#include "z80.h"
#include "z80debug.h"

#include <stdio.h>

namespace z80
{
    static uint8_t *memory = nullptr;
    static uint32_t t = 0;

    int (*in_ports[256])();
    void (*out_ports[256])(int);

    #define _rM16(a) (uint16_t*)&memory[a]
    #define rM16(a) *_rM16(a)

    #define fC 0b00000001
    #define fN 0b00000010
    #define fP 0b00000100
    #define fV 0b00000100
    #define fX 0b00001000
    #define fH 0b00010000
    #define fY 0b00100000
    #define fZ 0b01000000
    #define fS 0b10000000

    #define cNO 255
    #define cNZ 0
    #define cZ  1
    #define cNC 2
    #define cC  3
    #define cPO 4
    #define cPE 5
    #define cP  6
    #define cM  7

    uint8_t regs[28];

    uint8_t *_rF = &regs[0];
    uint8_t *_rA = &regs[1];
    uint8_t *_rC = &regs[2];
    uint8_t *_rB = &regs[3];
    uint8_t *_rE = &regs[4];
    uint8_t *_rD = &regs[5];
    uint8_t *_rL = &regs[6];
    uint8_t *_rH = &regs[7];

    uint16_t *_rAF = (uint16_t*)&regs[0];
    uint16_t *_rBC = (uint16_t*)&regs[2];
    uint16_t *_rDE = (uint16_t*)&regs[4];
    uint16_t *_rHL = (uint16_t*)&regs[6];

    uint8_t *_rF2 = &regs[8];
    uint8_t *_rA2 = &regs[9];
    uint8_t *_rC2 = &regs[10];
    uint8_t *_rB2 = &regs[11];
    uint8_t *_rE2 = &regs[12];
    uint8_t *_rD2 = &regs[13];
    uint8_t *_rL2 = &regs[14];
    uint8_t *_rH2 = &regs[15];

    uint16_t *_rAF2 = (uint16_t*)&regs[8];
    uint16_t *_rBC2 = (uint16_t*)&regs[10];
    uint16_t *_rDE2 = (uint16_t*)&regs[12];
    uint16_t *_rHL2 = (uint16_t*)&regs[14];

    uint8_t *_rIXL = &regs[16];
    uint8_t *_rIXH = &regs[17];
    uint8_t *_rIYL = &regs[18];
    uint8_t *_rIYH = &regs[19];
    uint16_t *_rIX = (uint16_t*)&regs[16];
    uint16_t *_rIY = (uint16_t*)&regs[18];

    uint16_t *_rSP = (uint16_t*)&regs[20];

    uint8_t *_rI = &regs[22];
    uint8_t *_rR = &regs[23];

    uint16_t *_rPC = (uint16_t*)&regs[24];

    uint16_t *_rWZ = (uint16_t*)&regs[26];
    uint8_t  *_rZ = (uint8_t*)&regs[26];
    uint8_t  *_rW = (uint8_t*)&regs[27];

    uint8_t iff1, iff2, im;

    #define rA (*_rA)
    #define rF (*_rF)
    #define rB (*_rB)
    #define rC (*_rC)
    #define rD (*_rD)
    #define rE (*_rE)
    #define rH (*_rH)
    #define rL (*_rL)
    #define rW (*_rW)
    #define rZ (*_rZ)

    #define rAF (*_rAF)
    #define rBC (*_rBC)
    #define rDE (*_rDE)
    #define rHL (*_rHL)
    #define rWZ (*_rWZ)

    #define rA2 (*_rA2)
    #define rF2 (*_rF2)
    #define rB2 (*_rB2)
    #define rC2 (*_rC2)
    #define rD2 (*_rD2)
    #define rE2 (*_rE2)
    #define rH2 (*_rH2)
    #define rL2 (*_rL2)

    #define rAF2 (*_rAF2)
    #define rBC2 (*_rBC2)
    #define rDE2 (*_rDE2)
    #define rHL2 (*_rHL2)

    #define rIXH (*_rIXH)
    #define rIXL (*_rIXL)
    #define rIYH (*_rIYH)
    #define rIYL (*_rIYL)
    #define rIX (*_rIX)
    #define rIY (*_rIY)
    #define rSP (*_rSP)

    #define rI (*_rI)
    #define rR (*_rR)

    #define rPC (*_rPC)

    #define SWAP(a,b) {auto temp=a;a=b;b=temp;}

    uint8_t READ_MEM_8(const uint16_t addr)
    {
        if (z80debug::isbreak(addr, 2)) z80debug::stop();
        t+=3;
        return memory[addr];
    }

    uint8_t READ_MEM_8()
    {
        return READ_MEM_8(rPC++);
    }

    uint8_t READ_M1()
    {
        t+=1;
        return READ_MEM_8();
    }

    uint16_t READ_MEM_16()
    {
        const uint8_t L = READ_MEM_8();
        const uint8_t H = READ_MEM_8();
        return (H << 8) + L;
    }

    uint16_t READ_MEM_16(const uint16_t addr)
    {
        return READ_MEM_8(addr) + (READ_MEM_8(addr+1) << 8);
    }

    const uint8_t WRITE_MEM_8(const uint16_t addr, const uint8_t value)
    {
        t+=3;
        if (addr>=0x4000) memory[addr] = value;
        if (z80debug::isbreak(addr, 4)) z80debug::stop();
        return value;
    }

    void WRITE_MEM_16(const uint16_t addr, const uint16_t value)
    {
        WRITE_MEM_8(addr, value & 0xff);
        WRITE_MEM_8(addr+1, (value>>8) & 0xff);
    }

    void PUSH(uint16_t b)
    {
        rSP-=2;
        WRITE_MEM_16(rSP, b);
        t+=1;
    }

    void POP(uint16_t *a)
    {
        *a = READ_MEM_16(rSP);
        rSP+=2;
    }

    inline void KEEP_FLAGS(const uint8_t flags)
    {
        rF &= flags;
    }

    inline void SET_FLAGS(const uint8_t flags)
    {
        rF |= flags;
    }

    inline void FLAGS_SZXY(const uint8_t value)
    {
        rF |= value ? value & fS : fZ;
        rF |= (value & (fY | fX));
    }

    inline void SET_PARITY_FLAG()
    {
        uint8_t count=0;
        uint8_t f = rF;
        while (f>0) { count+=(f&1); f=f>>1; }
        if (!(count&1)) rF |= fP;
    }

    void INC16(uint16_t *reg)
    {
        t+=2;
        (*reg)++;
    }

    void DEC16(uint16_t *reg)
    {
        t+=2;
        (*reg)--;
    }

    void ADD16(uint16_t* a, uint16_t b)
    {
        t++;
        const uint32_t res = *a + b;
        KEEP_FLAGS(fS | fZ | fV);
        SET_FLAGS(((*a ^ res ^ b) >> 8) & fH);
        SET_FLAGS((res >> 16) & fC);
        SET_FLAGS((res >> 8) & (fY | fX));
        *a = (uint16_t)res;
    }

    void ADC16(uint16_t* a, uint16_t b)
    {
        t++;
        const uint32_t res = *a + b + (rF & fC);
        rF=0;
        SET_FLAGS(((*a ^ res ^ b) >> 8) & fH);
        SET_FLAGS((res >> 16) & fC);
        SET_FLAGS((res >> 8) & (fS | fY | fX));
        SET_FLAGS((res & 0xffff) ? 0 : fZ);
        SET_FLAGS(((b ^ *a ^ 0x8000) & (b ^ res) & 0x8000) >> 13);
        *a = (uint16_t)res;
    }

    void SBC16(uint16_t* a, uint16_t b)
    {
        t++;
        const uint32_t res = *a - b - (rF & fC);
        rF = 0;
        SET_FLAGS(((*a ^ res ^ b) >> 8) & fH);
        SET_FLAGS(fN);
        SET_FLAGS((res >> 16) & fC);
        SET_FLAGS((res >> 8) & (fS | fY | fX));
        SET_FLAGS((res & 0xffff) ? 0 : fZ);
        SET_FLAGS(((b ^ *a) & (*a ^ res) & 0x8000) >> 13);
        *a = (uint16_t)res;
    }

    void INC8(uint8_t *reg)
    {
        uint8_t value = *reg + 1;

        KEEP_FLAGS(fC);
        FLAGS_SZXY(value);
        if (value == 0x80) SET_FLAGS(fV);
        if ( (value & 0x0f) == 0x00 ) SET_FLAGS(fH);

        *reg = value;
    }

    void DEC8(uint8_t *reg)
    {
        uint8_t value = *reg - 1;

        KEEP_FLAGS(fC);
        FLAGS_SZXY(value);
        SET_FLAGS(fN);
        if (value == 0x7f) SET_FLAGS(fV);
        if ( (value & 0x0f) == 0x0f ) SET_FLAGS(fH);

        *reg = value;
    }

    void INCMEM8(const uint16_t addr)
    {
        t++;
        uint8_t value = READ_MEM_8(addr);
        value++;

        KEEP_FLAGS(fC);
        FLAGS_SZXY(value);
        if (value == 0x80) SET_FLAGS(fV);
        if ( (value & 0x0f) == 0x00 ) SET_FLAGS(fH);

        WRITE_MEM_8(addr, value);
    }

    void DECMEM8(const uint16_t addr)
    {
        t+=1;
        uint8_t value = READ_MEM_8(addr);
        value--;

        KEEP_FLAGS(fC);
        FLAGS_SZXY(value);
        SET_FLAGS(fN);
        if (value == 0x7f) SET_FLAGS(fV);
        if ( (value & 0x0f) == 0x0f ) SET_FLAGS(fH);

        WRITE_MEM_8(addr, value);
    }

    void ADD8(uint8_t b)
    {
        const uint8_t res = rA + b;
        rF=0;
        FLAGS_SZXY(res);
        if ( (res & 0x0f) < (rA & 0x0f) ) SET_FLAGS(fH);
        if ( res < rA ) SET_FLAGS(fC);
        if ( (b^rA^0x80) & (b^res) & 0x80 ) SET_FLAGS(fV);
        rA = (uint8_t)res;
    }

    void ADC8(uint8_t b)
    {
        if (!(rF & fC))
            ADD8(b);
        else {
            uint16_t res = rA + b + 1;
            rF=0;
            FLAGS_SZXY(res);
            if ( (res & 0x0f) <= (rA & 0x0f) ) SET_FLAGS(fH);
            if ( res <= rA ) SET_FLAGS(fC);
            if ( (b^rA^0x80) & (b^res) & 0x80 ) SET_FLAGS(fV);
            rA = (uint8_t)res;
        }
    }

    void SUB8(uint8_t b, const bool update=true)
    {
        const uint8_t res = rA - b;
        rF=0;
        FLAGS_SZXY(res);
        SET_FLAGS(fN);
        if ( (res & 0x0f) > (rA & 0x0f) ) SET_FLAGS(fH);
        if ( res > rA ) SET_FLAGS(fC);
        if ( (b^rA) & (rA^res) & 0x80 ) SET_FLAGS(fV);
        if (update) rA = (uint8_t)res;
    }

    void SBC8(uint8_t b)
    {
        if (!(rF & fC))
            SUB8(b);
        else {
            const uint8_t res = rA - b - 1;
            rF=0;
            FLAGS_SZXY(res);
            SET_FLAGS(fN);
            if ( (res & 0x0f) >= (rA & 0x0f) ) SET_FLAGS(fH);
            if ( res >= rA ) SET_FLAGS(fC);
            if ( (b^rA) & (rA^res) & 0x80 ) SET_FLAGS(fV);
            rA = (uint8_t)res;
        }
    }

