4.104.114.84.95
Last change
on this file since 9980062 was
9980062,
checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:51:36
|
2003-09-04 Joel Sherrill <joel@…>
- clock/ckinit.c, console/console.c, include/bsp.h, include/coverhd.h,
spurious/spinit.c, startup/bspclean.c, startup/bspstart.c,
startup/linkcmds, startup/vmeintr.c, timer/timer.c, timer/timerisr.S:
URL for license changed.
|
-
Property mode set to
100644
|
File size:
983 bytes
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Rev | Line | |
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[ac7d5ef0] | 1 | /* timer_isr() |
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| 2 | * |
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| 3 | * This routine provides the ISR for the Z8536 timer on the DMV152 |
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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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[08311cc3] | 11 | * COPYRIGHT (c) 1989-1999. |
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[ac7d5ef0] | 12 | * On-Line Applications Research Corporation (OAR). |
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| 13 | * |
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[98e4ebf5] | 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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[9980062] | 16 | * http://www.rtems.com/license/LICENSE. |
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[ac7d5ef0] | 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 | .set TIMER, 0x0c000007 | port A |
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| 26 | .set CT1_CMD_STATUS, 0x0a | command status register |
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| 27 | .set RELOAD, 0x26 | clr IP & IUS,allow countdown |
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| 28 | |
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| 29 | PUBLIC(timerisr) |
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| 30 | SYM (timerisr): |
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| 31 | movb #CT1_CMD_STATUS,TIMER | set pointer to cmd status reg |
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| 32 | movb #RELOAD,TIMER | reload countdown |
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| 33 | addql #1, SYM (Ttimer_val) | increment timer value |
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| 34 | rte |
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| 35 | |
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| 36 | END_CODE |
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| 37 | END |
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