkTextSizeV=1
+SilkTextSizeH=1
+SilkTextSizeThickness=0.15
+SilkTextItalic=0
+SilkTextUpright=1
+CopperLineWidth=0.2
+CopperTextSizeV=1.5
+CopperTextSizeH=1.5
+CopperTextThickness=0.3
+CopperTextItalic=0
+CopperTextUpright=1
+EdgeCutLineWidth=0.05
+CourtyardLineWidth=0.05
+OthersLineWidth=0.15
+OthersTextSizeV=1
+OthersTextSizeH=1
+OthersTextSizeThickness=0.15
+OthersTextItalic=0
+OthersTextUpright=1
+SolderMaskClearance=0
+SolderMaskMinWidth=0
+SolderPasteClearance=0
+SolderPasteRatio=0
+[pcbnew/Layer.F.Cu]
+Name=F.Cu
+Type=0
+Enabled=1
+[pcbnew/Layer.In1.Cu]
+Name=In1.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In2.Cu]
+Name=In2.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In3.Cu]
+Name=In3.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In4.Cu]
+Name=In4.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In5.Cu]
+Name=In5.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In6.Cu]
+Name=In6.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In7.Cu]
+Name=In7.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In8.Cu]
+Name=In8.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In9.Cu]
+Name=In9.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In10.Cu]
+Name=In10.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In11.Cu]
+Name=In11.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In12.Cu]
+Name=In12.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In13.Cu]
+Name=In13.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In14.Cu]
+Name=In14.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In15.Cu]
+Name=In15.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In16.Cu]
+Name=In16.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In17.Cu]
+Name=In17.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In18.Cu]
+Name=In18.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In19.Cu]
+Name=In19.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In20.Cu]
+Name=In20.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In21.Cu]
+Name=In21.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In22.Cu]
+Name=In22.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In23.Cu]
+Name=In23.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In24.Cu]
+Name=In24.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In25.Cu]
+Name=In25.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In26.Cu]
+Name=In26.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In27.Cu]
+Name=In27.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In28.Cu]
+Name=In28.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In29.Cu]
+Name=In29.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.In30.Cu]
+Name=In30.Cu
+Type=0
+Enabled=0
+[pcbnew/Layer.B.Cu]
+Name=B.Cu
+Type=0
+Enabled=1
+[pcbnew/Layer.B.Adhes]
+Enabled=1
+[pcbnew/Layer.F.Adhes]
+Enabled=1
+[pcbnew/Layer.B.Paste]
+Enabled=1
+[pcbnew/Layer.F.Paste]
+Enabled=1
+[pcbnew/Layer.B.SilkS]
+Enabled=1
+[pcbnew/Layer.F.SilkS]
+Enabled=1
+[pcbnew/Layer.B.Mask]
+Enabled=1
+[pcbnew/Layer.F.Mask]
+Enabled=1
+[pcbnew/Layer.Dwgs.User]
+Enabled=1
+[pcbnew/Layer.Cmts.User]
+Enabled=1
+[pcbnew/Layer.Eco1.User]
+Enabled=1
+[pcbnew/Layer.Eco2.User]
+Enabled=1
+[pcbnew/Layer.Edge.Cuts]
+Enabled=1
+[pcbnew/Layer.Margin]
+Enabled=1
+[pcbnew/Layer.B.CrtYd]
+Enabled=1
+[pcbnew/Layer.F.CrtYd]
+Enabled=1
+[pcbnew/Layer.B.Fab]
+Enabled=1
+[pcbnew/Layer.F.Fab]
+Enabled=1
+[pcbnew/Layer.Rescue]
+Enabled=1
+[pcbnew/Netclasses]
+[pcbnew/Netclasses/Default]
+Name=Default
+Clearance=0.2
+TrackWidth=0.25
+ViaDiameter=0.8
+ViaDrill=0.4
+uViaDiameter=0.3
+uViaDrill=0.1
+dPairWidth=0.2
+dPairGap=0.25
+dPairViaGap=0.25