    void NEG()
    {
        uint8_t val = rA;
        rA = 0;
        SUB8(val);
    }

    void AND(uint8_t b)
    {
        rA = rA & b;
        rF=0;
        FLAGS_SZXY(rA);
        SET_PARITY_FLAG();
        SET_FLAGS(fH);
    }

    void XOR(uint8_t b)
    {
        rA = rA ^ b;
        rF=0;
        FLAGS_SZXY(rA);
        SET_PARITY_FLAG();
    }

    void OR(uint8_t b)
    {
        rA = rA | b;
        rF=0;
        FLAGS_SZXY(rA);
        SET_PARITY_FLAG();
    }

    void CP(uint8_t b)
    {
        SUB8(b, false);
    }

    void RLCA()
    {
        rA = (rA>>7) | (rA<<1);
        KEEP_FLAGS(fS | fZ | fP);
        SET_FLAGS(rA & (fX | fY | fC));
    }

    void RRCA()
    {
        rA = (rA<<7) | (rA>>1);
        KEEP_FLAGS(fS | fZ | fP);
        SET_FLAGS(rA & (fX | fY | fC));
    }

    void RLA()
    {
        rA = (rA<<1) | (rF&fC);
        KEEP_FLAGS(fS | fZ | fP);
        SET_FLAGS(rA & (fX | fY | fC));
    }

    void RRA()
    {
        rA = ((rF&fC)<<7) | (rA>>1);
        KEEP_FLAGS(fS | fZ | fP);
        SET_FLAGS(rA & (fX | fY | fC));
    }

    void RRD()
    {
        uint8_t a = rA;
        uint8_t hl = READ_MEM_8(rHL);
        rA = (rA & 0xF0) | (hl >> 4);
        hl = (hl<<4) | (a & 0X0F);
        WRITE_MEM_8(rHL, hl);
        KEEP_FLAGS(fC);
        FLAGS_SZXY(rA);
        SET_PARITY_FLAG();
        t+=4;
    }

    void RLD()
    {
        uint8_t a = rA;
        uint8_t hl = READ_MEM_8(rHL);
        rA = (rA & 0xF0) | (hl & 0x0F);
        hl = (hl >> 4) | (a << 4);
        WRITE_MEM_8(rHL, hl);
        KEEP_FLAGS(fC);
        FLAGS_SZXY(rA);
        SET_PARITY_FLAG();
        t+=4;
    }

    void DAA()
    {
        bool carry_set = false;
        uint8_t old = rA;
        if ( (rA & 0x0F)>9 || (rF & fH) ) rA += 0x06;
        if ( (rA >> 4)>9 || (rF & fC) ) { rA += 0x60; carry_set = true; }
        KEEP_FLAGS(fN);
        FLAGS_SZXY(rA);
        if ( (rA & 0x0F) < (old & 0x0F) ) SET_FLAGS(fH);
        if (carry_set) SET_FLAGS(fC);
        SET_PARITY_FLAG();
    }

    void CPL()
    {
        rA = ~rA;
        KEEP_FLAGS(fS | fZ | fP | fC);
        SET_FLAGS(fH | fN);
        SET_FLAGS(rA & (fX | fY));
    }

    void SCF()
    {
        KEEP_FLAGS( fS | fZ | fP );
        SET_FLAGS(fC);
        SET_FLAGS(rA & (fX | fY));
    }

    void CCF()
    {
        const bool carry = (rF & fC);
        KEEP_FLAGS( fS | fZ | fP );
        SET_FLAGS(carry ? fH : fC);
        SET_FLAGS(rA & (fX | fY));
    }

    void DJNZ()
    {
        const int8_t d = (int8_t)READ_MEM_8();
        rB--;
        if (rB==0)
        {
            rPC = rPC + d;
            t+=5;
        }
    }

    void JR(uint8_t cond = cNO)
    {
        const int8_t d = (int8_t)READ_MEM_8();
        if (   cond == cNO ||
            ( (cond == cNZ) && !(rF & fZ) ) ||
            ( (cond == cZ)  &&  (rF & fZ) ) ||
            ( (cond == cNC) && !(rF & fC) ) ||
            ( (cond == cC)  &&  (rF & fC) ) )
        {
            rPC = rPC + d;
            t+=5;
        }
    }

    void JP(uint8_t cond, uint16_t addr)
    {
        if (   cond == cNO ||
            ( (cond == cNZ) && !(rF & fZ) ) ||
            ( (cond == cZ)  &&  (rF & fZ) ) ||
            ( (cond == cNC) && !(rF & fC) ) ||
            ( (cond == cC)  &&  (rF & fC) ) ||
            ( (cond == cPO) && !(rF & fV) ) ||
            ( (cond == cPE) &&  (rF & fV) ) ||
            ( (cond == cM)  &&  (rF & fS) ) ||
            ( (cond == cP)  && !(rF & fS) )  )
            rPC = addr;
    }

    void CALL(uint8_t cond, uint16_t addr)
    {
        if (   cond == cNO ||
            ( (cond == cNZ) && !(rF & fZ) ) ||
            ( (cond == cZ)  &&  (rF & fZ) ) ||
            ( (cond == cNC) && !(rF & fC) ) ||
            ( (cond == cC)  &&  (rF & fC) ) ||
            ( (cond == cPO) && !(rF & fV) ) ||
            ( (cond == cPE) &&  (rF & fV) ) ||
            ( (cond == cM)  &&  (rF & fS) ) ||
            ( (cond == cP)  && !(rF & fS) )  )
        {
            PUSH(rPC);
            rPC = addr;
        }
    }

    void RET(uint8_t cond)
    {
        if (   cond == cNO ||
            ( (cond == cNZ) && !(rF & fZ) ) ||
            ( (cond == cZ)  &&  (rF & fZ) ) ||
            ( (cond == cNC) && !(rF & fC) ) ||
            ( (cond == cC)  &&  (rF & fC) ) ||
            ( (cond == cPO) && !(rF & fV) ) ||
            ( (cond == cPE) &&  (rF & fV) ) ||
            ( (cond == cM)  &&  (rF & fS) ) ||
            ( (cond == cP)  && !(rF & fS) )  )
        {
            POP(_rPC);
            if (cond != cNO) t++;
        } else {
            t++;
        }
    }

    void RETN()
    {
        POP(_rPC);
        iff1 = iff2;
    }

    void RETI()
    {
        RETN();
    }

    void interrupt()
    {
        if (!iff1) return;
        PUSH(rPC);
        rPC = 0x38;
    }

    void RST(uint8_t vec)
    {
        PUSH(rPC);
        rPC = vec;
    }

    void IM(uint8_t mode)
    {
        im = mode;
    }

    void EX_MEM(uint16_t *reg, uint16_t addr)
    {
        auto temp = *reg;
        *reg = READ_MEM_16(addr);
        WRITE_MEM_16(addr, temp);
        t+=3;
    }

    void DI()
    {
        iff1 = iff2 = 0;
    }

    void EI()
    {
        iff1 = iff2 = 1;
    }

    void HALT()
    {
        printf("HALT\n");
        rPC--;
    }

    static inline const uint8_t RLC(const uint8_t v)
    {
        const uint8_t res = (v>>7) | (v<<1);
        rF=0;
        FLAGS_SZXY(res);
        if (res&1) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t RRC(const uint8_t v)
    {
        const uint8_t res = (v<<7) | (v>>1);
        rF=0;
        FLAGS_SZXY(res);
        if (res&0x80) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t RL(const uint8_t v)
    {
        const uint8_t res = (v<<1) | (rF&fC);
        rF=0;
        FLAGS_SZXY(res);
        if (v&0x80) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t RR(const uint8_t v)
    {
        const uint8_t res = ((rF&fC)<<7) | (v>>1);
        rF=0;
        FLAGS_SZXY(res);
        if (v&1) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t SLA(const uint8_t v)
    {
        const uint8_t res = (v<<1);
        rF=0;
        FLAGS_SZXY(res);
        if (v&0x80) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t SRA(const uint8_t v)
    {
        const uint8_t res = (v&0x80) | (v>>1);
        rF=0;
        FLAGS_SZXY(res);
        if (v&1) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t SLL(const uint8_t v)
    {
        const uint8_t res = (v<<1) & 1;
        rF=0;
        FLAGS_SZXY(res);
        if (v&0x80) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    static inline const uint8_t SRL(const uint8_t v)
    {
        const uint8_t res = (v>>1);
        rF=0;
        FLAGS_SZXY(res);
        if (v&1) SET_FLAGS(fC);
        SET_PARITY_FLAG();
        return res;
    }

    void BIT(uint8_t pos, uint8_t v)
    {
        const uint8_t res = v & 1<<pos;
        KEEP_FLAGS(fC);
        SET_FLAGS(fH);
        if (!res) SET_FLAGS(fZ | fP);
        if (res&0x80) SET_FLAGS(fS);
        if (res&0x20) SET_FLAGS(fY);
        if (res&0x08) SET_FLAGS(fX);
    }

    static inline const uint8_t SET(uint8_t pos, const uint8_t v)
    {
        return v | (1<<pos);
    }

    static inline const uint8_t RES(uint8_t pos, const uint8_t v)
    {
        return v & ~(1<<pos);
    }

    void LDI()
    {
        WRITE_MEM_8(rDE, READ_MEM_8(rHL));
        rDE++;
        rHL++;
        rBC--;
        t+=2;
        KEEP_FLAGS(fS | fZ | fC);
        if (rBC!=0) SET_FLAGS(fP);
    }

    void LDIR()
    {
        LDI();
        if (rBC!=0)
        {
            rPC-=2;
            t+=5;
        }
    }

    void LDD()
    {
        WRITE_MEM_8(rDE, READ_MEM_8(rHL));
        rDE--;
        rHL--;
        rBC--;
        t+=2;
        KEEP_FLAGS(fS | fZ | fC);
        if (rBC!=0) SET_FLAGS(fP);
    }

    void LDDR()
    {
        LDD();
        if (rBC!=0)
        {
            rPC-=2;
            t+=5;
        }
    }

    void CPI()
    {
        uint8_t old_fC = rF & fC;
        CP(READ_MEM_8(rHL));
        rHL++;
        rBC--;
        t+=2;
        rF = (rF & 0xFD) | old_fC;
        if (rBC!=0) SET_FLAGS(fP);
        if (READ_MEM_8(rHL)==rA) SET_FLAGS(fZ);
    }

    void CPIR()
    {
        CPI();
        if (rBC!=0 && READ_MEM_8(rHL)!=rA)
        {
            rPC-=2;
            t+=2;
        }
    }

    void CPD()
    {
        uint8_t old_fC = rF & fC;
        CP(READ_MEM_8(rHL));
        rHL--;
        rBC--;
        t+=2;
        rF = (rF & 0xFD) | old_fC;
        if (rBC!=0) SET_FLAGS(fP);
        if (READ_MEM_8(rHL)==rA) SET_FLAGS(fZ);
    }
    
    void CPDR()
    {
        CPD();
        if (rBC!=0 && READ_MEM_8(rHL)!=rA)
        {
            rPC-=2;
            t+=2;
        }
    }

    const uint8_t IN(int port = 256)
    {
        t+=4;
        if (port == 256) {
            port = rC;
            // [TODO] set flags acordingly
        } else {
            // don't touch flags
        }
        if (in_ports[port])
            return (uint8_t)in_ports[port]();
        else
            return 0x00;
    }

    void OUT(uint8_t val, int port = 256)
    {
        t+=4;
        if (port == 256) {
            port = rC;
        }
        if (out_ports[port]) out_ports[port](val);
    }

