/* in short: map irq 0-15 to int 32-47 */
void irq_remap(){
pic_init();
outb(PIC1_DATA, 0x20); // ICW2: Master PIC vector offset
outb(PIC2_DATA, 0x28); // ICW2: Slave PIC vector offset
outb(PIC1_DATA, 4); // ICW3: tell Master PIC that there is a slave PIC at IRQ2 (0000 0100)
outb(PIC2_DATA, 2); // ICW3: tell Slave PIC its cascade identity (0000 0010)
outb(PIC1_DATA, ICW4_8086);
outb(PIC2_DATA, ICW4_8086);
irq_clear_mask();
}
void irq_configure(void){
// Remap IRQ to avoid conflict with Intel Interrupts (thx IBM)
pic_remap(MPIC_IRQ_OFFSET, SPIC_IRQ_OFFSET);
irq_clear_mask(1);
}
void keyboard_init() {
irq_clear_mask(1);
}