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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [m68k/] [dmv152/] [timer/] [timerisr.S] - Blame information for rev 30

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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) 1989-1999.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  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: timerisr.S,v 1.2 2001-09-27 12:00:01 chris Exp $
 */
 
#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

Line No.	Rev	Author	Line
1	30	unneback	`/* timer_isr()`
2			`*`
3			`* This routine provides the ISR for the Z8536 timer on the DMV152`
4			`* board. The timer is set up to generate an interrupt at maximum`
5			`* intervals.`
6			`*`
7			`* Input parameters: NONE`
8			`*`
9			`* Output parameters: NONE`
10			`*`
11			`* COPYRIGHT (c) 1989-1999.`
12			`* On-Line Applications Research Corporation (OAR).`
13			`*`
14			`* The license and distribution terms for this file may be`
15			`* found in the file LICENSE in this distribution or at`
16			`* http://www.OARcorp.com/rtems/license.html.`
17			`*`
18			`* $Id: timerisr.S,v 1.2 2001-09-27 12:00:01 chris Exp $`
19			`*/`
20
21			`#include "asm.h"`
22
23			`BEGIN_CODE`
24
25			`.set TIMER, 0x0c000007 \| port A`
26			`.set CT1_CMD_STATUS, 0x0a \| command status register`
27			`.set RELOAD, 0x26 \| clr IP & IUS,allow countdown`
28
29			`PUBLIC(timerisr)`
30			`SYM (timerisr):`
31			`movb #CT1_CMD_STATUS,TIMER \| set pointer to cmd status reg`
32			`movb #RELOAD,TIMER \| reload countdown`
33			`addql #1, SYM (Ttimer_val) \| increment timer value`
34			`rte`
35
36			`END_CODE`
37			`END`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [m68k/] [dmv152/] [timer/] [timerisr.S] - Blame information for rev 30