    void INI()
    {
        WRITE_MEM_8(rHL, IN());
        rHL++;
        DEC8(_rB);
        t+=5;
    }

    void INIR()
    {
        INI();
        if (rB!=0)
        {
            rPC-=2;
            t+=5;
        }
    }

    void IND()
    {
        WRITE_MEM_8(rHL, IN());
        rHL--;
        DEC8(_rB);
        t+=5;
    }

    void INDR()
    {
        IND();
        if (rB!=0)
        {
            rPC-=2;
            t+=5;
        }
    }

    void OUTI()
    {
        OUT(READ_MEM_8(rHL));
        rHL++;
        DEC8(_rB);
        t+=5;
    }

    void OUTIR()
    {
        OUTI();
        if (rB!=0)
        {
            rPC-=2;
            t+=5;
        }
    }

    void OUTD() {
        OUT(READ_MEM_8(rHL));
        rHL--;
        DEC8(_rB);
        t+=5;
    }

    void OUTDR() {
        OUTD();
        if (rB!=0)
        {
            rPC-=2;
            t+=5;
        }
    }

    void INVALID()
    {
        // [TODO]
        printf("INVALID\n");
    }

    void reset(uint8_t* mem)
    {
        memory = mem;
        rPC = iff1 = iff2 = im = 0;
        rAF = rAF2 = rBC = rBC2 = rDE = rDE2 = rHL = rHL2 = rIX = rIY = rSP = 0xffff;
        t = 0;
        for (int i=0; i<256; ++i)
        {
            in_ports[i] = nullptr;
            out_ports[i] = nullptr;
        }
    }

    void BIT_INSTRUCTIONS();
    void IX_INSTRUCTIONS();
    void IX_BIT_INSTRUCTIONS();
    void MISC_INSTRUCTIONS();
    void IY_INSTRUCTIONS();
    void IY_BIT_INSTRUCTIONS();

    void connect_port(int num, int (*in_ptr)(), void (*out_ptr)(int))
    {
        if (in_ptr) in_ports[num] = in_ptr;
        if (out_ptr) out_ports[num] = out_ptr;
    }

    uint32_t step()
    {
        t = 0;
        const uint8_t opcode = READ_M1();
        uint16_t tmp;

        switch (opcode)
        {
            case 0x00: /* NOP */                        break;
            case 0x01: rBC = READ_MEM_16();             break;
            case 0x02: WRITE_MEM_8(rBC, rA);            break;
            case 0x03: INC16(_rBC);                     break;
            case 0x04: INC8(_rB);                       break;
            case 0x05: DEC8(_rB);                       break;
            case 0x06: rB = READ_MEM_8();               break;
            case 0x07: RLCA();                          break;
            case 0x08: SWAP(rAF, rAF2);                 break;
            case 0x09: ADD16(_rHL, rBC);                break;
            case 0x0A: rA = READ_MEM_8(rBC);            break;
            case 0x0B: DEC16(_rBC);                     break;
            case 0x0C: INC8(_rC);                       break;
            case 0x0D: DEC8(_rC);                       break;
            case 0x0E: rC = READ_MEM_8();               break;
            case 0x0F: RRCA();                          break;

            case 0x10: DJNZ();                          break;
            case 0x11: rDE = READ_MEM_16();             break;
            case 0x12: WRITE_MEM_8(rDE, rA);            break;
            case 0x13: INC16(_rDE);                     break;
            case 0x14: INC8(_rD);                       break;
            case 0x15: DEC8(_rD);                       break;
            case 0x16: rD = READ_MEM_8();               break;
            case 0x17: RLA();                           break;
            case 0x18: JR();                            break;
            case 0x19: ADD16(_rHL, rDE);                break;
            case 0x1A: rA = READ_MEM_8(rDE);            break;
            case 0x1B: DEC16(_rDE);                     break;
            case 0x1C: INC8(_rE);                       break;
            case 0x1D: DEC8(_rE);                       break;
            case 0x1E: rE = READ_MEM_8();               break;
            case 0x1F: RRA();                           break;

            case 0x20: JR(cNZ);                         break;
            case 0x21: rHL = READ_MEM_16();             break;
            case 0x22: WRITE_MEM_16(READ_MEM_16(), rHL);break;
            case 0x23: INC16(_rHL);                     break;
            case 0x24: INC8(_rH);                       break;
            case 0x25: DEC8(_rH);                       break;
            case 0x26: rH = READ_MEM_8();               break;
            case 0x27: DAA();                           break;
            case 0x28: JR(cZ);                          break;
            case 0x29: ADD16(_rHL, rHL);                break;
            case 0x2A: rHL = READ_MEM_16(READ_MEM_16());break;
            case 0x2B: DEC16(_rHL);                     break;
            case 0x2C: INC8(_rL);                       break;
            case 0x2D: DEC8(_rL);                       break;
            case 0x2E: rL = READ_MEM_8();               break;
            case 0x2F: CPL();                           break;

            case 0x30: JR(cNC);                         break;
            case 0x31: rSP = READ_MEM_16();             break;
            case 0x32: WRITE_MEM_8(READ_MEM_16(), rA);  break;
            case 0x33: INC16(_rSP);                     break;
            case 0x34: INCMEM8(rHL);                    break;
            case 0x35: DECMEM8(rHL);                    break;
            case 0x36: WRITE_MEM_8(rHL, READ_MEM_8());  break;
            case 0x37: SCF();                           break;
            case 0x38: JR(cC);                          break;
            case 0x39: ADD16(_rHL, rSP);                break;
            case 0x3A: rA = READ_MEM_8(READ_MEM_16());  break;
            case 0x3B: DEC16(_rSP);                     break;
            case 0x3C: INC8(_rA);                       break;
            case 0x3D: DEC8(_rA);                       break;
            case 0x3E: rA = READ_MEM_8();               break;
            case 0x3F: CCF();                           break;

            case 0x40: rB = rB;                         break;
            case 0x41: rB = rC;                         break;
            case 0x42: rB = rD;                         break;
            case 0x43: rB = rE;                         break;
            case 0x44: rB = rH;                         break;
            case 0x45: rB = rL;                         break;
            case 0x46: rB = READ_MEM_8(rHL);            break;
            case 0x47: rB = rA;                         break;
            case 0x48: rC = rB;                         break;
            case 0x49: rC = rC;                         break;
            case 0x4A: rC = rD;                         break;
            case 0x4B: rC = rE;                         break;
            case 0x4C: rC = rH;                         break;
            case 0x4D: rC = rL;                         break;
            case 0x4E: rC = READ_MEM_8(rHL);            break;
            case 0x4F: rC = rA;                         break;

            case 0x50: rD = rB;                         break;
            case 0x51: rD = rC;                         break;
            case 0x52: rD = rD;                         break;
            case 0x53: rD = rE;                         break;
            case 0x54: rD = rH;                         break;
            case 0x55: rD = rL;                         break;
            case 0x56: rD = READ_MEM_8(rHL);            break;
            case 0x57: rD = rA;                         break;
            case 0x58: rE = rB;                         break;
            case 0x59: rE = rC;                         break;
            case 0x5A: rE = rD;                         break;
            case 0x5B: rE = rE;                         break;
            case 0x5C: rE = rH;                         break;
            case 0x5D: rE = rL;                         break;
            case 0x5E: rE = READ_MEM_8(rHL);            break;
            case 0x5F: rE = rA;                         break;
            
            case 0x60: rH = rB;                         break;
            case 0x61: rH = rC;                         break;
            case 0x62: rH = rD;                         break;
            case 0x63: rH = rE;                         break;
            case 0x64: rH = rH;                         break;
            case 0x65: rH = rL;                         break;
            case 0x66: rH = READ_MEM_8(rHL);            break;
            case 0x67: rH = rA;                         break;
            case 0x68: rL = rB;                         break;
            case 0x69: rL = rC;                         break;
            case 0x6A: rL = rD;                         break;
            case 0x6B: rL = rE;                         break;
            case 0x6C: rL = rH;                         break;
            case 0x6D: rL = rL;                         break;
            case 0x6E: rL = READ_MEM_8(rHL);            break;
            case 0x6F: rL = rA;                         break;
            
            case 0x70: WRITE_MEM_8(rHL, rB);            break;
            case 0x71: WRITE_MEM_8(rHL, rC);            break;
            case 0x72: WRITE_MEM_8(rHL, rD);            break;
            case 0x73: WRITE_MEM_8(rHL, rE);            break;
            case 0x74: WRITE_MEM_8(rHL, rH);            break;
            case 0x75: WRITE_MEM_8(rHL, rL);            break;
            case 0x76: HALT();                          break;
            case 0x77: WRITE_MEM_8(rHL, rA);            break;
            case 0x78: rA = rB;                         break;
            case 0x79: rA = rC;                         break;
            case 0x7A: rA = rD;                         break;
            case 0x7B: rA = rE;                         break;
            case 0x7C: rA = rH;                         break;
            case 0x7D: rA = rL;                         break;
            case 0x7E: rA = READ_MEM_8(rHL);            break;
            case 0x7F: rA = rA;                         break;
            
            case 0x80: ADD8(rB);                        break;
            case 0x81: ADD8(rC);                        break;
            case 0x82: ADD8(rD);                        break;
            case 0x83: ADD8(rE);                        break;
            case 0x84: ADD8(rH);                        break;
            case 0x85: ADD8(rL);                        break;
            case 0x86: ADD8(READ_MEM_8(rHL));           break;
            case 0x87: ADD8(rA);                        break;
            case 0x88: ADC8(rB);                        break;
            case 0x89: ADC8(rC);                        break;
            case 0x8A: ADC8(rD);                        break;
            case 0x8B: ADC8(rE);                        break;
            case 0x8C: ADC8(rH);                        break;
            case 0x8D: ADC8(rL);                        break;
            case 0x8E: ADC8(READ_MEM_8(rHL));           break;
            case 0x8F: ADC8(rA);                        break;

            case 0x90: SUB8(rB);                        break;
            case 0x91: SUB8(rC);                        break;
            case 0x92: SUB8(rD);                        break;
            case 0x93: SUB8(rE);                        break;
            case 0x94: SUB8(rH);                        break;
            case 0x95: SUB8(rL);                        break;
            case 0x96: SUB8(READ_MEM_8(rHL));           break;
            case 0x97: SUB8(rA);                        break;
            case 0x98: SBC8(rB);                        break;
            case 0x99: SBC8(rC);                        break;
            case 0x9A: SBC8(rD);                        break;
            case 0x9B: SBC8(rE);                        break;
            case 0x9C: SBC8(rH);                        break;
            case 0x9D: SBC8(rL);                        break;
            case 0x9E: SBC8(READ_MEM_8(rHL));           break;
            case 0x9F: SBC8(rA);                        break;

            case 0xA0: AND(rB);                         break;
            case 0xA1: AND(rC);                         break;
            case 0xA2: AND(rD);                         break;
            case 0xA3: AND(rE);                         break;
            case 0xA4: AND(rH);                         break;
            case 0xA5: AND(rL);                         break;
            case 0xA6: AND(READ_MEM_8(rHL));            break;
            case 0xA7: AND(rA);                         break;
            case 0xA8: XOR(rB);                         break;
            case 0xA9: XOR(rC);                         break;
            case 0xAA: XOR(rD);                         break;
            case 0xAB: XOR(rE);                         break;
            case 0xAC: XOR(rH);                         break;
            case 0xAD: XOR(rL);                         break;
            case 0xAE: XOR(READ_MEM_8(rHL));            break;
            case 0xAF: XOR(rA);                         break;

