2013-12-05 11:40:44 +00:00
|
|
|
;*
|
|
|
|
|
;* void cclearxy (unsigned char x, unsigned char y, unsigned char length);
|
|
|
|
|
;* void cclear (unsigned char length);
|
|
|
|
|
;*
|
|
|
|
|
|
2017-02-01 18:46:04 +00:00
|
|
|
.export _cclearxy, _cclear
|
|
|
|
|
.import popa, _gotoxy, cputdirect
|
|
|
|
|
.importzp tmp1
|
|
|
|
|
|
2013-12-05 11:40:44 +00:00
|
|
|
_cclearxy:
|
2017-02-01 18:46:04 +00:00
|
|
|
pha ; Save length
|
|
|
|
|
jsr popa ; get Y
|
|
|
|
|
jsr _gotoxy
|
|
|
|
|
pla
|
|
|
|
|
|
2013-12-05 11:40:44 +00:00
|
|
|
_cclear:
|
2017-02-01 18:46:04 +00:00
|
|
|
cmp #0 ; Zero length?
|
|
|
|
|
beq L2
|
|
|
|
|
sta tmp1
|
2013-12-05 11:40:44 +00:00
|
|
|
|
2017-02-01 18:46:04 +00:00
|
|
|
L1: lda #$20 ; Space
|
|
|
|
|
jsr cputdirect
|
|
|
|
|
dec tmp1
|
|
|
|
|
bne L1
|
|
|
|
|
|
|
|
|
|
L2: rts
|
