Some more 6502 code

git-svn-id: svn://svn.cc65.org/cc65/trunk@485 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/runtime/incsp2.s

@@ -14,8 +14,12 @@
 	ldy  	#1
    	lda	(sp),y		; get hi byte
        	tax	     		; into x
+.ifpc02	
+	lda	(sp)		; get lo byte
+.else
    	dey
    	lda	(sp),y		; get lo byte
+.endif
 
 .endproc
 

libsrc/runtime/sub.s

@@ -5,7 +5,7 @@
 ;
 
        	.export		tossuba0, tossubax
-	.import		addysp1		
+	.import		addysp1
 	.importzp	sp, ptr1
 
 ;
@@ -15,14 +15,19 @@
 tossuba0:
 	ldx	#0
 tossubax:
-	ldy	#0
 	sta	ptr1
 	stx	ptr1+1
-	lda	(sp),y		; lo byte
+.ifpc02
-	sec
+      	lda	(sp),y		; Get lo byte
+      	ldy	#1		; Hi index
+.else
+      	ldy	#0
+      	lda	(sp),y		; Lo byte
+      	iny			; Hi index
+.endif
+	sec			   
 	sbc	ptr1
 	sta	ptr1		; save lo byte
-	iny
 	lda	(sp),y
 	sbc	ptr1+1
 	tax