#ifndef PIC
#define PIC

#include "k_defines.h"

/*
 * IRQ macros
 */
#define ALL       0xFF
#define TIMER     0
#define KEYBOARD  1
#define CASCADE   2
#define COM2_4    3
#define COM1_3    4
#define LPT       5
#define FLOPPY    6
#define FREE7     7
#define CLOCK     8
#define FREE9     9
#define FREE10    10
#define FREE11    11
#define PS2MOUSE  12
#define COPROC    13
#define IDE_1     14
#define IDE_2     15

/*
 * PIC macros
 * Master = PIC chip 1
 * Slave = PIC chip 2
 */
#define MASTER          0x20
#define MASTERDATA      0x21
#define SLAVE           0xA0
#define SLAVEDATA       0xA1
#define EOI             0x20

/*
 * ICW1 and ICW4 control words are the only ones we have to worry about
 */
#define ICW1_INIT    0x10               // required for PIC initialisation
#define ICW1_EDGE    0x08               // edge triggered IRQs
#define ICW1_SINGLE  0x02               // only MASTER (not cascaded)
#define	ICW1_ICW4    0x01               // there IS an ICW4 control word

#define ICW4_SFNM    0x10               // Special Fully Nested Mode
#define ICW4_BUFFER  0x08               // Buffered Mode
#define ICW4_MASTER  0x04               // this is the Master PIC
#define ICW4_AEOI    0x02               // Auto EOI
#define ICW4_8086    0x01               // 80/86 Mode

#endif // pic.h

/*
 * Functions
 */
void remapPIC(int pic1, int pic2);      //remap PIC
void maskIRQ(byte irq);                 //PIC irq masking
void unmaskIRQ(byte irq);               //PIC irq unmasking
void INTS(bool on);                     //sti or cli