#ifndef PIC_H
#define PIC_H

#define MASTER_PORT_A   0x20
#define MASTER_PORT_B   0x21
#define SLAVE_PORT_A    0xa0
#define SLAVE_PORT_B    0xa1

// ICW1
#define ICW1_ICW4   0x1
#define ICW1_SINGLE 0x2
#define ICW_LT      0x8
#define ICW1_INIT   0x10

// ICW2
#define ICW2_M_OFFSET   0x20
#define ICW2_S_OFFSET   0x28

// ICW3 / OCW1
#define PIC_PIN_0  0x1
#define PIC_PIN_1  0x2
#define PIC_PIN_2  0x4
#define PIC_PIN_3  0x8
#define PIC_PIN_4  0x10
#define PIC_PIN_5  0x20
#define PIC_PIN_6  0x40
#define PIC_PIN_7  0x80

// ICW4
#define ICW4_INIT       0x1
#define ICW4_AUTO_EOI   0x2
#define ICW4_NESTED     0x10

// OCW2
#define OCW2_EOI    0x20
#define OCW2_SPEC   0x40
#define OCW2_ROT    0x80

void remap_pic(void);

#endif  /* !PIC_H */