| 1 | ;;; blinky.S --- sample program to blink LED's on M32C simulator |
| 2 | ;;; |
| 3 | ;;; Copyright (C) 2005, 2007, 2008 Free Software Foundation, Inc. |
| 4 | ;;; Contributed by Red Hat, Inc. |
| 5 | ;;; |
| 6 | ;;; This file is part of the GNU simulators. |
| 7 | ;;; |
| 8 | ;;; This program is free software; you can redistribute it and/or modify |
| 9 | ;;; it under the terms of the GNU General Public License as published by |
| 10 | ;;; the Free Software Foundation; either version 3 of the License, or |
| 11 | ;;; (at your option) any later version. |
| 12 | ;;; |
| 13 | ;;; This program is distributed in the hope that it will be useful, |
| 14 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | ;;; GNU General Public License for more details. |
| 17 | ;;; |
| 18 | ;;; You should have received a copy of the GNU General Public License |
| 19 | ;;; along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | |
| 21 | .text |
| 22 | |
| 23 | .global _start |
| 24 | _start: |
| 25 | mov.w #0xe1,a0 |
| 26 | top: |
| 27 | sub.w #1,r0 |
| 28 | mov.b r0h,[a0] |
| 29 | |
| 30 | mov.w #1000,r1 |
| 31 | loop: |
| 32 | adjnz.w #-1,r1,loop |
| 33 | |
| 34 | jmp.w top |