pic.h

#ifndef INCLUDE_PIC_H
#define INCLUDE_PIC_H

/*                      I/O port */
#define PIC_1		0x20		/* IO base address for master PIC */
#define PIC_2		0xA0		/* IO base address for slave PIC */
#define PIC_1_COMMAND	PIC_1
#define PIC_1_DATA	(PIC_1+1)
#define PIC_2_COMMAND	PIC_2
#define PIC_2_DATA	(PIC_2+1)

#define PIC_1_OFFSET 0x20
#define PIC_2_OFFSET 0x28
#define PIC_2_END PIC_2_OFFSET + 7

#define PIC_1_COMMAND_PORT 0x20
#define PIC_2_COMMAND_PORT 0xA0
#define PIC_ACKNOWLEDGE 0x20

#define PIC_ICW1_ICW4            0x01	/* ICW4 (not) needed */
#define PIC_ICW1_SINGLE          0x02	/* Single (cascade) mode */
#define PIC_ICW1_INTERVAL4       0x04	/* Call address interval 4 (8) */
#define PIC_ICW1_LEVEL           0x08	/* Level triggered (edge) mode */
#define PIC_ICW1_INIT            0x10	/* Initialization - required! */

#define PIC_ICW4_8086            0x01	/* 8086/88 (MCS-80/85) mode */
#define PIC_ICW4_AUTO            0x02	/* Auto (normal) EOI */
#define PIC_ICW4_BUF_SLAVE       0x08	/* Buffered mode/slave */
#define PIC_ICW4_BUF_MASTER      0x0C	/* Buffered mode/master */
#define PIC_ICW4_SFNM            0x10	/* Special fully nested (not) */

void pic_remap(int offset1, int offset2);
void pic_acknowledge(unsigned int interrupt);

#endif /* INCLUDE_PIC_H */