pat80-io-devices/keyboard/hardware/keyboard_controller/keyboard.sch

@@ -0,0 +1,755 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+Wire Wire Line
+	4350 3800 5800 3800
+Connection ~ 4350 3800
+Text Label 4900 4800 0    50   ~ 0
+ROW7
+Text Label 4900 4700 0    50   ~ 0
+ROW6
+Text Label 4900 4600 0    50   ~ 0
+ROW5
+Text Label 4900 4500 0    50   ~ 0
+ROW4
+Text Label 4900 4400 0    50   ~ 0
+ROW3
+Text Label 4900 4300 0    50   ~ 0
+ROW2
+Text Label 4900 4200 0    50   ~ 0
+ROW1
+Text Label 4900 4100 0    50   ~ 0
+ROW0
+Text Label 6850 4300 0    50   ~ 0
+COL7
+Text Label 6850 4200 0    50   ~ 0
+COL6
+Text Label 6850 4100 0    50   ~ 0
+COL5
+Text Label 6850 4000 0    50   ~ 0
+COL4
+Text Label 6850 3900 0    50   ~ 0
+COL3
+Text Label 6850 3800 0    50   ~ 0
+COL2
+Text Label 6850 3700 0    50   ~ 0
+COL1
+Text Label 6850 3600 0    50   ~ 0
+COL0
+Wire Wire Line
+	4850 4800 5100 4800
+Wire Wire Line
+	4850 4700 5100 4700
+Wire Wire Line
+	4850 4600 5100 4600
+Wire Wire Line
+	4850 4500 5100 4500
+Wire Wire Line
+	4850 4400 5100 4400
+Wire Wire Line
+	4850 4300 5100 4300
+Wire Wire Line
+	4850 4200 5100 4200
+Wire Wire Line
+	4850 4100 5100 4100
+Entry Wire Line
+	5100 4800 5200 4900
+Entry Wire Line
+	5100 4700 5200 4800
+Entry Wire Line
+	5100 4600 5200 4700
+Entry Wire Line
+	5100 4500 5200 4600
+Entry Wire Line
+	5100 4400 5200 4500
+Entry Wire Line
+	5100 4300 5200 4400
+Entry Wire Line
+	5100 4200 5200 4300
+Entry Wire Line
+	5100 4100 5200 4200
+Wire Wire Line
+	6800 3600 7150 3600
+Wire Wire Line
+	6800 3700 7150 3700
+Wire Wire Line
+	6800 3800 7150 3800
+Wire Wire Line
+	6800 3900 7150 3900
+Wire Wire Line
+	6800 4000 7150 4000
+Wire Wire Line
+	7150 4100 6800 4100
+Wire Wire Line
+	6800 4200 7150 4200
+Wire Wire Line
+	7150 4300 6800 4300
+Entry Wire Line
+	7150 4300 7250 4400
+Entry Wire Line
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+The PAT80 keyboard is seen from the computer as a readonly block of 64 bytes of memory\nin the I/O space mapped to the first 3 of the 5 I/O address available for every single I/O device.\n\nThe keyboard controller is a board plugged on the I/O backplane and connected to the matrix board with a\n34-pin female-to-female flat ribbon cable (e.g. the ones used by IBM PC floppy disk drives)\n\nThe joystick port is Atari-style: partially C64 and MSX compatible (supports a single button and no analog paddle)
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+Text Notes 7350 7550 0    118  ~ 0
+Pat80 Keyboard and Joystick Controller
+$EndSCHEMATC

pat80-io-devices/keyboard/hardware/keyboard_controller/keyboard.sch-bak

@@ -0,0 +1,755 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
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+$EndSCHEMATC

pat80-io-devices/keyboard/hardware/keyboard_controller/sym-lib-table

@@ -0,0 +1,3 @@
+(sym_lib_table
+  (lib (name pat80)(type Legacy)(uri /home/danieleverducci/git/pato-z80-home-computer/kicad-symbols/pat80.lib)(options "")(descr ""))
+)

pat80-io-devices/parallel-terminal/arduino/arduino_terminal/arduino_terminal.ino

@@ -1,5 +1,24 @@
 /**
  * Terminal interface.
+ *
+ * * @language: AVR ASM
+ *
+ * This file is part of Pat80 IO Devices.
+ *
+ * Pat80 IO Devices is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 IO Devices is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 IO Devices.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
  * This sketch allow an Arduino to be used as a terminal to log into Pat80.
  * The Arduino is connected to the Pat80 I/O bus and to the terminal computer via USB.
  * The Python Terminal Monitor or the Arduino IDE serial monitor is used to send

pat80-io-devices/parallel-terminal/python/terminal_emulator.py

@@ -4,6 +4,23 @@
 """ @package docstring
 ARDUINO PARALLEL TERMINAL EMULATOR
 
+
+ * This file is part of Pat80 IO Devices.
+ *
+ * Pat80 IO Devices is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 IO Devices is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 IO Devices.  If not, see <http://www.gnu.org/licenses/>.
+
+
 USAGE:
 Connect the arduino to a Pat80 I/O port.
 Flash /arduino/arduino_terminal firmware into the Arduino.