            case 0xB0: OR(rB);                          break;
            case 0xB1: OR(rC);                          break;
            case 0xB2: OR(rD);                          break;
            case 0xB3: OR(rE);                          break;
            case 0xB4: OR(rH);                          break;
            case 0xB5: OR(rL);                          break;
            case 0xB6: OR(READ_MEM_8(rHL));             break;
            case 0xB7: OR(rA);                          break;
            case 0xB8: CP(rB);                          break;
            case 0xB9: CP(rC);                          break;
            case 0xBA: CP(rD);                          break;
            case 0xBB: CP(rE);                          break;
            case 0xBC: CP(rH);                          break;
            case 0xBD: CP(rL);                          break;
            case 0xBE: CP(READ_MEM_8(rHL));             break;
            case 0xBF: CP(rA);                          break;

            case 0xC0: RET(cNZ);                        break;
            case 0xC1: POP(_rBC);                       break;
            case 0xC2: JP(cNZ, READ_MEM_16());          break;
            case 0xC3: JP(cNO, READ_MEM_16());          break;
            case 0xC4: CALL(cNZ, READ_MEM_16());        break;
            case 0xC5: PUSH(rBC);                       break;
            case 0xC6: ADD8(READ_MEM_8());              break;
            case 0xC7: RST(0x00);                       break;
            case 0xC8: RET(cZ);                         break;
            case 0xC9: RET(cNO);                        break;
            case 0xCA: JP(cZ, READ_MEM_16());           break;
            case 0xCB: BIT_INSTRUCTIONS();              break;
            case 0xCC: CALL(cZ, READ_MEM_16());         break;
            case 0xCD: CALL(cNO, READ_MEM_16());        break;
            case 0xCE: ADC8(READ_MEM_8());              break;
            case 0xCF: RST(0x08);                       break;

            case 0xD0: RET(cNC);                        break;
            case 0xD1: POP(_rDE);                       break;
            case 0xD2: JP(cNC, READ_MEM_16());          break;
            case 0xD3: OUT(rA, READ_MEM_8());           break;
            case 0xD4: CALL(cNC, READ_MEM_16());        break;
            case 0xD5: PUSH(rDE);                       break;
            case 0xD6: SUB8(READ_MEM_8());              break;
            case 0xD7: RST(0x10);                       break;
            case 0xD8: RET(cC);                         break;
            case 0xD9: SWAP(rBC, rBC2);SWAP(rDE, rDE2);SWAP(rHL, rHL2); break;
            case 0xDA: JP(cC, READ_MEM_16());           break;
            case 0xDB: rA = IN(READ_MEM_8());           break;
            case 0xDC: CALL(cC, READ_MEM_16());         break;
            case 0xDD: IX_INSTRUCTIONS();               break;
            case 0xDE: SBC8(READ_MEM_8());              break;
            case 0xDF: RST(0x18);                       break;

            case 0xE0: RET(cPO);                        break;
            case 0xE1: POP(_rHL);                       break;
            case 0xE2: JP(cPO, READ_MEM_16());          break;
            case 0xE3: EX_MEM(_rHL, rSP);               break;
            case 0xE4: CALL(cPO, READ_MEM_16());        break;
            case 0xE5: PUSH(rHL);                       break;
            case 0xE6: AND(READ_MEM_8());               break;
            case 0xE7: RST(0x20);                       break;
            case 0xE8: RET(cPE);                        break;
            case 0xE9: JP(cNO, rHL);                    break;
            case 0xEA: JP(cPE, READ_MEM_16());          break;
            case 0xEB: SWAP(rDE, rHL);                  break;
            case 0xEC: CALL(cPE, READ_MEM_16());        break;
            case 0xED: MISC_INSTRUCTIONS();             break;
            case 0xEE: XOR(READ_MEM_8());               break;
            case 0xEF: RST(0x28);                       break;

            case 0xF0: RET(cP);                         break;
            case 0xF1: POP(_rAF);                       break;
            case 0xF2: JP(cP, READ_MEM_16());           break;
            case 0xF3: DI();                            break;
            case 0xF4: CALL(cP, READ_MEM_16());         break;
            case 0xF5: PUSH(rAF);                       break;
            case 0xF6: OR(READ_MEM_8());                break;
            case 0xF7: RST(0x30);                       break;
            case 0xF8: RET(cM);                         break;
            case 0xF9: rSP = rHL; t+=2;                 break;
            case 0xFA: JP(cM, READ_MEM_16());           break;
            case 0xFB: EI();                            break;
            case 0xFC: CALL(cM, READ_MEM_16());         break;
            case 0xFD: IY_INSTRUCTIONS();               break;
            case 0xFE: CP(READ_MEM_8());                break;
            case 0xFF: RST(0x38);                       break;
        }
        return t;
    }

    void BIT_INSTRUCTIONS()
    {
        const uint8_t opcode = READ_M1();
        switch (opcode)
        {
            case 0x00: rB = RLC(rB);                            break;
            case 0x01: rC = RLC(rC);                            break;
            case 0x02: rD = RLC(rD);                            break;
            case 0x03: rE = RLC(rE);                            break;
            case 0x04: rH = RLC(rH);                            break;
            case 0x05: rL = RLC(rL);                            break;
            case 0x06: WRITE_MEM_8(rHL, RLC(READ_MEM_8(rHL)));t++;break;
            case 0x07: rA = RLC(rA);                            break;
            case 0x08: rB = RRC(rB);                            break;
            case 0x09: rC = RRC(rC);                            break;
            case 0x0A: rD = RRC(rD);                            break;
            case 0x0B: rE = RRC(rE);                            break;
            case 0x0C: rH = RRC(rH);                            break;
            case 0x0D: rL = RRC(rL);                            break;
            case 0x0E: WRITE_MEM_8(rHL, RRC(READ_MEM_8(rHL)));t++;break;
            case 0x0F: rA = RRC(rA);                            break;

            case 0x10: rB = RL(rB);                             break;
            case 0x11: rC = RL(rC);                             break;
            case 0x12: rD = RL(rD);                             break;
            case 0x13: rE = RL(rE);                             break;
            case 0x14: rH = RL(rH);                             break;
            case 0x15: rL = RL(rL);                             break;
            case 0x16: WRITE_MEM_8(rHL, RL(READ_MEM_8(rHL)));t++;break;
            case 0x17: rA = RL(rA);                             break;
            case 0x18: rB = RR(rB);                             break;
            case 0x19: rC = RR(rC);                             break;
            case 0x1A: rD = RR(rD);                             break;
            case 0x1B: rE = RR(rE);                             break;
            case 0x1C: rH = RR(rH);                             break;
            case 0x1D: rL = RR(rL);                             break;
            case 0x1E: WRITE_MEM_8(rHL, RR(READ_MEM_8(rHL)));t++;break;
            case 0x1F: rA = RR(rA);                             break;

            case 0x20: rB = SLA(rB);                            break;
            case 0x21: rC = SLA(rC);                            break;
            case 0x22: rD = SLA(rD);                            break;
            case 0x23: rE = SLA(rE);                            break;
            case 0x24: rH = SLA(rH);                            break;
            case 0x25: rL = SLA(rL);                            break;
            case 0x26: WRITE_MEM_8(rHL, SLA(READ_MEM_8(rHL)));t++;break;
            case 0x27: rA = SLA(rA);                            break;
            case 0x28: rB = SRA(rB);                            break;
            case 0x29: rC = SRA(rC);                            break;
            case 0x2A: rD = SRA(rD);                            break;
            case 0x2B: rE = SRA(rE);                            break;
            case 0x2C: rH = SRA(rH);                            break;
            case 0x2D: rL = SRA(rL);                            break;
            case 0x2E: WRITE_MEM_8(rHL, SRA(READ_MEM_8(rHL)));t++;break;
            case 0x2F: rA = SRA(rA);                            break;

            case 0x30: rB = SLL(rB);                            break;
            case 0x31: rC = SLL(rC);                            break;
            case 0x32: rD = SLL(rD);                            break;
            case 0x33: rE = SLL(rE);                            break;
            case 0x34: rH = SLL(rH);                            break;
            case 0x35: rL = SLL(rL);                            break;
            case 0x36: WRITE_MEM_8(rHL, SLL(READ_MEM_8(rHL)));t++;break;
            case 0x37: rA = SLL(rA);                            break;
            case 0x38: rB = SRL(rB);                            break;
            case 0x39: rC = SRL(rC);                            break;
            case 0x3A: rD = SRL(rD);                            break;
            case 0x3B: rE = SRL(rE);                            break;
            case 0x3C: rH = SRL(rH);                            break;
            case 0x3D: rL = SRL(rL);                            break;
            case 0x3E: WRITE_MEM_8(rHL, SRL(READ_MEM_8(rHL)));t++;break;
            case 0x3F: rA = SRL(rA);                            break;

            case 0x40: BIT(0, rB);                              break;
            case 0x41: BIT(0, rC);                              break;
            case 0x42: BIT(0, rD);                              break;
            case 0x43: BIT(0, rE);                              break;
            case 0x44: BIT(0, rH);                              break;
            case 0x45: BIT(0, rL);                              break;
            case 0x46: BIT(0, READ_MEM_8(rHL)); t++;            break;
            case 0x47: BIT(0, rA);                              break;
            case 0x48: BIT(1, rB);                              break;
            case 0x49: BIT(1, rC);                              break;
            case 0x4A: BIT(1, rD);                              break;
            case 0x4B: BIT(1, rE);                              break;
            case 0x4C: BIT(1, rH);                              break;
            case 0x4D: BIT(1, rL);                              break;
            case 0x4E: BIT(1, READ_MEM_8(rHL)); t++;            break;
            case 0x4F: BIT(1, rA);                              break;

            case 0x50: BIT(2, rB);                              break;
            case 0x51: BIT(2, rC);                              break;
            case 0x52: BIT(2, rD);                              break;
            case 0x53: BIT(2, rE);                              break;
            case 0x54: BIT(2, rH);                              break;
            case 0x55: BIT(2, rL);                              break;
            case 0x56: BIT(2, READ_MEM_8(rHL)); t++;            break;
            case 0x57: BIT(2, rA);                              break;
            case 0x58: BIT(3, rB);                              break;
            case 0x59: BIT(3, rC);                              break;
            case 0x5A: BIT(3, rD);                              break;
            case 0x5B: BIT(3, rE);                              break;
            case 0x5C: BIT(3, rH);                              break;
            case 0x5D: BIT(3, rL);                              break;
            case 0x5E: BIT(3, READ_MEM_8(rHL)); t++;            break;
            case 0x5F: BIT(3, rA);                              break;

            case 0x60: BIT(4, rB);                              break;
            case 0x61: BIT(4, rC);                              break;
            case 0x62: BIT(4, rD);                              break;
            case 0x63: BIT(4, rE);                              break;
            case 0x64: BIT(4, rH);                              break;
            case 0x65: BIT(4, rL);                              break;
            case 0x66: BIT(4, READ_MEM_8(rHL)); t++;            break;
            case 0x67: BIT(4, rA);                              break;
            case 0x68: BIT(5, rB);                              break;
            case 0x69: BIT(5, rC);                              break;
            case 0x6A: BIT(5, rD);                              break;
            case 0x6B: BIT(5, rE);                              break;
            case 0x6C: BIT(5, rH);                              break;
            case 0x6D: BIT(5, rL);                              break;
            case 0x6E: BIT(5, READ_MEM_8(rHL)); t++;            break;
            case 0x6F: BIT(5, rA);                              break;

