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timerisr.S @ 6ff7e2c

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

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.

File size: 883 bytes

Rev	Line
[752cd8f]	1	/* timer_isr()
	2	*
	3	* This routine provides the ISR for the Z8036 timer on the MVME136
	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	*
[08311cc3]	11	* COPYRIGHT (c) 1989-1999.
[752cd8f]	12	* On-Line Applications Research Corporation (OAR).
	13	*
[98e4ebf5]	14	* The license and distribution terms for this file may be
	15	* found in the file LICENSE in this distribution or at
[6ff7e2c]	16	* http://www.rtems.com/license/LICENSE.
[752cd8f]	17	*
	18	* $Id$
	19	*/
	20
	21	#include "asm.h"
	22
	23	BEGIN_CODE
	24
	25	EXTERN (Ttimer_val)
	26
	27	PUBLIC (timerisr)
	28	SYM (timerisr):
	29	addl $250, SYM (Ttimer_val) # another 250 microseconds
[bd8c8b2a]	30	pushl eax
	31	movb 0xa0,al /* signal generic End Of Interrupt (EOI) to slave PIC */
	32	outb al, $0x20
	33	movb $0x20, al
	34	outb al, $0x20 /* signal generic EOI to Master PIC */
	35	popl eax
[752cd8f]	36	iret
	37
	38	END_CODE
	39	END

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