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1 | ;;; blinky.S --- sample program to blink LED's on M32C simulator |
2 | ;;; | |
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3 | ;;; Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011 |
4 | Free Software Foundation, Inc. | |
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5 | ;;; Contributed by Red Hat, Inc. |
6 | ;;; | |
7 | ;;; This file is part of the GNU simulators. | |
8 | ;;; | |
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9 | ;;; This program is free software; you can redistribute it and/or modify |
10 | ;;; it under the terms of the GNU General Public License as published by | |
11 | ;;; the Free Software Foundation; either version 3 of the License, or | |
12 | ;;; (at your option) any later version. | |
d45a4bef | 13 | ;;; |
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14 | ;;; This program is distributed in the hope that it will be useful, |
15 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;;; GNU General Public License for more details. | |
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18 | ;;; |
19 | ;;; You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | ;;; along with this program. If not, see <http://www.gnu.org/licenses/>. |
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21 | |
22 | .text | |
23 | ||
24 | .global _start | |
25 | _start: | |
26 | mov.w #0xe1,a0 | |
27 | top: | |
28 | sub.w #1,r0 | |
29 | mov.b r0h,[a0] | |
30 | ||
31 | mov.w #1000,r1 | |
32 | loop: | |
33 | adjnz.w #-1,r1,loop | |
34 | ||
35 | jmp.w top |