luxos/Kernel/hal/cpu/pic.c

#include <stdio.h>
#include "pic.h"

void PicRemap(int pic1, int pic2)
{
      // Send ICW1
      outportb(0x20, 0x11);
      outportb(0xA0, 0x11);
      
      // send ICW2
      outportb(0x21, pic1); // remap pics
      outportb(0xA1, pic2);
      
      // send ICW3
      outportb(0x21, 4);
      outportb(0xA1, 2);
      
      // Send ICW4
      outportb(0x21, 0x01);
      outportb(0xA1, 0x01);
      
      outportb(0x21, 0x00);
}