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/* timer_isr()
*
* This routine provides the ISR for the Z8536 timer on the DMV152
* board. The timer is set up to generate an interrupt at maximum
* intervals.
*
* Input parameters: NONE
*
* Output parameters: NONE
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include "asm.h"
BEGIN_CODE
.set TIMER, 0x0c000007 | port A
.set CT1_CMD_STATUS, 0x0a | command status register
.set RELOAD, 0x26 | clr IP & IUS,allow countdown
PUBLIC(timerisr)
SYM (timerisr):
movb #CT1_CMD_STATUS,TIMER | set pointer to cmd status reg
movb #RELOAD,TIMER | reload countdown
addql #1, SYM (Ttimer_val) | increment timer value
rte
END_CODE
END
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