/* 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