File: lcompl.s

package info (click to toggle)
cc65 2.19-2
  • links: PTS
  • area: main
  • in suites: forky, sid, trixie
  • size: 20,268 kB
  • sloc: ansic: 117,151; asm: 66,339; pascal: 4,248; makefile: 1,009; perl: 607
file content (26 lines) | stat: -rw-r--r-- 395 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
;
; Ullrich von Bassewitz, 06.08.1998
;
; CC65 runtime: long complement
;

        .export         compleax
        .importzp       sreg

; eax = ~eax

compleax:
        eor     #$FF
        pha
        txa
        eor     #$FF
        tax
        lda     sreg
        eor     #$FF
        sta     sreg
        lda     sreg+1
        eor     #$FF
        sta     sreg+1
        pla
        rts