#include "port_io.h"
#include <stdint.h>

Macros
#define	PIC1 0x20 /* IO base address for master PIC */

#define	PIC2 0xA0 /* IO base address for slave PIC */

#define	PIC1_COMMAND PIC1

#define	PIC1_DATA (PIC1+1)

#define	PIC2_COMMAND PIC2

#define	PIC2_DATA (PIC2+1)

#define	PIC_EOI 0x20 /* End-of-interrupt command code */

#define	ICW1_ICW4 0x01 /* Indicates that ICW4 will be present */

#define	ICW1_SINGLE 0x02 /* Single (cascade) mode */

#define	ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */

#define	ICW1_LEVEL 0x08 /* Level triggered (edge) mode */

#define	ICW1_INIT 0x10 /* Initialization - required! */

#define	ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */

#define	ICW4_AUTO 0x02 /* Auto (normal) EOI */

#define	ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */

#define	ICW4_BUF_MASTER 0x0C /* Buffered mode/master */

#define	ICW4_SFNM 0x10 /* Special fully nested (not) */

#define	PIC_MASTER_IRQ_OFFSET 0x20

#define	PIC_SLAVE_IRQ_OFFSET 0x28

#define	CASCADE_IRQ 2

Functions
static void	PIC_sendEOI (uint8_t irq)

void	PIC_init ()

void	PIC_remap (int offset1, int offset2)

void	PIC_unmask (void)

void	PIC_mask (void)

void	PIC_set_mask (uint8_t IRQline)

void	PIC_clear_mask (uint8_t IRQline)

Macro Definition Documentation

◆ CASCADE_IRQ

#define CASCADE_IRQ 2

◆ ICW1_ICW4

#define ICW1_ICW4 0x01 /* Indicates that ICW4 will be present */

◆ ICW1_INIT

#define ICW1_INIT 0x10 /* Initialization - required! */

◆ ICW1_INTERVAL4

#define ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */

◆ ICW1_LEVEL

#define ICW1_LEVEL 0x08 /* Level triggered (edge) mode */

◆ ICW1_SINGLE

#define ICW1_SINGLE 0x02 /* Single (cascade) mode */

◆ ICW4_8086

#define ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */

◆ ICW4_AUTO

#define ICW4_AUTO 0x02 /* Auto (normal) EOI */

◆ ICW4_BUF_MASTER

#define ICW4_BUF_MASTER 0x0C /* Buffered mode/master */

◆ ICW4_BUF_SLAVE

#define ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */

◆ ICW4_SFNM

#define ICW4_SFNM 0x10 /* Special fully nested (not) */

◆ PIC1

#define PIC1 0x20 /* IO base address for master PIC */

◆ PIC1_COMMAND

#define PIC1_COMMAND PIC1

◆ PIC1_DATA

#define PIC1_DATA (PIC1+1)

◆ PIC2

#define PIC2 0xA0 /* IO base address for slave PIC */

◆ PIC2_COMMAND

#define PIC2_COMMAND PIC2

◆ PIC2_DATA

#define PIC2_DATA (PIC2+1)

◆ PIC_EOI

#define PIC_EOI 0x20 /* End-of-interrupt command code */

◆ PIC_MASTER_IRQ_OFFSET

#define PIC_MASTER_IRQ_OFFSET 0x20

◆ PIC_SLAVE_IRQ_OFFSET

#define PIC_SLAVE_IRQ_OFFSET 0x28

Function Documentation

◆ PIC_clear_mask()

void PIC_clear_mask ( uint8_t IRQline )

◆ PIC_init()

void PIC_init ( )

◆ PIC_mask()

void PIC_mask ( void )

◆ PIC_remap()

void PIC_remap	(	int	offset1,
		int	offset2
	)

◆ PIC_sendEOI()

static void PIC_sendEOI ( uint8_t irq )

inlinestatic

◆ PIC_set_mask()

void PIC_set_mask ( uint8_t IRQline )

◆ PIC_unmask()

void PIC_unmask ( void )

Macros

Functions