1; 2; Ullrich von Bassewitz, 25.10.2000 3; 4; CC65 runtime: Increment the stackpointer by 2. For performance reasons, 5; this module also contains the popax function. 6 7 .export popax, incsp2 8 .importzp sp 9 10 .macpack cpu 11 12; Pop a/x from stack. This function will run directly into incsp2 13 14.proc popax 15 16 ldy #1 17 lda (sp),y ; get hi byte 18 tax ; into x 19.if (.cpu .bitand ::CPU_ISET_65SC02) 20 lda (sp) ; get lo byte 21.else 22 dey 23 lda (sp),y ; get lo byte 24.endif 25 26.endproc 27 28 29 30.proc incsp2 31 32 inc sp ; 5 33 beq @L1 ; 2 34 inc sp ; 5 35 beq @L2 ; 2 36 rts 37 38@L1: inc sp ; 5 39@L2: inc sp+1 ; 5 40 rts 41 42.endproc 43 44 45 46 47 48