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@mach-kernel
Created Feb 19, 2018
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up cpy #0
beq ping
dey
jmp finkey
down cpy #22
beq ping
iny
jmp finkey
left cpx #0
beq ping
dex
jmp finkey
right cpx #39
beq ping
jmp *+2
colinc cpx #39
beq :rolcol
inx
jmp finkey
:rolcol ldx #0
jmp down
return ldx #0
jmp down
backspace lda #$A0
cpx #0
beq :contbs
dex
:contbs jsr drawchar
jmp finkey
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