            case 0x70: BIT(6, rB);                              break;
            case 0x71: BIT(6, rC);                              break;
            case 0x72: BIT(6, rD);                              break;
            case 0x73: BIT(6, rE);                              break;
            case 0x74: BIT(6, rH);                              break;
            case 0x75: BIT(6, rL);                              break;
            case 0x76: BIT(6, READ_MEM_8(rHL)); t++;            break;
            case 0x77: BIT(6, rA);                              break;
            case 0x78: BIT(7, rB);                              break;
            case 0x79: BIT(7, rC);                              break;
            case 0x7A: BIT(7, rD);                              break;
            case 0x7B: BIT(7, rE);                              break;
            case 0x7C: BIT(7, rH);                              break;
            case 0x7D: BIT(7, rL);                              break;
            case 0x7E: BIT(7, READ_MEM_8(rHL)); t++;            break;
            case 0x7F: BIT(7, rA);                              break;

            case 0x80: rB = RES(0, rB);                         break;
            case 0x81: rC = RES(0, rC);                         break;
            case 0x82: rD = RES(0, rD);                         break;
            case 0x83: rE = RES(0, rE);                         break;
            case 0x84: rH = RES(0, rH);                         break;
            case 0x85: rL = RES(0, rL);                         break;
            case 0x86: WRITE_MEM_8(rHL, RES(0, READ_MEM_8(rHL)));t++;break;
            case 0x87: rA = RES(0, rA);                         break;
            case 0x88: rB = RES(1, rB);                         break;
            case 0x89: rC = RES(1, rC);                         break;
            case 0x8A: rD = RES(1, rD);                         break;
            case 0x8B: rE = RES(1, rE);                         break;
            case 0x8C: rH = RES(1, rH);                         break;
            case 0x8D: rL = RES(1, rL);                         break;
            case 0x8E: WRITE_MEM_8(rHL, RES(1, READ_MEM_8(rHL)));t++;break;
            case 0x8F: rA = RES(1, rA);                         break;

            case 0x90: rB = RES(2, rB);                         break;
            case 0x91: rC = RES(2, rC);                         break;
            case 0x92: rD = RES(2, rD);                         break;
            case 0x93: rE = RES(2, rE);                         break;
            case 0x94: rH = RES(2, rH);                         break;
            case 0x95: rL = RES(2, rL);                         break;
            case 0x96: WRITE_MEM_8(rHL, RES(2, READ_MEM_8(rHL)));t++;break;
            case 0x97: rA = RES(2, rA);                         break;
            case 0x98: rB = RES(3, rB);                         break;
            case 0x99: rC = RES(3, rC);                         break;
            case 0x9A: rD = RES(3, rD);                         break;
            case 0x9B: rE = RES(3, rE);                         break;
            case 0x9C: rH = RES(3, rH);                         break;
            case 0x9D: rL = RES(3, rL);                         break;
            case 0x9E: WRITE_MEM_8(rHL, RES(3, READ_MEM_8(rHL)));t++;break;
            case 0x9F: rA = RES(3, rA);                         break;

            case 0xA0: rB = RES(4, rB);                         break;
            case 0xA1: rC = RES(4, rC);                         break;
            case 0xA2: rD = RES(4, rD);                         break;
            case 0xA3: rE = RES(4, rE);                         break;
            case 0xA4: rH = RES(4, rH);                         break;
            case 0xA5: rL = RES(4, rL);                         break;
            case 0xA6: WRITE_MEM_8(rHL, RES(4, READ_MEM_8(rHL)));t++;break;
            case 0xA7: rA = RES(4, rA);                         break;
            case 0xA8: rB = RES(5, rB);                         break;
            case 0xA9: rC = RES(5, rC);                         break;
            case 0xAA: rD = RES(5, rD);                         break;
            case 0xAB: rE = RES(5, rE);                         break;
            case 0xAC: rH = RES(5, rH);                         break;
            case 0xAD: rL = RES(5, rL);                         break;
            case 0xAE: WRITE_MEM_8(rHL, RES(5, READ_MEM_8(rHL)));t++;break;
            case 0xAF: rA = RES(5, rA);                         break;

            case 0xB0: rB = RES(6, rB);                         break;
            case 0xB1: rC = RES(6, rC);                         break;
            case 0xB2: rD = RES(6, rD);                         break;
            case 0xB3: rE = RES(6, rE);                         break;
            case 0xB4: rH = RES(6, rH);                         break;
            case 0xB5: rL = RES(6, rL);                         break;
            case 0xB6: WRITE_MEM_8(rHL, RES(6, READ_MEM_8(rHL)));t++;break;
            case 0xB7: rA = RES(6, rA);                         break;
            case 0xB8: rB = RES(7, rB);                         break;
            case 0xB9: rC = RES(7, rC);                         break;
            case 0xBA: rD = RES(7, rD);                         break;
            case 0xBB: rE = RES(7, rE);                         break;
            case 0xBC: rH = RES(7, rH);                         break;
            case 0xBD: rL = RES(7, rL);                         break;
            case 0xBE: WRITE_MEM_8(rHL, RES(7, READ_MEM_8(rHL)));t++;break;
            case 0xBF: rA = RES(7, rA);                         break;

            case 0xC0: rB = SET(0, rB);                         break;
            case 0xC1: rC = SET(0, rC);                         break;
            case 0xC2: rD = SET(0, rD);                         break;
            case 0xC3: rE = SET(0, rE);                         break;
            case 0xC4: rH = SET(0, rH);                         break;
            case 0xC5: rL = SET(0, rL);                         break;
            case 0xC6: WRITE_MEM_8(rHL, SET(0, READ_MEM_8(rHL)));t++;break;
            case 0xC7: rA = SET(0, rA);                         break;
            case 0xC8: rB = SET(1, rB);                         break;
            case 0xC9: rC = SET(1, rC);                         break;
            case 0xCA: rD = SET(1, rD);                         break;
            case 0xCB: rE = SET(1, rE);                         break;
            case 0xCC: rH = SET(1, rH);                         break;
            case 0xCD: rL = SET(1, rL);                         break;
            case 0xCE: WRITE_MEM_8(rHL, SET(1, READ_MEM_8(rHL)));t++;break;
            case 0xCF: rA = SET(1, rA);                         break;

            case 0xD0: rB = SET(2, rB);                         break;
            case 0xD1: rC = SET(2, rC);                         break;
            case 0xD2: rD = SET(2, rD);                         break;
            case 0xD3: rE = SET(2, rE);                         break;
            case 0xD4: rH = SET(2, rH);                         break;
            case 0xD5: rL = SET(2, rL);                         break;
            case 0xD6: WRITE_MEM_8(rHL, SET(2, READ_MEM_8(rHL)));t++;break;
            case 0xD7: rA = SET(2, rA);                         break;
            case 0xD8: rB = SET(3, rB);                         break;
            case 0xD9: rC = SET(3, rC);                         break;
            case 0xDA: rD = SET(3, rD);                         break;
            case 0xDB: rE = SET(3, rE);                         break;
            case 0xDC: rH = SET(3, rH);                         break;
            case 0xDD: rL = SET(3, rL);                         break;
            case 0xDE: WRITE_MEM_8(rHL, SET(3, READ_MEM_8(rHL)));t++;break;
            case 0xDF: rA = SET(3, rA);                         break;

            case 0xE0: rB = SET(4, rB);                         break;
            case 0xE1: rC = SET(4, rC);                         break;
            case 0xE2: rD = SET(4, rD);                         break;
            case 0xE3: rE = SET(4, rE);                         break;
            case 0xE4: rH = SET(4, rH);                         break;
            case 0xE5: rL = SET(4, rL);                         break;
            case 0xE6: WRITE_MEM_8(rHL, SET(4, READ_MEM_8(rHL)));t++;break;
            case 0xE7: rA = SET(4, rA);                         break;
            case 0xE8: rB = SET(5, rB);                         break;
            case 0xE9: rC = SET(5, rC);                         break;
            case 0xEA: rD = SET(5, rD);                         break;
            case 0xEB: rE = SET(5, rE);                         break;
            case 0xEC: rH = SET(5, rH);                         break;
            case 0xED: rL = SET(5, rL);                         break;
            case 0xEE: WRITE_MEM_8(rHL, SET(5, READ_MEM_8(rHL)));t++;break;
            case 0xEF: rA = SET(5, rA);                         break;

            case 0xF0: rB = SET(6, rB);                         break;
            case 0xF1: rC = SET(6, rC);                         break;
            case 0xF2: rD = SET(6, rD);                         break;
            case 0xF3: rE = SET(6, rE);                         break;
            case 0xF4: rH = SET(6, rH);                         break;
            case 0xF5: rL = SET(6, rL);                         break;
            case 0xF6: WRITE_MEM_8(rHL, SET(6, READ_MEM_8(rHL)));t++;break;
            case 0xF7: rA = SET(6, rA);                         break;
            case 0xF8: rB = SET(7, rB);                         break;
            case 0xF9: rC = SET(7, rC);                         break;
            case 0xFA: rD = SET(7, rD);                         break;
            case 0xFB: rE = SET(7, rE);                         break;
            case 0xFC: rH = SET(7, rH);                         break;
            case 0xFD: rL = SET(7, rL);                         break;
            case 0xFE: WRITE_MEM_8(rHL, SET(7, READ_MEM_8(rHL)));t++;break;
            case 0xFF: rA = SET(7, rA);                         break;
        }
    }

    void IX_INSTRUCTIONS()
    {
        const uint8_t opcode = READ_M1();
        uint8_t d;

        switch (opcode)
        {
            case 0x00: INVALID();                       break;
            case 0x01: INVALID();                       break;
            case 0x02: INVALID();                       break;
            case 0x03: INVALID();                       break;
            case 0x04: INC8(_rB);                       break;
            case 0x05: DEC8(_rB);                       break;
            case 0x06: rB = READ_MEM_8();               break;
            case 0x07: INVALID();                       break;
            case 0x08: INVALID();                       break;
            case 0x09: ADD16(_rIX, rBC);                break;
            case 0x0A: INVALID();                       break;
            case 0x0B: INVALID();                       break;
            case 0x0C: INC8(_rC);                       break;
            case 0x0D: DEC8(_rC);                       break;
            case 0x0E: rC = READ_MEM_8();               break;
            case 0x0F: INVALID();                       break;

            case 0x10: INVALID();                       break;
            case 0x11: INVALID();                       break;
            case 0x12: INVALID();                       break;
            case 0x13: INVALID();                       break;
            case 0x14: INC8(_rD);                       break;
            case 0x15: DEC8(_rD);                       break;
            case 0x16: rD = READ_MEM_8();               break;
            case 0x17: INVALID();                       break;
            case 0x18: INVALID();                       break;
            case 0x19: ADD16(_rIX, rDE);                break;
            case 0x1A: INVALID();                       break;
            case 0x1B: INVALID();                       break;
            case 0x1C: INC8(_rE);                       break;
            case 0x1D: DEC8(_rE);                       break;
            case 0x1E: rE = READ_MEM_8();               break;
            case 0x1F: INVALID();                       break;

            case 0x20: INVALID();                       break;
            case 0x21: rIX = READ_MEM_16();             break;
            case 0x22: WRITE_MEM_16(READ_MEM_16(),rIX); break;
            case 0x23: INC16(_rIX);                     break;
            case 0x24: INC8(_rIXH);                     break;
            case 0x25: DEC8(_rIXH);                     break;
            case 0x26: rIXH = READ_MEM_8();             break;
            case 0x27: INVALID();                       break;
            case 0x28: INVALID();                       break;
            case 0x29: ADD16(_rIX, rIX);                break;
            case 0x2A: rIX = READ_MEM_16(READ_MEM_16());break;
            case 0x2B: DEC16(_rIX);                     break;
            case 0x2C: INC8(_rIXL);                     break;
            case 0x2D: DEC8(_rIXL);                     break;
            case 0x2E: rIXL = READ_MEM_8();             break;
            case 0x2F: INVALID();                       break;

