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cc65/libsrc/geos/common/zerobss.s
izydorst 0ce4187e0e small optimization, 5 bytes saved
git-svn-id: svn://svn.cc65.org/cc65/trunk@2372 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-08-19 22:38:01 +00:00

26 lines
406 B
ArmAsm

;
; Maciej 'YTM/Elysium' Witkowiak <ytm@elysium.pl>
; 23.12.2002
;
; Zero the bss segment.
;
.export zerobss
.import __BSS_RUN__, __BSS_SIZE__
.include "../inc/jumptab.inc"
.include "../inc/geossym.inc"
.code
zerobss:
lda #<__BSS_SIZE__
ldx #>__BSS_SIZE__
sta r0L
stx r0H
lda #<__BSS_RUN__
ldx #>__BSS_RUN__
sta r1L
stx r1H
jmp ClearRam