Files
cc65/libsrc/atari/cpeekchar.s
2017-06-17 03:01:31 +02:00

42 lines
494 B
ArmAsm

.export _cpeekchar
.export _cpeekcharxy
.import _gotoxy
.import mul40
.importzp ptr4
.include "atari.inc"
.segment "CODE"
_cpeekcharxy:
jsr _gotoxy ; Set cursor
_cpeekchar:
lda ROWCRS
jsr mul40 ; destroys tmp4
clc
adc SAVMSC ; add start of screen memory
sta ptr4
txa
adc SAVMSC+1
sta ptr4+1
ldy COLCRS
lda (ptr4),y ; get char
tax
;; convert to asc
;; ugly hack here to make tetris fx work :=P
lda #' '
cpx #0
beq @l
lda #0
@l:
ldx #0
rts