4.104.114.84.95
Last change
on this file since 6ff7e2c was
6ff7e2c,
checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:51:20
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2003-09-04 Joel Sherrill <joel@…>
- clock/ckinit.c, console/console.c, include/bsp.h, include/coverhd.h,
start/80386ex.h, start/80386ex.inc, start/macros.inc, start/start.S,
startup/bspstart.c, startup/linkcmds, startup/setvec.c,
timer/timer.c, timer/timerisr.S: URL for license changed.
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-
Property mode set to
100644
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File size:
883 bytes
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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 | * $Id$ |
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19 | */ |
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20 | |
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21 | #include "asm.h" |
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22 | |
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23 | BEGIN_CODE |
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24 | |
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25 | EXTERN (Ttimer_val) |
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26 | |
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27 | PUBLIC (timerisr) |
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28 | SYM (timerisr): |
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29 | addl $250, SYM (Ttimer_val) # another 250 microseconds |
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30 | pushl eax |
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31 | movb 0xa0,al /* signal generic End Of Interrupt (EOI) to slave PIC */ |
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32 | outb al, $0x20 |
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33 | movb $0x20, al |
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34 | outb al, $0x20 /* signal generic EOI to Master PIC */ |
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35 | popl eax |
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36 | iret |
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37 | |
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38 | END_CODE |
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39 | END |
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