Started to add support for the P500 aka CBM510

git-svn-id: svn://svn.cc65.org/cc65/trunk@911 b7a2c559-68d2-44c3-8de9-860c34a00d81
2001-09-13 21:09:19 +00:00
parent 6be0510138
commit 259967895f
7 changed files with 662 additions and 0 deletions
--- a/libsrc/cbm510/banking.s
+++ b/libsrc/cbm510/banking.s
@@ -0,0 +1,41 @@
+;
+; Ullrich von Bassewitz, 13.09.2001
+;
+; Banking routines for the 510.
+;
+
+ 	.export		set_bank, sys_bank, restore_bank
+	.importzp     	ptr1
+
+	.include      	"zeropage.inc"
+
+.code
+
+.proc	sys_bank
+	pha
+	lda  	IndReg
+	sta  	IndSegSave
+	lda  	#$0F
+	sta  	IndReg
+	pla
+	rts
+.endproc
+
+.proc	set_bank
+	pha
+	lda  	IndReg
+	sta  	IndSegSave
+	pla
+	sta  	IndReg
+	rts
+.endproc
+
+.proc	restore_bank
+	pha
+	lda	IndSegSave
+	sta	IndReg
+	pla
+	rts
+.endproc
+
+