You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
21 lines
245 B
ArmAsm
21 lines
245 B
ArmAsm
12 years ago
|
;
|
||
|
|
; Ullrich von Bassewitz, 05.08.1998
|
||
|
|
;
|
||
|
|
; CC65 runtime: boolean negation
|
||
|
|
;
|
||
|
|
|
||
|
|
.export bnega, bnegax
|
||
|
|
.import return0, return1
|
||
|
|
|
||
|
|
bnegax: cpx #0
|
||
|
|
bne L0
|
||
|
|
bnega: tax
|
||
|
|
bne L0
|
||
|
|
L1: lda #1 ; Zero already in X
|
||
|
|
rts
|
||
|
|
|
||
|
|
L0: ldx #0
|
||
|
|
txa
|
||
|
|
rts
|
||
|
|
|