Save two bytes in pushax and popptr1

It's not because Y must equal zero on rts that we should'nt spare one byte and one cycle.
2024-01-19 21:14:47 +01:00
parent 166a4b25f7
commit b23a7ec407
2 changed files with 14 additions and 2 deletions
--- a/libsrc/runtime/pushax.s
+++ b/libsrc/runtime/pushax.s
@@ -7,6 +7,8 @@
        .export         push0, pusha0, pushax
        .importzp       sp

+        .macpack        cpu
+
 push0:  lda     #0
 pusha0: ldx     #0

@@ -29,7 +31,11 @@ pusha0: ldx     #0
        sta     (sp),y          ; (27)
        pla                     ; (31)
        dey                     ; (33)
+.if (.cpu .bitand ::CPU_ISET_65SC02)
+        sta     (sp)            ; (37)
+.else
        sta     (sp),y          ; (38)
-        rts                     ; (44)
+.endif
+        rts                     ; (44/43)

 .endproc