Added "popptr1" which is of common use to save some bytes.

2018-05-20 15:30:18 +02:00
parent 3a6430b13d
commit c95ed4b8b5
35 changed files with 113 additions and 151 deletions
--- a/libsrc/common/strncmp.s
+++ b/libsrc/common/strncmp.s
@@ -5,7 +5,7 @@
 ;

        .export         _strncmp
-        .import         popax
+        .import         popax, popptr1
        .importzp       ptr1, ptr2, ptr3


@@ -28,13 +28,11 @@ _strncmp:
        jsr     popax           ; get s2
        sta     ptr2
        stx     ptr2+1
-        jsr     popax           ; get s1
-        sta     ptr1
-        stx     ptr1+1
+        jsr     popptr1         ; get s1

 ; Loop setup

-        ldy     #0
+        ;ldy     #0               Y=0 guaranteed by popptr1

 ; Start of compare loop. Check the counter.