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Characters test prior to memory map refactor

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Daniele Verducci su MatissePenguin 2021-02-12 13:03:43 +01:00
parent 8ed06f78e4
commit 9872968720
2 changed files with 4 additions and 4 deletions
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2
pat80-io-devices/composite-pal-adapter/software/avr-assembly/main.asm
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@ -158,7 +158,7 @@ main:
; Timer setup completed. ; Timer setup completed.
; Wait for data (it never exits) ; Wait for data (it never exits)
jmp comm_init ; jmp comm_init
forever: forever:
jmp forever jmp forever

6
pat80-io-devices/composite-pal-adapter/software/avr-assembly/video_generator.asm
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@ -4,8 +4,8 @@
; ******************************************* ; *******************************************
; This module generates a Composite PAL monochrome signal with a resolution ; This module generates a Composite PAL monochrome signal with a resolution
; of 416x304 pixels (= 52x38 characters). The signal is generated using 16-bit ; of 416x304 pixels of which only 376x232 pizels are visible (= 47x29 characters).
; Timer1 and interrupts. ; The signal is generated using 16-bit Timer1 and interrupts.
; How does it work: ; How does it work:
@ -51,7 +51,7 @@ draw_picture:
; save X register ; save X register
push XH push XH
push XL push XL
; set X register to framebuffer start 0x0100 ; set X register to framebuffer start 0x0100
; (set it a byte before, because it will be incremented at first) ; (set it a byte before, because it will be incremented at first)
clr r27 clr r27