pat80-io-devices/uart/hardware/LICENSE.md

@@ -0,0 +1,18 @@
+# UART
+This folder contains the Pat80 UART decoding logic, schematics and PCB layout.
+
+## License
+All files contained in this folder are part of Pat80 Blueprints.
+
+Pat80 Blueprints is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Pat80 Blueprints is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTYwithout even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Pat80 Blueprints.  If not, see <http://www.gnu.org/licenses/>.

pat80-io-devices/uart/hardware/uart-decoding-logic.circ

@@ -0,0 +1,336 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project source="2.7.1" version="1.0">
+  This file is intended to be loaded by Logisim (http://www.cburch.com/logisim/).
+
+  <lib desc="#Wiring" name="0">
+    <tool name="Splitter">
+      <a name="fanout" val="4"/>
+      <a name="incoming" val="4"/>
+    </tool>
+  </lib>
+  <lib desc="#Gates" name="1">
+    <tool name="AND Gate">
+      <a name="facing" val="west"/>
+      <a name="size" val="30"/>
+      <a name="inputs" val="2"/>
+    </tool>
+  </lib>
+  <lib desc="#Plexers" name="2"/>
+  <lib desc="#Arithmetic" name="3"/>
+  <lib desc="#Memory" name="4">
+    <tool name="Counter">
+      <a name="width" val="4"/>
+      <a name="max" val="0xf"/>
+      <a name="trigger" val="falling"/>
+      <a name="label" val="Clock demultiplier"/>
+    </tool>
+    <tool name="Shift Register">
+      <a name="parallel" val="false"/>
+    </tool>
+  </lib>
+  <lib desc="#I/O" name="5"/>
+  <lib desc="#Base" name="6">
+    <tool name="Text Tool">
+      <a name="text" val=""/>
+      <a name="font" val="SansSerif plain 12"/>
+      <a name="halign" val="center"/>
+      <a name="valign" val="base"/>
+    </tool>
+  </lib>
+  <main name="main"/>
+  <options>
+    <a name="gateUndefined" val="ignore"/>
+    <a name="simlimit" val="1000"/>
+    <a name="simrand" val="0"/>
+  </options>
+  <mappings>
+    <tool lib="6" map="Button2" name="Menu Tool"/>
+    <tool lib="6" map="Button3" name="Menu Tool"/>
+    <tool lib="6" map="Ctrl Button1" name="Menu Tool"/>
+  </mappings>
+  <toolbar>
+    <tool lib="6" name="Poke Tool"/>
+    <tool lib="6" name="Edit Tool"/>
+    <tool lib="6" name="Text Tool">
+      <a name="text" val=""/>
+      <a name="font" val="SansSerif plain 12"/>
+      <a name="halign" val="center"/>
+      <a name="valign" val="base"/>
+    </tool>
+    <sep/>
+    <tool lib="0" name="Pin">
+      <a name="tristate" val="false"/>
+    </tool>
+    <tool lib="0" name="Pin">
+      <a name="facing" val="west"/>
+      <a name="output" val="true"/>
+      <a name="labelloc" val="east"/>
+    </tool>
+    <tool lib="1" name="NOT Gate"/>
+    <tool lib="1" name="AND Gate"/>
+    <tool lib="1" name="OR Gate"/>
+  </toolbar>
+  <circuit name="main">
+    <a name="circuit" val="main"/>
+    <a name="clabel" val=""/>
+    <a name="clabelup" val="east"/>
+    <a name="clabelfont" val="SansSerif plain 12"/>
+    <wire from="(400,430)" to="(400,500)"/>
+    <wire from="(610,290)" to="(660,290)"/>
+    <wire from="(350,370)" to="(350,500)"/>
+    <wire from="(210,490)" to="(210,500)"/>
+    <wire from="(880,30)" to="(880,350)"/>
+    <wire from="(290,370)" to="(290,380)"/>
+    <wire from="(420,520)" to="(540,520)"/>
+    <wire from="(330,370)" to="(330,380)"/>
+    <wire from="(370,370)" to="(370,380)"/>
+    <wire from="(870,430)" to="(870,460)"/>
+    <wire from="(390,100)" to="(390,180)"/>
+    <wire from="(420,180)" to="(420,210)"/>
+    <wire from="(440,80)" to="(440,110)"/>
+    <wire from="(410,370)" to="(410,400)"/>
+    <wire from="(180,410)" to="(180,500)"/>
+    <wire from="(250,380)" to="(290,380)"/>
+    <wire from="(200,30)" to="(880,30)"/>
+    <wire from="(280,90)" to="(320,90)"/>
+    <wire from="(290,180)" to="(330,180)"/>
+    <wire from="(400,170)" to="(440,170)"/>
+    <wire from="(350,100)" to="(350,200)"/>
+    <wire from="(490,300)" to="(580,300)"/>
