mirror of
https://github.com/jborza/emu6502.git
synced 2024-06-07 16:16:37 +00:00
32 lines
371 B
NASM
32 lines
371 B
NASM
start:
|
|
;number of loops to perform
|
|
LDA #$10
|
|
STA $A0
|
|
|
|
|
|
outer:
|
|
;number of bytes to color in a loop
|
|
LDY #$03
|
|
;LDX #$00
|
|
|
|
loop:
|
|
;LDA #$01
|
|
STA $0200, X
|
|
INX
|
|
DEY
|
|
BNE loop
|
|
|
|
;outer loop handling
|
|
DEC $A0
|
|
LDA $A0
|
|
BNE outer
|
|
|
|
;overwrite the address for drawing and loop once again
|
|
|
|
LDA #$30
|
|
ADC $0607 ;add 3*16 for the next color strip
|
|
STA $0607
|
|
LDA #$90
|
|
CMP $0607
|
|
;LDA $0607
|
|
BNE start |