blob: bbf291b519faaa9a106ad5ca65d249c22afe6788 (
plain) (
tree)
|
|
/* irq_asm.h
*
* This include file has defines to represent some contant used
* to program and manage the Intel 8259 interrupt controller
*
*
* COPYRIGHT (c) 1998 valette@crf.canon.fr
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#ifndef __IRQ_ASM_H__
#define __IRQ_ASM_H__
#define BSP_ASM_IRQ_VECTOR_BASE 0x20
/* PIC's command and mask registers */
#define PIC_MASTER_COMMAND_IO_PORT 0x20 /* Master PIC command register */
#define PIC_SLAVE_COMMAND_IO_PORT 0xa0 /* Slave PIC command register */
#define PIC_MASTER_IMR_IO_PORT 0x21 /* Master PIC Interrupt Mask Register */
#define PIC_SLAVE_IMR_IO_PORT 0xa1 /* Slave PIC Interrupt Mask Register */
/* Command for specific EOI (End Of Interrupt): Interrupt acknowledge */
#define PIC_EOSI 0x60 /* End of Specific Interrupt (EOSI) */
#define PIC_EOI 0x20 /* Generic End of Interrupt (EOI) */
#endif
|