+    <wire from="(860,410)" to="(880,410)"/>
+    <wire from="(410,110)" to="(440,110)"/>
+    <wire from="(520,140)" to="(550,140)"/>
+    <wire from="(380,400)" to="(410,400)"/>
+    <wire from="(320,190)" to="(340,190)"/>
+    <wire from="(300,530)" to="(320,530)"/>
+    <wire from="(410,480)" to="(430,480)"/>
+    <wire from="(800,420)" to="(830,420)"/>
+    <wire from="(150,470)" to="(150,520)"/>
+    <wire from="(490,90)" to="(500,90)"/>
+    <wire from="(210,490)" to="(220,490)"/>
+    <wire from="(870,430)" to="(880,430)"/>
+    <wire from="(440,80)" to="(500,80)"/>
+    <wire from="(200,490)" to="(200,500)"/>
+    <wire from="(240,490)" to="(240,500)"/>
+    <wire from="(270,520)" to="(320,520)"/>
+    <wire from="(260,390)" to="(310,390)"/>
+    <wire from="(790,390)" to="(790,460)"/>
+    <wire from="(410,100)" to="(410,110)"/>
+    <wire from="(290,260)" to="(290,270)"/>
+    <wire from="(200,150)" to="(200,300)"/>
+    <wire from="(220,470)" to="(220,490)"/>
+    <wire from="(530,100)" to="(530,120)"/>
+    <wire from="(390,410)" to="(430,410)"/>
+    <wire from="(380,100)" to="(380,190)"/>
+    <wire from="(340,100)" to="(340,190)"/>
+    <wire from="(330,410)" to="(330,500)"/>
+    <wire from="(810,370)" to="(830,370)"/>
+    <wire from="(390,180)" to="(420,180)"/>
+    <wire from="(660,180)" to="(660,290)"/>
+    <wire from="(400,430)" to="(430,430)"/>
+    <wire from="(510,100)" to="(510,260)"/>
+    <wire from="(440,170)" to="(440,210)"/>
+    <wire from="(330,380)" to="(340,380)"/>
+    <wire from="(200,150)" to="(280,150)"/>
+    <wire from="(200,490)" to="(210,490)"/>
+    <wire from="(280,90)" to="(280,150)"/>
+    <wire from="(530,120)" to="(610,120)"/>
+    <wire from="(860,430)" to="(870,430)"/>
+    <wire from="(790,460)" to="(870,460)"/>
+    <wire from="(340,380)" to="(340,500)"/>
+    <wire from="(190,490)" to="(190,500)"/>
+    <wire from="(230,490)" to="(230,500)"/>
+    <wire from="(200,80)" to="(320,80)"/>
+    <wire from="(340,200)" to="(340,210)"/>
+    <wire from="(380,200)" to="(380,210)"/>
+    <wire from="(310,370)" to="(310,390)"/>
+    <wire from="(390,370)" to="(390,390)"/>
+    <wire from="(880,380)" to="(880,410)"/>
+    <wire from="(290,180)" to="(290,260)"/>
+    <wire from="(330,100)" to="(330,180)"/>
+    <wire from="(200,300)" to="(490,300)"/>
+    <wire from="(370,100)" to="(370,200)"/>
+    <wire from="(830,330)" to="(830,370)"/>
+    <wire from="(640,130)" to="(660,130)"/>
+    <wire from="(150,570)" to="(300,570)"/>
+    <wire from="(380,190)" to="(400,190)"/>
+    <wire from="(580,140)" to="(610,140)"/>
+    <wire from="(260,390)" to="(260,500)"/>
+    <wire from="(150,530)" to="(150,570)"/>
+    <wire from="(430,370)" to="(430,410)"/>
+    <wire from="(150,520)" to="(170,520)"/>
+    <wire from="(520,100)" to="(520,140)"/>
+    <wire from="(610,310)" to="(810,310)"/>
+    <wire from="(340,200)" to="(350,200)"/>
+    <wire from="(360,380)" to="(370,380)"/>
+    <wire from="(410,110)" to="(410,160)"/>
+    <wire from="(460,160)" to="(460,210)"/>
+    <wire from="(190,490)" to="(200,490)"/>
+    <wire from="(230,490)" to="(240,490)"/>
+    <wire from="(250,380)" to="(250,500)"/>
+    <wire from="(400,100)" to="(400,170)"/>
+    <wire from="(140,80)" to="(200,80)"/>
+    <wire from="(410,160)" to="(460,160)"/>
+    <wire from="(220,490)" to="(220,500)"/>
+    <wire from="(320,190)" to="(320,210)"/>
+    <wire from="(400,190)" to="(400,210)"/>
+    <wire from="(410,480)" to="(410,500)"/>
+    <wire from="(800,390)" to="(800,420)"/>
+    <wire from="(490,90)" to="(490,300)"/>
+    <wire from="(390,410)" to="(390,500)"/>
+    <wire from="(660,130)" to="(660,150)"/>
+    <wire from="(290,260)" to="(510,260)"/>
+    <wire from="(380,400)" to="(380,500)"/>
+    <wire from="(180,410)" to="(330,410)"/>
+    <wire from="(300,570)" to="(640,570)"/>
+    <wire from="(370,390)" to="(390,390)"/>
+    <wire from="(180,370)" to="(180,410)"/>
