6502
/
cc65
mirror of https://github.com/cc65/cc65.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fix coding style.

This commit is contained in:
Piotr Fusik 2018-03-09 18:48:24 +01:00
parent 970c5f6184
commit 18ada212e7
1 changed files with 14 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
libsrc/runtime/ldec.s
View File

@ -1,5 +1,5 @@
;
; Piotr Fusik, 07.03.2018
; Piotr Fusik, 09.03.2018
; originally by Ullrich von Bassewitz
;
; CC65 runtime: Decrement eax by value in Y
@ -13,15 +13,24 @@ deceaxy:
sec
sbc tmp1
bcs @L9
; borrow from X
; Borrow from X.
dex
cpx #$ff
cpx #$FF
bne @L9
; X wrapped from zero to $ff, borrow from sreg
; X wrapped from zero to $FF, borrow from sreg.
dec sreg
cpx sreg
bne @L9
; sreg wrapped from zero to $ff, borrow from sreg+1
; sreg wrapped from zero to $FF, borrow from sreg+1.
dec sreg+1
; Done.
@L9: rts