            case 0x30: INVALID();                       break;
            case 0x31: INVALID();                       break;
            case 0x32: INVALID();                       break;
            case 0x33: INVALID();                       break;
            case 0x34: INCMEM8(rIX+READ_MEM_8());t+=2;  break;
            case 0x35: DECMEM8(rIX+READ_MEM_8());t+=2;  break;
            case 0x36: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, READ_MEM_8()); t+=2; break;
            case 0x37: INVALID();                       break;
            case 0x38: INVALID();                       break;
            case 0x39: ADD16(_rIX, rSP);                break;
            case 0x3A: INVALID();                       break;
            case 0x3B: INVALID();                       break;
            case 0x3C: INC8(_rA);                       break;
            case 0x3D: DEC8(_rA);                       break;
            case 0x3E: rA = READ_MEM_8();               break;
            case 0x3F: INVALID();                       break;

            case 0x40: rB = rB;                         break;
            case 0x41: rB = rC;                         break;
            case 0x42: rB = rD;                         break;
            case 0x43: rB = rE;                         break;
            case 0x44: rB = rIXH;                       break;
            case 0x45: rB = rIXL;                       break;
            case 0x46: d=READ_MEM_8(); rB = READ_MEM_8(rIX+d);t+=5;break;
            case 0x47: rB = rA;                         break;
            case 0x48: rC = rB;                         break;
            case 0x49: rC = rC;                         break;
            case 0x4A: rC = rD;                         break;
            case 0x4B: rC = rE;                         break;
            case 0x4C: rC = rIXH;                       break;
            case 0x4D: rC = rIXL;                       break;
            case 0x4E: d=READ_MEM_8(); rC = READ_MEM_8(rIX+d);t+=5;break;
            case 0x4F: rC = rA;                         break;

            case 0x50: rD = rB;                         break;
            case 0x51: rD = rC;                         break;
            case 0x52: rD = rD;                         break;
            case 0x53: rD = rE;                         break;
            case 0x54: rD = rIXH;                       break;
            case 0x55: rD = rIXL;                       break;
            case 0x56: d=READ_MEM_8(); rD = READ_MEM_8(rIX+d);t+=5;break;
            case 0x57: rD = rA;                         break;
            case 0x58: rE = rB;                         break;
            case 0x59: rE = rC;                         break;
            case 0x5A: rE = rD;                         break;
            case 0x5B: rE = rE;                         break;
            case 0x5C: rE = rIXH;                       break;
            case 0x5D: rE = rIXL;                       break;
            case 0x5E: d=READ_MEM_8(); rE = READ_MEM_8(rIX+d);t+=5;break;
            case 0x5F: rE = rA;                         break;
            
            case 0x60: rIXH = rB;                       break;
            case 0x61: rIXH = rC;                       break;
            case 0x62: rIXH = rD;                       break;
            case 0x63: rIXH = rE;                       break;
            case 0x64: rIXH = rIXH;                     break;
            case 0x65: rIXH = rIXL;                     break;
            case 0x66: d=READ_MEM_8(); rH = READ_MEM_8(rIX+d);t+=5;break;
            case 0x67: rIXH = rA;                       break;
            case 0x68: rIXL = rB;                       break;
            case 0x69: rIXL = rC;                       break;
            case 0x6A: rIXL = rD;                       break;
            case 0x6B: rIXL = rE;                       break;
            case 0x6C: rIXL = rIXH;                     break;
            case 0x6D: rIXL = rIXL;                     break;
            case 0x6E: d=READ_MEM_8(); rL = READ_MEM_8(rIX+d);t+=5;break;
            case 0x6F: rIXL = rA;                       break;

            case 0x70: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rB);t+=5;break;
            case 0x71: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rC);t+=5;break;
            case 0x72: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rD);t+=5;break;
            case 0x73: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rE);t+=5;break;
            case 0x74: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rH);t+=5;break;
            case 0x75: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rL);t+=5;break;
            case 0x76: INVALID();                       break;
            case 0x77: d=READ_MEM_8(); WRITE_MEM_8(rIX+d, rA);t+=5;break;
            case 0x78: rA = rB;                         break;
            case 0x79: rA = rC;                         break;
            case 0x7A: rA = rD;                         break;
            case 0x7B: rA = rE;                         break;
            case 0x7C: rA = rIXH;                       break;
            case 0x7D: rA = rIXL;                       break;
            case 0x7E: d=READ_MEM_8(); rA = READ_MEM_8(rIX+d);t+=5;break;
            case 0x7F: rA = rA;                         break;
            
            case 0x80: ADD8(rB);                   break;
            case 0x81: ADD8(rC);                   break;
            case 0x82: ADD8(rD);                   break;
            case 0x83: ADD8(rE);                   break;
            case 0x84: ADD8(rIXH);                 break;
            case 0x85: ADD8(rIXL);                 break;
            case 0x86: d=READ_MEM_8(); ADD8(READ_MEM_8(rIX+d));t+=5; break;
            case 0x87: ADD8(rA);                   break;
            case 0x88: ADC8(rB);                   break;
            case 0x89: ADC8(rC);                   break;
            case 0x8A: ADC8(rD);                   break;
            case 0x8B: ADC8(rE);                   break;
            case 0x8C: ADC8(rIXH);                 break;
            case 0x8D: ADC8(rIXL);                 break;
            case 0x8E: d=READ_MEM_8(); ADC8(READ_MEM_8(rIX+d));t+=5; break;
            case 0x8F: ADC8(rA);                   break;

            case 0x90: SUB8(rB);                        break;
            case 0x91: SUB8(rC);                        break;
            case 0x92: SUB8(rD);                        break;
            case 0x93: SUB8(rE);                        break;
            case 0x94: SUB8(rIXH);                      break;
            case 0x95: SUB8(rIXL);                      break;
            case 0x96: d=READ_MEM_8(); SUB8(READ_MEM_8(rIX+d));t+=5; break;
            case 0x97: SUB8(rA);                        break;
            case 0x98: SBC8(rB);                   break;
            case 0x99: SBC8(rC);                   break;
            case 0x9A: SBC8(rD);                   break;
            case 0x9B: SBC8(rE);                   break;
            case 0x9C: SBC8(rIXH);                 break;
            case 0x9D: SBC8(rIXL);                 break;
            case 0x9E: d=READ_MEM_8(); SBC8(READ_MEM_8(rIX+d));t+=5; break;
            case 0x9F: SBC8(rA);                   break;

            case 0xA0: AND(rB);                         break;
            case 0xA1: AND(rC);                         break;
            case 0xA2: AND(rD);                         break;
            case 0xA3: AND(rE);                         break;
            case 0xA4: AND(rIXH);                       break;
            case 0xA5: AND(rIXL);                       break;
            case 0xA6: d=READ_MEM_8(); AND(READ_MEM_8(rIX+d));t+=5; break;
            case 0xA7: AND(rA);                         break;
            case 0xA8: XOR(rB);                         break;
            case 0xA9: XOR(rC);                         break;
            case 0xAA: XOR(rD);                         break;
            case 0xAB: XOR(rE);                         break;
            case 0xAC: XOR(rIXH);                       break;
            case 0xAD: XOR(rIXL);                       break;
            case 0xAE: d=READ_MEM_8(); XOR(READ_MEM_8(rIX+d));t+=5; break;
            case 0xAF: XOR(rA);                         break;

            case 0xB0: OR(rB);                          break;
            case 0xB1: OR(rC);                          break;
            case 0xB2: OR(rD);                          break;
            case 0xB3: OR(rE);                          break;
            case 0xB4: OR(rIXH);                        break;
            case 0xB5: OR(rIXL);                        break;
            case 0xB6: d=READ_MEM_8(); OR(READ_MEM_8(rIX+d));t+=5; break;
            case 0xB7: OR(rA);                          break;
            case 0xB8: CP(rB);                          break;
            case 0xB9: CP(rC);                          break;
            case 0xBA: CP(rD);                          break;
            case 0xBB: CP(rE);                          break;
            case 0xBC: CP(rIXH);                        break;
            case 0xBD: CP(rIXL);                        break;
            case 0xBE: d=READ_MEM_8(); CP(READ_MEM_8(rIX+d));t+=5; break;
            case 0xBF: CP(rA);                          break;

            case 0xCB: IX_BIT_INSTRUCTIONS();           break;
            case 0xE1: POP(_rIX);                       break;
            case 0xE3: EX_MEM(_rIX, rSP);               break;
            case 0xE5: PUSH(rIX);                       break;
            case 0xE9: JP(cNO, rIX);                    break;
            case 0xF9: rSP = rIX; t+=2;                 break;
            default: INVALID();                         break;
        }
    }

    void IX_BIT_INSTRUCTIONS()
    {
        const uint8_t d = READ_MEM_8();
        const uint8_t opcode = READ_MEM_8();
        t+=3;
        switch (opcode)
        {
            case 0x00: rB = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x01: rC = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x02: rD = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x03: rE = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x04: rH = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x05: rL = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x06:      WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x07: rA = WRITE_MEM_8(rIX+d, RLC(READ_MEM_8(rIX+d))); break;
            case 0x08: rB = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x09: rC = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x0A: rD = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x0B: rE = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x0C: rH = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x0D: rL = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x0E:      WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;
            case 0x0F: rA = WRITE_MEM_8(rIX+d, RRC(READ_MEM_8(rIX+d))); break;

            case 0x10: rB = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x11: rC = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x12: rD = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x13: rE = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x14: rH = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x15: rL = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x16:      WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x17: rA = WRITE_MEM_8(rIX+d, RL(READ_MEM_8(rIX+d))); break;
            case 0x18: rB = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x19: rC = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x1A: rD = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x1B: rE = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x1C: rH = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x1D: rL = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x1E:      WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;
            case 0x1F: rA = WRITE_MEM_8(rIX+d, RR(READ_MEM_8(rIX+d))); break;

            case 0x20: rB = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x21: rC = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x22: rD = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x23: rE = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x24: rH = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x25: rL = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x26:      WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x27: rA = WRITE_MEM_8(rIX+d, SLA(READ_MEM_8(rIX+d))); break;
            case 0x28: rB = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x29: rC = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x2A: rD = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x2B: rE = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x2C: rH = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x2D: rL = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x2E:      WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;
            case 0x2F: rA = WRITE_MEM_8(rIX+d, SRA(READ_MEM_8(rIX+d))); break;

            case 0x30: rB = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x31: rC = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x32: rD = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x33: rE = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x34: rH = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x35: rL = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x36:      WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x37: rA = WRITE_MEM_8(rIX+d, SLL(READ_MEM_8(rIX+d))); break;
            case 0x38: rB = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x39: rC = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x3A: rD = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x3B: rE = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x3C: rH = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x3D: rL = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x3E:      WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;
            case 0x3F: rA = WRITE_MEM_8(rIX+d, SRL(READ_MEM_8(rIX+d))); break;

            case 0x40: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x41: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x42: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x43: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x44: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x45: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x46: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x47: BIT(0, READ_MEM_8(rIX+d));                       break;
            case 0x48: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x49: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x4A: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x4B: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x4C: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x4D: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x4E: BIT(1, READ_MEM_8(rIX+d));                       break;
            case 0x4F: BIT(1, READ_MEM_8(rIX+d));                       break;
            