+    <wire from="(360,100)" to="(360,210)"/>
+    <wire from="(370,390)" to="(370,500)"/>
+    <wire from="(300,530)" to="(300,570)"/>
+    <wire from="(150,530)" to="(170,530)"/>
+    <wire from="(200,30)" to="(200,80)"/>
+    <wire from="(370,200)" to="(380,200)"/>
+    <wire from="(220,490)" to="(230,490)"/>
+    <wire from="(360,380)" to="(360,500)"/>
+    <comp lib="0" loc="(410,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(290,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="1" loc="(880,380)" name="NOT Gate">
+      <a name="facing" val="south"/>
+    </comp>
+    <comp lib="4" loc="(320,80)" name="Shift Register"/>
+    <comp lib="1" loc="(660,180)" name="NOT Gate">
+      <a name="facing" val="south"/>
+    </comp>
+    <comp lib="0" loc="(880,430)" name="Clock">
+      <a name="facing" val="west"/>
+    </comp>
+    <comp lib="0" loc="(180,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+      <a name="label" val="Wr"/>
+      <a name="labelloc" val="north"/>
+    </comp>
+    <comp lib="0" loc="(150,470)" name="Power"/>
+    <comp lib="0" loc="(350,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(400,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(430,430)" name="Ground"/>
+    <comp lib="0" loc="(340,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(440,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="4" loc="(170,520)" name="Shift Register"/>
+    <comp lib="0" loc="(360,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(420,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(310,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="4" loc="(320,520)" name="Shift Register"/>
+    <comp lib="0" loc="(330,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(390,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(370,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="4" loc="(500,80)" name="Shift Register"/>
+    <comp lib="0" loc="(430,370)" name="Pin">
+      <a name="facing" val="south"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(140,80)" name="Pin">
+      <a name="tristate" val="false"/>
+      <a name="label" val="Rx"/>
+    </comp>
+    <comp lib="1" loc="(580,140)" name="NOT Gate"/>
+    <comp lib="1" loc="(640,130)" name="AND Gate">
+      <a name="size" val="30"/>
+      <a name="inputs" val="2"/>
+    </comp>
+    <comp lib="0" loc="(540,520)" name="Pin">
+      <a name="facing" val="west"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+      <a name="label" val="Tx"/>
+      <a name="labelloc" val="east"/>
+    </comp>
+    <comp lib="1" loc="(830,420)" name="AND Gate">
+      <a name="facing" val="west"/>
+      <a name="size" val="30"/>
+      <a name="inputs" val="2"/>
+    </comp>
+    <comp lib="0" loc="(320,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="1" loc="(580,300)" name="AND Gate">
+      <a name="facing" val="west"/>
+      <a name="size" val="30"/>
+      <a name="inputs" val="2"/>
+    </comp>
+    <comp lib="0" loc="(220,470)" name="Power"/>
+    <comp lib="4" loc="(810,370)" name="Counter">
+      <a name="width" val="4"/>
+      <a name="max" val="0xf"/>
+      <a name="trigger" val="falling"/>
+      <a name="label" val="Clock demultiplier"/>
+      <a name="labelfont" val="SansSerif plain 10"/>
+    </comp>
+    <comp lib="0" loc="(380,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(460,210)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="output" val="true"/>
+      <a name="tristate" val="false"/>
+    </comp>
+    <comp lib="0" loc="(290,270)" name="Pin">
+      <a name="facing" val="north"/>
+      <a name="tristate" val="false"/>
+      <a name="label" val="Clear"/>
+    </comp>
+    <comp lib="0" loc="(430,480)" name="Power"/>
+    <comp lib="0" loc="(830,330)" name="Splitter">
+      <a name="facing" val="west"/>
+      <a name="fanout" val="4"/>
+      <a name="incoming" val="4"/>
+      <a name="appear" val="right"/>
+    </comp>
+  </circuit>
+</project>

