pic.h

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#pragma once
#include <stdint.h>
 
#define PIC1        0x20        /* IO base address for master PIC */
#define PIC2        0xA0        /* IO base address for slave PIC */
#define PIC1_COMMAND    PIC1
#define PIC1_DATA   (PIC1+1)
#define PIC2_COMMAND    PIC2
#define PIC2_DATA   (PIC2+1)
 
void pic_Remap(uint8_t offset1, uint8_t offset2);
void pic_EOI(unsigned char irq);
void pic_SetHz(uint16_t hz);
/* 
 
8259A Input pin Interrupt Number    Description
IRQ0    0x08    Timer
IRQ1    0x09    Keyboard
IRQ2    0x0A    Cascade for 8259A Slave controller
IRQ3    0x0B    Serial port 2
IRQ4    0x0C    Serial port 1
IRQ5    0x0D    AT systems: Parallel Port 2. PS/2 systems: reserved
IRQ6    0x0E    Diskette drive
IRQ7    0x0F    Parallel Port 1
IRQ8/IRQ0   0x70    CMOS Real time clock
IRQ9/IRQ1   0x71    CGA vertical retrace
IRQ10/IRQ2  0x72    Reserved
IRQ11/IRQ3  0x73    Reserved
IRQ12/IRQ4  0x74    AT systems: reserved. PS/2: auxiliary device
IRQ13/IRQ5  0x75    FPU
IRQ14/IRQ6  0x76    Hard disk controller
IRQ15/IRQ7  0x77    Reserved
 
*/