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; 2d starfield
; Submitted by Anonymous
i:ldx #$7
g:lda $fe
and #3
adc #1
sta $0,x
lda $fe
and #$1f
sta $20,x
dex
bpl g
f:
lda #$ff
sta $10
delay:
nop
dec $10
bne delay
lda #$00
sta $80
lda #$02
sta $81
ldx #$7
l:lda $20,x
pha
clc
sbc $00,x
and #$1f
sta $20,x
lda $20,x
tay
lda #1
sta ($80),y
pla
tay
lda #0
sta ($80),y
lda $80
clc
adc #$80
bne n
inc $81
n:sta $80
dex
bpl l
jmp f
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