pat80-io-devices/uart/hardware/wip_delay.circ

@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project source="2.7.1" version="1.0">
+  This file is intended to be loaded by Logisim (http://www.cburch.com/logisim/).
+
+  <lib desc="#Wiring" name="0"/>
+  <lib desc="#Gates" name="1">
+    <tool name="NAND Gate">
+      <a name="size" val="30"/>
+      <a name="inputs" val="2"/>
+    </tool>
+  </lib>
+  <lib desc="#Plexers" name="2"/>
+  <lib desc="#Arithmetic" name="3"/>
+  <lib desc="#Memory" name="4"/>
+  <lib desc="#I/O" name="5"/>
+  <lib desc="#Base" name="6">
+    <tool name="Text Tool">
+      <a name="text" val=""/>
+      <a name="font" val="SansSerif plain 12"/>
+      <a name="halign" val="center"/>
+      <a name="valign" val="base"/>
+    </tool>
+  </lib>
+  <main name="main"/>
+  <options>
+    <a name="gateUndefined" val="ignore"/>
+    <a name="simlimit" val="1000"/>
+    <a name="simrand" val="0"/>
+  </options>
+  <mappings>
+    <tool lib="6" map="Button2" name="Menu Tool"/>
+    <tool lib="6" map="Button3" name="Menu Tool"/>
+    <tool lib="6" map="Ctrl Button1" name="Menu Tool"/>
+  </mappings>
+  <toolbar>
+    <tool lib="6" name="Poke Tool"/>
+    <tool lib="6" name="Edit Tool"/>
+    <tool lib="6" name="Text Tool">
+      <a name="text" val=""/>
+      <a name="font" val="SansSerif plain 12"/>
+      <a name="halign" val="center"/>
+      <a name="valign" val="base"/>
+    </tool>
+    <sep/>
+    <tool lib="0" name="Pin">
+      <a name="tristate" val="false"/>
+    </tool>
+    <tool lib="0" name="Pin">
+      <a name="facing" val="west"/>
+      <a name="output" val="true"/>
+      <a name="labelloc" val="east"/>
+    </tool>
+    <tool lib="1" name="NOT Gate"/>
+    <tool lib="1" name="AND Gate"/>
+    <tool lib="1" name="OR Gate"/>
+  </toolbar>
+  <circuit name="main">
+    <a name="circuit" val="main"/>
+    <a name="clabel" val=""/>
+    <a name="clabelup" val="east"/>
+    <a name="clabelfont" val="SansSerif plain 12"/>
+    <wire from="(180,160)" to="(340,160)"/>
+    <wire from="(160,210)" to="(170,210)"/>
+    <wire from="(180,150)" to="(180,160)"/>
+    <wire from="(190,130)" to="(230,130)"/>
+    <wire from="(260,140)" to="(260,250)"/>
+    <wire from="(340,130)" to="(340,160)"/>
+    <wire from="(260,140)" to="(300,140)"/>
+    <wire from="(250,120)" to="(300,120)"/>
+    <wire from="(170,150)" to="(170,210)"/>
+    <wire from="(160,250)" to="(260,250)"/>
+    <comp lib="0" loc="(160,210)" name="Clock"/>
+    <comp lib="0" loc="(160,250)" name="Pin">
+      <a name="tristate" val="false"/>
+      <a name="label" val="Rx"/>
+    </comp>
+    <comp lib="0" loc="(230,130)" name="Splitter">
+      <a name="fanout" val="8"/>
+      <a name="incoming" val="8"/>
+    </comp>
+    <comp lib="1" loc="(340,130)" name="NAND Gate">
+      <a name="size" val="30"/>
+      <a name="inputs" val="2"/>
+    </comp>
+    <comp lib="4" loc="(190,130)" name="Counter"/>
+  </circuit>
+</project>

