MiniMemoryTester/src/strings.s

48 lines
556 B
ArmAsm

* GoXY
* PrintStringsX
* PrintString
GoXY stx $24
sty $25
jsr VTAB
rts
PrintStringsX stx _printstringsx_horiz ; IGNORED! 4 NOW!
sta $0
sty $1
:loop lda $0 ; slower, but allows API reuse
ldy $1
jsr PrintString ; y is last val
iny
lda ($0),y
beq :done
tya ; not done so add strlen to source ptr
clc
adc $0
sta $0
bcc :nocarry
inc $1
:nocarry bra :loop
:done rts
_printstringsx_horiz db 00
* PrintString (A=Low Byte, Y=High Byte)
PrintString sta $0
sty $1
ldy #0
:loop lda ($0),y
beq :done
jsr COUT
iny
bra :loop
:done rts