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cc65/libsrc/atari7800/mono_clrscr.s

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.include "atari7800.inc"
.export _mono_clrscr
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.import _mono_screen
.import pushax, ___bzero
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.include "extzp.inc"
.code
.proc _mono_clrscr
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lda #<_mono_screen
ldx #>_mono_screen
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jsr pushax
ldx #>(mono_charsperline * screenrows)
lda #<(mono_charsperline * screenrows)
jmp ___bzero
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.endproc
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;-------------------------------------------------------------------------------
; force the init constructor to be imported
.import mono_initconio
conio_init = mono_initconio