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cc65/libsrc/atari/systime.s

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;
; Ullrich von Bassewitz, 12.11.2002
;
; time_t _systime (void);
; /* Similar to time(), but:
; * - Is not ISO C
; * - Does not take the additional pointer
; * - Does not set errno when returning -1
; */
;
.export __systime
.importzp sreg
.code
.proc __systime
lda #$FF
tax
sta sreg
sta sreg+1
rts ; Return -1
.endproc