few 6502 and some 65SC02 optimizations

2017-03-12 23:21:43 +01:00
parent 0ec4534bd6
commit 0de44517ac
23 changed files with 272 additions and 78 deletions
--- a/libsrc/runtime/or.s
+++ b/libsrc/runtime/or.s
@@ -1,5 +1,6 @@
 ;
 ; Ullrich von Bassewitz, 05.08.1998
+; Christian Krueger, 11-Mar-2017, added 65SC02 optimization
 ;
 ; CC65 runtime: or on ints
 ;
@@ -8,13 +9,20 @@
        .import         addysp1
        .importzp       sp, tmp1

+        .macpack        cpu
+
 tosora0:
        ldx     #$00
 tosorax:
+.if (.cpu .bitand ::CPU_ISET_65SC02)
+        ora     (sp)
+        ldy     #1
+.else
        ldy     #0
        ora     (sp),y
-        sta     tmp1
        iny
+.endif        
+        sta     tmp1
        txa
        ora     (sp),y
        tax