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cc65/libsrc/creativision/chline.s

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2013-12-05 11:40:44 +00:00
;* void chlinexy (unsigned char x, unsigned char y, unsigned char length);
;* void chline (unsigned char length);
.export _chlinexy, _chline
.import popa, _gotoxy, cputdirect
.importzp tmp1
.include "creativision.inc"
2017-02-01 18:46:04 +00:00
2013-12-05 11:40:44 +00:00
_chlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length
_chline:
cmp #0 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: lda #CH_HLINE ; Horizontal line, screen code
jsr cputdirect ; Direct output
dec tmp1
bne L1
L9: rts