4.104.114.84.95
Last change
on this file since f286330 was
f286330,
checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/02/04 at 11:20:03
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- timer/timerisr.S: Include <rtems/asm.h> instead of <asm.h>.
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-
Property mode set to
100644
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File size:
1.3 KB
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1 | /* timer_isr() |
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2 | * |
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3 | * This routine provides the ISR for the Z8036 timer on the MVME136 |
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4 | * board. The timer is set up to generate an interrupt at maximum |
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5 | * intervals. |
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6 | * |
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7 | * Input parameters: NONE |
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8 | * |
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9 | * Output parameters: NONE |
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10 | * |
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11 | * COPYRIGHT (c) 1989-1999. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.com/license/LICENSE. |
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17 | * |
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18 | * Modifications of respective RTEMS file: COPYRIGHT (c) 1994. |
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19 | * EISCAT Scientific Association. M.Savitski |
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20 | * |
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21 | * This material is a part of the MVME162 Board Support Package |
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22 | * for the RTEMS executive. Its licensing policies are those of the |
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23 | * RTEMS above. |
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24 | * |
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25 | * $Id$ |
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26 | */ |
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27 | |
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28 | #include <rtems/asm.h> |
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29 | |
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30 | BEGIN_CODE |
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31 | |
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32 | .set INTR_CLEAR_REG, 0xfff40074 | interrupt clear register |
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33 | .set RELOAD, 0x01000000 | clear tick 1 interrupt |
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34 | |
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35 | PUBLIC (Ttimer_val) |
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36 | PUBLIC (timerisr) |
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37 | SYM (timerisr): |
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38 | move.l a0, -(a7) | save a0 |
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39 | movea.l #INTR_CLEAR_REG, a0 | a0 = addr of cmd status reg |
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40 | ori.l #RELOAD, (a0) | reload countdown |
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41 | addq.l #1, SYM (Ttimer_val) | increment timer value |
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42 | move.l (a7)+, a0 | restore a0 |
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43 | rte |
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44 | |
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45 | END_CODE |
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46 | END |
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