1
0
mirror of https://github.com/cc65/cc65.git synced 2024-07-05 06:28:57 +00:00
cc65/libsrc/runtime/dec.s

32 lines
326 B
ArmAsm
Raw Normal View History

;
; Ullrich von Bassewitz, 29.12.1999
;
; CC65 runtime: Decrement ax by constant or value in Y
;
.export decaxy
.export decax2, decax1
.importzp tmp1
decaxy: sty tmp1
sec
sbc tmp1
bcs *+3
dex
rts
decax2: sec
sbc #2
bcs *+3
dex
rts
decax1: sec
sbc #1
bcs *+3
dex
rts