cc65/libsrc/cbm510/banking.s

;
; Ullrich von Bassewitz, 13.09.2001
;
; Banking routines for the 510.
;

 	.export		set_bank, sys_bank, restore_bank
	.importzp     	ptr1

	.include      	"cbm510.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
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			`;`
			`; Ullrich von Bassewitz, 13.09.2001`
			`;`
			`; Banking routines for the 510.`
			`;`

			`.export set_bank, sys_bank, restore_bank`
			`.importzp ptr1`

Combine the existing include files, move zp space out of crt0.s git-svn-id: svn://svn.cc65.org/cc65/trunk@1290 b7a2c559-68d2-44c3-8de9-860c34a00d81 2002-05-26 09:08:52 +00:00			`.include "cbm510.inc"`
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
			`.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`