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Remove value test code (no longer needed)

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git-svn-id: svn://svn.cc65.org/cc65/trunk@44 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2000-06-10 15:48:44 +00:00
parent 97c9226c1e
commit 01b788b1fc
1 changed files with 3 additions and 18 deletions
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21
libsrc/runtime/add.s
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@ -8,7 +8,7 @@
; called a lot!
.export tosadda0, tosaddax
.importzp sp, tmp1
.importzp sp
tosadda0:
ldx #0
@ -16,7 +16,7 @@ tosaddax:
ldy #0
clc
adc (sp),y ; lo byte
sta tmp1 ; save it
pha ; save it
txa
iny
adc (sp),y ; hi byte
@ -27,21 +27,6 @@ tosaddax:
sta sp
bcc L1
inc sp+1
L1: txa ; Test high byte
bmi L2
bne L3
lda tmp1 ; Get low byte
rts
; Value is negative
L2: lda tmp1 ; Get low byte
ldy #$FF ; Force negative
rts
; Value is positive != 0
L3: lda tmp1 ; Get low byte
ldy #1
L1: pla ; Restore low byte
rts