pic.h

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//
// Created on 8/15/20.
//

#ifndef KERNOS_PIC_H
#define KERNOS_PIC_H

#include <common.h>

namespace PIC
{
    enum ICW1_0 : uint8_t
    {
        NO_ICW4  = 0b0,
        USE_ICW4 = 0b1
    };

    enum ICW1_1 : uint8_t
    {
        CASCADE = 0b00,
        SINGLE  = 0b10
    };

    enum ICW1_2 : uint8_t
    {
        INTRP_8B = 0b000,
        INTRP_4B = 0b100
    };

    enum ICW1_3 : uint8_t
    {
        EDGE_TRIGGERED  = 0b0000,
        LEVEL_TRIGGERED = 0b1000
    };

    enum ICW1_4 : uint8_t
    {
        INVALID  = 0b00000,
        USE_ICW1 = 0b10000
    };

    enum ICW4_0 : uint8_t
    {
        MODE_8085 = 0b0,
        MODE_8086 = 0b1
    };

    enum ICW4_1 : uint8_t
    {
        EOI      = 0b00,
        AUTO_EOI = 0b10
    };

    enum ICW4_4 : uint8_t
    {
        SEQUENTIAL           = 0b00000,
        SPECIAL_FULLY_NESTED = 0b10000
    };

    enum OCW2 : uint8_t 
    {
        NON_SPECIFIC_EOI    = 0b0010'0000, ///< 0x20
        NOP                 = 0b0100'0000,
        SPECIFIC_EOI        = 0b0110'0000,
        ROTATE_AEOI         = 0b1000'0000,
        ROTATE_NON_SPEC_EOI = 0b1010'0000,
        SET_PRIORITY_CMD    = 0b1100'0000,
        ROTATE_SPEC_EOI     = 0b1110'0000,
    };

    void Remap();

} // namespace PIC

#endif //KERNOS_PIC_H