prototiping-with-arduino/SN76489-test/SN76489-test.ino

@@ -1,4 +1,21 @@
 /**
+ *
+ * This file is part of Pat80 Utils.
+ *
+ * Pat80 Utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 Utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 Utils.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
  * SN76489 sound chip test
  *
  * DATA BUS IS: 2, 3, 4, 5, 6, 7, 8, 9 (NOTE: 2 is D0, but D0 is the MSB)

prototiping-with-arduino/composite-pal-adapter-test/composite-pal-adapter-test.ino

@@ -0,0 +1,57 @@
+/**
+ * This file is part of Pat80 IO Devices.
+ *
+ * Pat80 IO Devices is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 IO Devices is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 IO Devices.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Composite pal adapter test.
+ * This sketch makes an Arduino send test data to tha Pat80 composite video pal adapter.
+ * Connect the video adapter directly to Arduino
+ */
+
+const byte CLK = 11;   // output active low
+const byte RS = 12;   // output low = DATA register, high = COMMAND register
+const byte BUSY = 13;   // Input, Active low
+// DATA BUS (Output, active high): 3, 4, 5, 6, 7, 8, 9, 10;
+
+void setup() {
+  DDRD = DDRD | B11111000; // Port D (arduino pins 3 to 7) is output. In or to preserve serial pins and interrupt pin
+  DDRB = B00000111; // Port B (0,1,2) = pins 8,9,10 output
+  pinMode(CLK, OUTPUT);
+  pinMode(RS, OUTPUT);
+  pinMode(BUSY, INPUT);
+
+  digitalWrite(CLK, HIGH);  // Inactive clock
+}
+
+void loop() {
+  delay(1000);
+  send();
+}
+
+void send() {
+    // Random char
+    char c = random(32, 126);
+    // Wait for BUSY to become inactive (HIGH)
+    //while(digitalRead(BUSY) == LOW) {}
+
+    // Split byte to two parts and write to ports
+    PORTD = c << 3;
+    PORTB = c >> 5;
+
+    // Clock pulse
+    digitalWrite(CLK, LOW);
+    delay(100);
+    digitalWrite(CLK, HIGH);
+}

prototiping-with-arduino/eeprom_programmer/eeprom_programmer/eeprom_programmer.ino

@@ -1,4 +1,23 @@
 /* ************** EEPROM PROGRAMMER ******************
+ * This file is part of Pat80 Utils.
+ *
+ * Pat80 Utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 Utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 Utils.  If not, see <http://www.gnu.org/licenses/>.
+
+
+NOTE: This is not working and I'm not sure if it will be fixed or removed,
+as I'm actually using an USB programmer.
+
 
 HARDWARE:
 

prototiping-with-arduino/hd44780_debugger/hd44780_debugger.ino

@@ -1,4 +1,23 @@
-/* HD44780 Character display debugger */
+/*
+ * This file is part of Pat80 Utils.
+ *
+ * Pat80 Utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 Utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 Utils.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * HD44780 Character display debugger
+ * Used to intercept data sent from Pat80 to character display
+ */
 
