#pragma once
#include "stddef.h"
#include "stdlib.h"
// thank you osdev.
#define PIC1		0x20 // master PIC
#define PIC2		0xA0 // slave PIC
#define PIC1_COMMAND	PIC1
#define PIC1_DATA	(PIC1+1)
#define PIC2_COMMAND	PIC2
#define PIC2_DATA	(PIC2+1)
#define PIC_EOI		0x20
#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 CASCADE_IRQ 2

inline void PIC_sendEOI(uint8_t irq) {
	if (irq >= 8) { // slave also needs EOI
        outb(PIC2_COMMAND,PIC_EOI);
    }
	outb(PIC1_COMMAND,PIC_EOI);
}
extern void PIC_remap(int offset1, int offset2);