            case 0x50: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x51: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x52: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x53: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x54: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x55: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x56: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x57: BIT(2, READ_MEM_8(rIX+d));                       break;
            case 0x58: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x59: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x5A: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x5B: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x5C: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x5D: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x5E: BIT(3, READ_MEM_8(rIX+d));                       break;
            case 0x5F: BIT(3, READ_MEM_8(rIX+d));                       break;
            
            case 0x60: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x61: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x62: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x63: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x64: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x65: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x66: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x67: BIT(4, READ_MEM_8(rIX+d));                       break;
            case 0x68: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x69: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x6A: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x6B: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x6C: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x6D: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x6E: BIT(5, READ_MEM_8(rIX+d));                       break;
            case 0x6F: BIT(5, READ_MEM_8(rIX+d));                       break;
            
            case 0x70: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x71: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x72: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x73: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x74: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x75: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x76: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x77: BIT(6, READ_MEM_8(rIX+d));                       break;
            case 0x78: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x79: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x7A: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x7B: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x7C: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x7D: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x7E: BIT(7, READ_MEM_8(rIX+d));                       break;
            case 0x7F: BIT(7, READ_MEM_8(rIX+d));                       break;

            case 0x80: rB = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x81: rC = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x82: rD = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x83: rE = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x84: rH = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x85: rL = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x86:      WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x87: rA = WRITE_MEM_8(rIX+d, RES(0, READ_MEM_8(rIX+d))); break;
            case 0x88: rB = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x89: rC = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x8A: rD = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x8B: rE = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x8C: rH = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x8D: rL = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x8E:      WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;
            case 0x8F: rA = WRITE_MEM_8(rIX+d, RES(1, READ_MEM_8(rIX+d))); break;

            case 0x90: rB = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x91: rC = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x92: rD = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x93: rE = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x94: rH = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x95: rL = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x96:      WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x97: rA = WRITE_MEM_8(rIX+d, RES(2, READ_MEM_8(rIX+d))); break;
            case 0x98: rB = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x99: rC = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x9A: rD = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x9B: rE = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x9C: rH = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x9D: rL = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x9E:      WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;
            case 0x9F: rA = WRITE_MEM_8(rIX+d, RES(3, READ_MEM_8(rIX+d))); break;

            case 0xA0: rB = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA1: rC = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA2: rD = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA3: rE = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA4: rH = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA5: rL = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA6:      WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA7: rA = WRITE_MEM_8(rIX+d, RES(4, READ_MEM_8(rIX+d))); break;
            case 0xA8: rB = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xA9: rC = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xAA: rD = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xAB: rE = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xAC: rH = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xAD: rL = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xAE:      WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;
            case 0xAF: rA = WRITE_MEM_8(rIX+d, RES(5, READ_MEM_8(rIX+d))); break;

            case 0xB0: rB = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB1: rC = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB2: rD = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB3: rE = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB4: rH = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB5: rL = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB6:      WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB7: rA = WRITE_MEM_8(rIX+d, RES(6, READ_MEM_8(rIX+d))); break;
            case 0xB8: rB = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xB9: rC = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xBA: rD = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xBB: rE = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xBC: rH = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xBD: rL = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xBE:      WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;
            case 0xBF: rA = WRITE_MEM_8(rIX+d, RES(7, READ_MEM_8(rIX+d))); break;

            case 0xC0: rB = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC1: rC = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC2: rD = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC3: rE = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC4: rH = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC5: rL = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC6:      WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC7: rA = WRITE_MEM_8(rIX+d, SET(0, READ_MEM_8(rIX+d))); break;
            case 0xC8: rB = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xC9: rC = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xCA: rD = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xCB: rE = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xCC: rH = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xCD: rL = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xCE:      WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;
            case 0xCF: rA = WRITE_MEM_8(rIX+d, SET(1, READ_MEM_8(rIX+d))); break;

            case 0xD0: rB = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD1: rC = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD2: rD = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD3: rE = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD4: rH = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD5: rL = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD6:      WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD7: rA = WRITE_MEM_8(rIX+d, SET(2, READ_MEM_8(rIX+d))); break;
            case 0xD8: rB = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xD9: rC = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xDA: rD = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xDB: rE = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xDC: rH = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xDD: rL = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xDE:      WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;
            case 0xDF: rA = WRITE_MEM_8(rIX+d, SET(3, READ_MEM_8(rIX+d))); break;

            case 0xE0: rB = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE1: rC = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE2: rD = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE3: rE = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE4: rH = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE5: rL = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE6:      WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE7: rA = WRITE_MEM_8(rIX+d, SET(4, READ_MEM_8(rIX+d))); break;
            case 0xE8: rB = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xE9: rC = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xEA: rD = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xEB: rE = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xEC: rH = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xED: rL = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xEE:      WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;
            case 0xEF: rA = WRITE_MEM_8(rIX+d, SET(5, READ_MEM_8(rIX+d))); break;

            case 0xF0: rB = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF1: rC = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF2: rD = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF3: rE = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF4: rH = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF5: rL = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF6:      WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF7: rA = WRITE_MEM_8(rIX+d, SET(6, READ_MEM_8(rIX+d))); break;
            case 0xF8: rB = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xF9: rC = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xFA: rD = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xFB: rE = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xFC: rH = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xFD: rL = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xFE:      WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
            case 0xFF: rA = WRITE_MEM_8(rIX+d, SET(7, READ_MEM_8(rIX+d))); break;
        }
    }

    void MISC_INSTRUCTIONS()
    {
        const uint8_t opcode = READ_M1();
        uint16_t tmp;

        switch (opcode)
        {
            case 0x40: rB = IN();                       break;
            case 0x41: OUT(rB, rC);                     break;
            case 0x42: SBC16(_rHL, rBC);                break;
            case 0x43: WRITE_MEM_16(READ_MEM_16(), rBC);break;
            case 0x44: NEG();                           break;
            case 0x45: RETN();                          break;
            case 0x46: IM(0);                           break;
            case 0x47: rI = rA;                         break;
            case 0x48: rC = IN();                       break;
            case 0x49: OUT(rC, rC);                     break;
            case 0x4A: ADC16(_rHL, rBC);                break;
            case 0x4B: rBC = READ_MEM_16(READ_MEM_16());break;
            case 0x4D: RETI();                          break;
            case 0x4F: rR = rA;                         break;

            case 0x50: rD = IN();                       break;
            case 0x51: OUT(rD, rC);                     break;
            case 0x52: SBC16(_rHL, rDE);                break;
            case 0x53: WRITE_MEM_16(READ_MEM_16(), rDE);break;
            case 0x56: IM(1);                           break;
            case 0x57: rA = rI;                         break;
            case 0x58: rE = IN();                       break;
            case 0x59: OUT(rE, rC);                     break;
            case 0x5A: ADC16(_rHL, rDE);                break;
            case 0x5B: rDE = READ_MEM_16(READ_MEM_16());break;
            case 0x5E: IM(2);                           break;
            case 0x5F: rA = rR;                         break;

            case 0x60: rH = IN();                       break;
            case 0x61: OUT(rH, rC);                     break;
            case 0x62: SBC16(_rHL, rHL);                break;
            case 0x63: WRITE_MEM_16(READ_MEM_16(), rHL);break;
            case 0x67: RRD();                           break;
            case 0x68: rL = IN();                       break;
            case 0x69: OUT(rL, rC);                     break;
            case 0x6A: ADC16(_rHL, rHL);                break;
            case 0x6B: rHL = READ_MEM_16(READ_MEM_16());break;
            case 0x6F: RLD();                           break;

            case 0x70: IN();                            break;
            case 0x71: OUT(0, rC);                      break;
            case 0x72: SBC16(_rHL, rSP);                break;
            case 0x73: WRITE_MEM_16(READ_MEM_16(), rSP);break;
            case 0x78: rA = IN();                       break;
            case 0x79: OUT(rA, rC);                     break;
            case 0x7A: ADC16(_rHL, rSP);                break;
            case 0x7B: rSP = READ_MEM_16(READ_MEM_16());break;

            case 0xA0: LDI();                           break;
            case 0xA1: CPI();                           break;
            case 0xA2: INI();                           break;
            case 0xA3: OUTI();                          break;
            case 0xA8: LDD();                           break;
            case 0xA9: CPD();                           break;
            case 0xAA: IND();                           break;
            case 0xAB: OUTD();                          break;

            case 0xB0: LDIR();                          break;
            case 0xB1: CPIR();                          break;
            case 0xB2: INIR();                          break;
            case 0xB3: OUTIR();                         break;
            case 0xB8: LDDR();                          break;
            case 0xB9: CPDR();                          break;
            case 0xBA: INDR();                          break;
            case 0xBB: OUTDR();                         break;
            
            default: INVALID();                         break;
        }

    }

    void IY_INSTRUCTIONS()
    {
        const uint8_t opcode = READ_M1();
        uint8_t d;

        switch (opcode)
        {
            case 0x00: INVALID();                       break;
            case 0x01: INVALID();                       break;
            case 0x02: INVALID();                       break;
            case 0x03: INVALID();                       break;
            case 0x04: INC8(_rB);                       break;
            case 0x05: DEC8(_rB);                       break;
            case 0x06: rB = READ_MEM_8();               break;
            case 0x07: INVALID();                       break;
            case 0x08: INVALID();                       break;
            case 0x09: ADD16(_rIY, rBC);                break;
            case 0x0A: INVALID();                       break;
            case 0x0B: INVALID();                       break;
            case 0x0C: INC8(_rC);                       break;
            case 0x0D: DEC8(_rC);                       break;
            case 0x0E: rC = READ_MEM_8();               break;
            case 0x0F: INVALID();                       break;

            case 0x10: INVALID();                       break;
            case 0x11: INVALID();                       break;
            case 0x12: INVALID();                       break;
            case 0x13: INVALID();                       break;
            case 0x14: INC8(_rD);                       break;
            case 0x15: DEC8(_rD);                       break;
            case 0x16: rD = READ_MEM_8();               break;
            case 0x17: INVALID();                       break;
            case 0x18: INVALID();                       break;
            case 0x19: ADD16(_rIY, rDE);                break;
            case 0x1A: INVALID();                       break;
            case 0x1B: INVALID();                       break;
            case 0x1C: INC8(_rE);                       break;
            case 0x1D: DEC8(_rE);                       break;
            case 0x1E: rE = READ_MEM_8();               break;
            case 0x1F: INVALID();                       break;

            case 0x20: INVALID();                       break;
            case 0x21: rIY = READ_MEM_16();             break;
            case 0x22: WRITE_MEM_16(READ_MEM_16(),rIY); break;
            case 0x23: INC16(_rIY);                     break;
            case 0x24: INC8(_rIYH);                     break;
            case 0x25: DEC8(_rIYH);                     break;
            case 0x26: rIYH = READ_MEM_8();             break;
            case 0x27: INVALID();                       break;
            case 0x28: INVALID();                       break;
            case 0x29: ADD16(_rIY, rIY);                break;
            case 0x2A: rIY = READ_MEM_16(READ_MEM_16());break;
            case 0x2B: DEC16(_rIY);                     break;
            case 0x2C: INC8(_rIYL);                     break;
            case 0x2D: DEC8(_rIYL);                     break;
            case 0x2E: rIYL = READ_MEM_8();             break;
            case 0x2F: INVALID();                       break;

