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cc65/libsrc/pce/clrscr.s

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.include "pce.inc"
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.include "extzp.inc"
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.import PLOT
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.export _clrscr
_clrscr:
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st0 #VDC_MAWR
st1 #<$0000
st2 #>$0000
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st0 #VDC_VWR
ldy #$40
rowloop:
ldx #$80
colloop:
lda #' '
sta a:VDC_DATA_LO
lda #$02
sta a:VDC_DATA_HI
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dex
bne colloop
dey
bne rowloop
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; Go to the home position.
stz CURS_X
stz CURS_Y
jmp PLOT
;-------------------------------------------------------------------------------
; force the init constructor to be imported
.import initconio
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conio_init = initconio