 #define EN 2
 const byte DATA_BUS[] = {10, 9, 8, 7, 6, 5, 4, 3};

prototiping-with-arduino/pal_adapter/pal_adapter.ino

@@ -1,67 +0,0 @@
-#include <TVout.h>
-#include <TVoutfonts/fontALL.h>
-TVout TV;
-
-// Pins
-#define RS 5
-#define EN 4
-const byte DATA [] = {A5, A4, A3, A2, 13, 12, 11, 10};
-
-
-bool clkState = false;
-
-void setup() {
-  Serial.begin(57600);
-  Serial.println("PAL debugger");
-  
-  // Init comm pins
-  pinMode(EN, INPUT);
-  pinMode(RS, INPUT);
-  for(int pin = 0; pin < 8; pin++) {
-    pinMode(DATA[pin], INPUT);
-  }
-
-  // Init VGA
-  TV.begin(PAL,120,96);
-  TV.select_font(font4x6);
-
-  TV.println("TV init");
-}
-
-void loop() {
-  bool newClkState = digitalRead(EN);
-  if (newClkState == false && clkState == true) {
-    // Falling edge: read data from bus
-    onClk();
-  }
-  clkState = newClkState;
-}
-
-void onClk() {
-  bool isCommand = digitalRead(RS);
-  if (isCommand) {
-    //onCommandReceived();
-    onDataReceived();
-  } else {
-    onDataReceived();
-  }
-}
-
-void onCommandReceived() {
-  
-}
-
-void onDataReceived() {
-  char ch = readByte();
-  TV.print(ch);
-  Serial.println(ch);
-}
-
-byte readByte() {
-  unsigned int data = 0;
-  for(int pin=0; pin < 8; pin++) {
-    byte b = digitalRead(DATA[pin]) ? 1 : 0;
-    data = (data << 1) + b;   // Shifta di 1 e aggiunge il bit corrente. Serve per ricostruire il numero da binario
-  }
-  return data;
-}

prototiping-with-arduino/ps2-keyb-controller-test/ps2-keyb-controller-test.ino

@@ -0,0 +1,54 @@
+/*
+ * This file is part of Pat80 Utils.
+ *
+ * Pat80 Utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 Utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 Utils.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * PS/2 Keyboard controller debugger
+ * Used to intercept data decoded from Pat80 PS/2 keyboard adapter
+ */
+
+#define EN 2
+const byte DATA_BUS[] = {10, 9, 8, 7, 6, 5, 4, 3};
+
+void setup() {
+  pinMode(EN, INPUT);
+  for(int pin=0; pin < 8; pin++) {
+    pinMode(DATA_BUS[pin], INPUT);
+  }
+
+  Serial.begin(57600);
+  Serial.println("PS/2 keyboard controller debugger");
+  Serial.println("DATA BUS    HEX     EN");
+
+  attachInterrupt(digitalPinToInterrupt(EN), onClk, FALLING);
+}
+
+void loop() {}
+
+void onClk() {
+  unsigned int data = 0;
+    for(int pin=0; pin < 8; pin++) {
+      byte b = digitalRead(DATA_BUS[pin]) ? 1 : 0;
+      Serial.print(b);
+      data = (data << 1) + b;   // Shifta di 1 e aggiunge il bit corrente. Serve per ricostruire il numero da binario
+    }
+
+    char output[50] = {};
+    sprintf(output, "    0x%02x    %c",
+      data,
+      digitalRead(EN) ? 'D' : 'I'
+    );
+    Serial.println(output);
+}

prototiping-with-arduino/sdcard-test/sdcard-test.ino

@@ -1,4 +1,21 @@
 /**
+ *
+ * This file is part of Pat80 Utils.
+ *
+ * Pat80 Utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 Utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 Utils.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
  * SPI SD-Card test sketch
  * Reads the first 128 bytes from sdcard and prints it out as ascii characters in serial monitor at 9200 baud
  *

prototiping-with-arduino/z80_debugger/z80_debugger.ino

@@ -1,4 +1,20 @@
 /* ************** DEBUGGER Zilog Z80 ******************
+ *
+ * This file is part of Pat80 Utils.
+ *
+ * Pat80 Utils is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Pat80 Utils is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY * without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Pat80 Utils.  If not, see <http://www.gnu.org/licenses/>.
+
 
 HARDWARE: