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Scrambled image due to inverted bit order in every of the 52 line byte chunks

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Daniele Verducci su MatissePenguin 2021-01-08 10:08:03 +01:00
parent a86dbed7f7
commit 62e98d7fe4
3 changed files with 1333 additions and 1332 deletions
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2637
pat80-io-devices/composite-pal-adapter/software/avr-assembly/cat.asm
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File diff suppressed because it is too large Load Diff

9
pat80-io-devices/composite-pal-adapter/software/avr-assembly/cat2.asm
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@ -1,8 +1,7 @@
.org 0x1000
.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
.db 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0
.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
.db 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0
CAT_IMAGE: .db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.db 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 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, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
.db 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0
.db 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,

19
pat80-io-devices/composite-pal-adapter/software/avr-assembly/main.asm
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@ -4,7 +4,6 @@
; This also displays byte's MSB pixel "for free", as the video pin is PD7 (last bit of PORTD).
.include "atmega1284definition.asm"
.include "cat2.asm"
; define constant
.equ SYNC_PIN = PC0 ; Sync pin (pin 22)
@ -34,11 +33,12 @@ main:
;*** Load data into ram ***
; Set X to 0x0100
ldi r27, 0x01
clr r26
ldi r27, high(FRAMEBUFFER<<1)
ldi r26, low(FRAMEBUFFER<<1)
; Set Z to 0x1000 (cat image)
ldi r31, 0x10
clr r30
ldi r31, high(CAT_IMAGE<<1)
ldi r30, low(CAT_IMAGE<<1)
load_mem_loop:
lpm r17, Z+
@ -82,7 +82,7 @@ v_refresh_loop:
; debug
; ***************** DRAW FIRST LINE *********************
; **** start line sync: 4uS, 96 cycles @ 24Mhz
cbi PORTD, VIDEO_PIN ; video pin goes low before sync ; 2 cycles
cbi PORTC, SYNC_PIN ; sync goes low (0v) ; 2 cycle
@ -107,7 +107,7 @@ v_refresh_loop:
; ***************** DRAW SECOND LINE *********************
; **** start line sync: 4uS, 96 cycles @ 24Mhz
cbi PORTD, VIDEO_PIN ; video pin goes low before sync ; 2 cycles
cbi PORTC, SYNC_PIN ; sync goes low (0v) ; 2 cycle
@ -1506,4 +1506,7 @@ draw_line:
lsl r19 ; 1 cycle
out PORTD, r19 ; 1 cycle
ret
ret
.include "cat.asm"