summaryrefslogtreecommitdiff
path: root/sim/m32c/blinky.S
blob: 461c8e019a74555946f9e1abd86d4fac54182066 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
;;; blinky.S --- sample program to blink LED's on M32C simulator
;;; 
;;; Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;;; Contributed by Red Hat, Inc.
;;;
;;; This file is part of the GNU simulators.
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.

	.text

	.global _start
_start:
	mov.w	#0xe1,a0
top:
	sub.w	#1,r0
	mov.b	r0h,[a0]

	mov.w	#1000,r1
loop:
	adjnz.w	#-1,r1,loop

	jmp.w	top