the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

test #2674

Browse Source
This commit is contained in:
mrdudz
2025-06-23 17:09:06 +02:00
parent 4863a3e29b
commit 5fc15a7a60
204 changed files with 915 additions and 912 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
libsrc/runtime/lsub.s
View File

@@ -9,7 +9,7 @@
;
.export tossub0ax, tossubeax
.import addysp1
.importzp sp, sreg
.importzp c_sp, sreg
.macpack cpu
@@ -27,24 +27,24 @@ tossubeax:
sec
eor #$FF
.if (.cpu .bitand ::CPU_ISET_65SC02)
adc (sp) ; 65SC02 version - saves 2 cycles
adc (c_sp) ; 65SC02 version - saves 2 cycles
ldy #1
.else
ldy #0
adc (sp),y ; lo byte
adc (c_sp),y ; lo byte
iny
.endif
pha ; Save low byte
txa
eor #$FF
adc (sp),y ; byte 1
adc (c_sp),y ; byte 1
tax
iny
lda (sp),y
lda (c_sp),y
sbc sreg ; byte 2
sta sreg
iny
lda (sp),y
lda (c_sp),y
sbc sreg+1 ; byte 3
sta sreg+1
pla ; Restore byte 0