r16/emu/cpu_const.h

#ifndef EMU_CPU_CONST_H
#define EMU_CPU_CONST_H

#include <stdint.h>

typedef enum
{
    HLT = 0x00,
    ADD = 0x01,
    SUB = 0x02,
    MUL = 0x03,
    DIV = 0x04,
    LBS = 0x05,
    RBS = 0x06,
    BAN = 0x07,
    BOR = 0x08,
    BXO = 0x09,
    BNO = 0x0A,
    PUS = 0x0B,
    POP = 0x0C,
    JMP = 0x0D,
    JEQ = 0x0E,
    JNZ = 0x0F,
    CAL = 0x10,
    RET = 0x11,
    REG = 0x12,
    INT = 0x13,
    INP = 0x14,
    OUT = 0x15,
    DIN = 0x16,
    DOT = 0x17,
    MOV = 0x18
} CpuInstructions;

typedef enum
{
    R0  = 0x0,
    R1  = 0x1,
    R2  = 0x2,
    R3  = 0x3,
    ACU = 0x4,
    PC  = 0x5,
    SP  = 0x6
} CpuRegisters;

typedef enum
{
    value               = 0x0,
    valueInRegister     = 0x1,
    valueInRam          = 0x2,
    pointerInRegister   = 0x3
} ArgumentInfo;

typedef union
{
    int16_t s;
    uint16_t u;
} r16_int;

#define INSTRUCTION_BIT_MASK        0b0000000011111111
#define INSTRUCTION_ARG_1_INFO_MASK 0b0011000000000000
#define INSTRUCTION_ARG_2_INFO_MASK 0b1100000000000000

#define R16             "Reduced 16 bit CPU"
#define R16_AUTHOR      "Rose Apollo"
#define R16_STANDARD    "r16_0 version 1"

#endif