penguin86/pato-z80-home-computer
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WIP newline and end-of-screen shift

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Daniele Verducci su MatissePenguin
2021-02-15 22:54:54 +01:00
parent d3604ca3ab
commit e34cfef259
3 changed files with 57 additions and 16 deletions
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11
pat80-io-devices/composite-pal-adapter/software/avr-assembly/main.asm
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@@ -111,25 +111,22 @@ main:
; test draw character routine
call cursor_pos_home
ldi r18, 0x41
dctest:
ldi r18, 0x21
draw_chars:
mov HIGH_ACCUM, r18
call draw_char
inc r18
cpi r18, 0x7E
cpi r18, 0x5B
brne dc_continue
ldi r18, 0x21
ldi r18, 0x41
;call draw_carriage_return
dc_continue:
; wait
ser r19
dc_wait_loop_1:
ser r20
dc_wait_loop_2:
nop
nop
nop
nop
dec r20
brne dc_wait_loop_2
dec r19