;
; Ullrich von Bassewitz, 25.11.2002
;
; CC65 runtime: Swap 1 byte of register variable space
;

   	.export	  	regswap1
	.importzp      	sp, regbank

.proc	regswap1

        lda     regbank,x               ; Get old value
        pha                             ; Save it
        lda     (sp),y                  ; Get stack loc
        sta     regbank,x               ; Store new value
        pla
        sta     (sp),y                  ; Store old value
	rts

.endproc


