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Added an entry point that clears the high word of rhs.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4027 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz 2009-08-16 16:38:52 +00:00
parent 3aa4d74b18
commit bfc8bd6d74
1 changed files with 7 additions and 2 deletions
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9
libsrc/runtime/lrsub.s
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@ -7,11 +7,16 @@
;
; EAX = EAX - TOS
;
.export tosrsubeax
.export tosrsub0ax, tosrsubeax
.import addysp1
.importzp sp, sreg, tmp1
tosrsubeax:
tosrsub0ax:
ldy #$00
sty sreg
sty sreg+1
tosrsubeax:
ldy #0
sec
sbc (sp),y ; byte 0