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.export _main
.include "atari.inc"
sptr = FR0
scount = FR0+2
.ifndef start_addr
start_addr = $4000
.endif
.ifndef RAW
.org start_addr - 6
.word $ffff
.word start_addr
.word end_addr - 1
.endif
.org start_addr
_main:
ldx #0
stx COLCRS
inx
stx CRSINH
lda #<str1
ldx #>str1
jsr printstr
lda #' '
jsr printa
lda #<str2
ldx #>str2
jsr printstr
lda #'.'
jsr printa
cycle:
lda RTCLOK+2
and #$f0
ora #$06
sta COLOR2
jmp cycle
printstr:
sta sptr
stx sptr+1
lda #0
sta scount
strloop:
ldy scount
lda (sptr),y
bne printchr
rts
printchr:
jsr printa
inc scount
bne strloop
rts
printa:
tax
lda ICPTH ; the print-one-byte vector for IOCB 0.
pha
lda ICPTL ; low byte of vector
pha
txa
rts
str1: .byte "Hello",0
str2: .byte "World",0
.ifndef RAW
end_addr:
.word INITAD
.word INITAD+1
.word _main
.endif
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