            case 0x30: INVALID();                       break;
            case 0x31: INVALID();                       break;
            case 0x32: INVALID();                       break;
            case 0x33: INVALID();                       break;
            case 0x34: INCMEM8(rIY+READ_MEM_8());t+=2;  break;
            case 0x35: DECMEM8(rIY+READ_MEM_8());t+=2;  break;
            case 0x36: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, READ_MEM_8()); t+=2; break;
            case 0x37: INVALID();                       break;
            case 0x38: INVALID();                       break;
            case 0x39: ADD16(_rIY, rSP);                break;
            case 0x3A: INVALID();                       break;
            case 0x3B: INVALID();                       break;
            case 0x3C: INC8(_rA);                       break;
            case 0x3D: DEC8(_rA);                       break;
            case 0x3E: rA = READ_MEM_8();               break;
            case 0x3F: INVALID();                       break;

            case 0x40: rB = rB;                         break;
            case 0x41: rB = rC;                         break;
            case 0x42: rB = rD;                         break;
            case 0x43: rB = rE;                         break;
            case 0x44: rB = rIYH;                       break;
            case 0x45: rB = rIYL;                       break;
            case 0x46: d=READ_MEM_8(); rB = READ_MEM_8(rIY+d);t+=5;break;
            case 0x47: rB = rA;                         break;
            case 0x48: rC = rB;                         break;
            case 0x49: rC = rC;                         break;
            case 0x4A: rC = rD;                         break;
            case 0x4B: rC = rE;                         break;
            case 0x4C: rC = rIYH;                       break;
            case 0x4D: rC = rIYL;                       break;
            case 0x4E: d=READ_MEM_8(); rC = READ_MEM_8(rIY+d);t+=5;break;
            case 0x4F: rC = rA;                         break;

            case 0x50: rD = rB;                         break;
            case 0x51: rD = rC;                         break;
            case 0x52: rD = rD;                         break;
            case 0x53: rD = rE;                         break;
            case 0x54: rD = rIYH;                       break;
            case 0x55: rD = rIYL;                       break;
            case 0x56: d=READ_MEM_8(); rD = READ_MEM_8(rIY+d);t+=5;break;
            case 0x57: rD = rA;                         break;
            case 0x58: rE = rB;                         break;
            case 0x59: rE = rC;                         break;
            case 0x5A: rE = rD;                         break;
            case 0x5B: rE = rE;                         break;
            case 0x5C: rE = rIYH;                       break;
            case 0x5D: rE = rIYL;                       break;
            case 0x5E: d=READ_MEM_8(); rE = READ_MEM_8(rIY+d);t+=5;break;
            case 0x5F: rE = rA;                         break;
            
            case 0x60: rIYH = rB;                       break;
            case 0x61: rIYH = rC;                       break;
            case 0x62: rIYH = rD;                       break;
            case 0x63: rIYH = rE;                       break;
            case 0x64: rIYH = rIYH;                     break;
            case 0x65: rIYH = rIYL;                     break;
            case 0x66: d=READ_MEM_8(); rH = READ_MEM_8(rIY+d);t+=5;break;
            case 0x67: rIYH = rA;                       break;
            case 0x68: rIYL = rB;                       break;
            case 0x69: rIYL = rC;                       break;
            case 0x6A: rIYL = rD;                       break;
            case 0x6B: rIYL = rE;                       break;
            case 0x6C: rIYL = rIYH;                     break;
            case 0x6D: rIYL = rIYL;                     break;
            case 0x6E: d=READ_MEM_8(); rL = READ_MEM_8(rIY+d);t+=5;break;
            case 0x6F: rIYL = rA;                       break;

            case 0x70: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rB);t+=5;break;
            case 0x71: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rC);t+=5;break;
            case 0x72: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rD);t+=5;break;
            case 0x73: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rE);t+=5;break;
            case 0x74: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rH);t+=5;break;
            case 0x75: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rL);t+=5;break;
            case 0x76: INVALID();                       break;
            case 0x77: d=READ_MEM_8(); WRITE_MEM_8(rIY+d, rA);t+=5;break;
            case 0x78: rA = rB;                         break;
            case 0x79: rA = rC;                         break;
            case 0x7A: rA = rD;                         break;
            case 0x7B: rA = rE;                         break;
            case 0x7C: rA = rIYH;                       break;
            case 0x7D: rA = rIYL;                       break;
            case 0x7E: d=READ_MEM_8(); rA = READ_MEM_8(rIY+d);t+=5;break;
            case 0x7F: rA = rA;                         break;
            
            case 0x80: ADD8(rB);                   break;
            case 0x81: ADD8(rC);                   break;
            case 0x82: ADD8(rD);                   break;
            case 0x83: ADD8(rE);                   break;
            case 0x84: ADD8(rIYH);                 break;
            case 0x85: ADD8(rIYL);                 break;
            case 0x86: d=READ_MEM_8(); ADD8(READ_MEM_8(rIY+d));t+=5; break;
            case 0x87: ADD8(rA);                   break;
            case 0x88: ADC8(rB);                   break;
            case 0x89: ADC8(rC);                   break;
            case 0x8A: ADC8(rD);                   break;
            case 0x8B: ADC8(rE);                   break;
            case 0x8C: ADC8(rIYH);                 break;
            case 0x8D: ADC8(rIYL);                 break;
            case 0x8E: d=READ_MEM_8(); ADC8(READ_MEM_8(rIY+d));t+=5; break;
            case 0x8F: ADC8(rA);                   break;

            case 0x90: SUB8(rB);                        break;
            case 0x91: SUB8(rC);                        break;
            case 0x92: SUB8(rD);                        break;
            case 0x93: SUB8(rE);                        break;
            case 0x94: SUB8(rIYH);                      break;
            case 0x95: SUB8(rIYL);                      break;
            case 0x96: d=READ_MEM_8(); SUB8(READ_MEM_8(rIY+d));t+=5; break;
            case 0x97: SUB8(rA);                        break;
            case 0x98: SBC8(rB);                   break;
            case 0x99: SBC8(rC);                   break;
            case 0x9A: SBC8(rD);                   break;
            case 0x9B: SBC8(rE);                   break;
            case 0x9C: SBC8(rIYH);                 break;
            case 0x9D: SBC8(rIYL);                 break;
            case 0x9E: d=READ_MEM_8(); SBC8(READ_MEM_8(rIY+d));t+=5; break;
            case 0x9F: SBC8(rA);                   break;

            case 0xA0: AND(rB);                         break;
            case 0xA1: AND(rC);                         break;
            case 0xA2: AND(rD);                         break;
            case 0xA3: AND(rE);                         break;
            case 0xA4: AND(rIYH);                       break;
            case 0xA5: AND(rIYL);                       break;
            case 0xA6: d=READ_MEM_8(); AND(READ_MEM_8(rIY+d));t+=5; break;
            case 0xA7: AND(rA);                         break;
            case 0xA8: XOR(rB);                         break;
            case 0xA9: XOR(rC);                         break;
            case 0xAA: XOR(rD);                         break;
            case 0xAB: XOR(rE);                         break;
            case 0xAC: XOR(rIYH);                       break;
            case 0xAD: XOR(rIYL);                       break;
            case 0xAE: d=READ_MEM_8(); XOR(READ_MEM_8(rIY+d));t+=5; break;
            case 0xAF: XOR(rA);                         break;

            case 0xB0: OR(rB);                          break;
            case 0xB1: OR(rC);                          break;
            case 0xB2: OR(rD);                          break;
            case 0xB3: OR(rE);                          break;
            case 0xB4: OR(rIYH);                        break;
            case 0xB5: OR(rIYL);                        break;
            case 0xB6: d=READ_MEM_8(); OR(READ_MEM_8(rIY+d));t+=5; break;
            case 0xB7: OR(rA);                          break;
            case 0xB8: CP(rB);                          break;
            case 0xB9: CP(rC);                          break;
            case 0xBA: CP(rD);                          break;
            case 0xBB: CP(rE);                          break;
            case 0xBC: CP(rIYH);                        break;
            case 0xBD: CP(rIYL);                        break;
            case 0xBE: d=READ_MEM_8(); CP(READ_MEM_8(rIY+d));t+=5; break;
            case 0xBF: CP(rA);                          break;

            case 0xCB: IY_BIT_INSTRUCTIONS();           break;
            case 0xE1: POP(_rIY);                       break;
            case 0xE3: EX_MEM(_rIY, rSP);               break;
            case 0xE5: PUSH(rIY);                       break;
            case 0xE9: JP(cNO, rIY);                    break;
            case 0xF9: rSP = rIY; t+=2;                 break;
            default: INVALID();                         break;
         }
    }

    void IY_BIT_INSTRUCTIONS()
    {
        const uint8_t d = READ_MEM_8();
        const uint8_t opcode = READ_MEM_8();
        t+=3;
        switch (opcode)
        {
            case 0x00: rB = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x01: rC = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x02: rD = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x03: rE = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x04: rH = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x05: rL = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x06:      WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x07: rA = WRITE_MEM_8(rIY+d, RLC(READ_MEM_8(rIY+d))); break;
            case 0x08: rB = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x09: rC = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x0A: rD = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x0B: rE = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x0C: rH = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x0D: rL = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x0E:      WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;
            case 0x0F: rA = WRITE_MEM_8(rIY+d, RRC(READ_MEM_8(rIY+d))); break;

            case 0x10: rB = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x11: rC = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x12: rD = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x13: rE = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x14: rH = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x15: rL = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x16:      WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x17: rA = WRITE_MEM_8(rIY+d, RL(READ_MEM_8(rIY+d))); break;
            case 0x18: rB = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x19: rC = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x1A: rD = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x1B: rE = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x1C: rH = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x1D: rL = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x1E:      WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;
            case 0x1F: rA = WRITE_MEM_8(rIY+d, RR(READ_MEM_8(rIY+d))); break;

            case 0x20: rB = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x21: rC = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x22: rD = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x23: rE = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x24: rH = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x25: rL = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x26:      WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x27: rA = WRITE_MEM_8(rIY+d, SLA(READ_MEM_8(rIY+d))); break;
            case 0x28: rB = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x29: rC = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x2A: rD = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x2B: rE = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x2C: rH = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x2D: rL = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x2E:      WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;
            case 0x2F: rA = WRITE_MEM_8(rIY+d, SRA(READ_MEM_8(rIY+d))); break;

            case 0x30: rB = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x31: rC = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x32: rD = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x33: rE = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x34: rH = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x35: rL = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x36:      WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x37: rA = WRITE_MEM_8(rIY+d, SLL(READ_MEM_8(rIY+d))); break;
            case 0x38: rB = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x39: rC = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x3A: rD = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x3B: rE = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x3C: rH = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x3D: rL = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x3E:      WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;
            case 0x3F: rA = WRITE_MEM_8(rIY+d, SRL(READ_MEM_8(rIY+d))); break;

            case 0x40: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x41: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x42: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x43: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x44: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x45: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x46: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x47: BIT(0, READ_MEM_8(rIY+d));                       break;
            case 0x48: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x49: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x4A: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x4B: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x4C: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x4D: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x4E: BIT(1, READ_MEM_8(rIY+d));                       break;
            case 0x4F: BIT(1, READ_MEM_8(rIY+d));                       break;
            
            case 0x50: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x51: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x52: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x53: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x54: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x55: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x56: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x57: BIT(2, READ_MEM_8(rIY+d));                       break;
            case 0x58: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x59: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x5A: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x5B: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x5C: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x5D: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x5E: BIT(3, READ_MEM_8(rIY+d));                       break;
            case 0x5F: BIT(3, READ_MEM_8(rIY+d));                       break;
            
            case 0x60: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x61: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x62: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x63: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x64: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x65: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x66: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x67: BIT(4, READ_MEM_8(rIY+d));                       break;
            case 0x68: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x69: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x6A: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x6B: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x6C: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x6D: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x6E: BIT(5, READ_MEM_8(rIY+d));                       break;
            case 0x6F: BIT(5, READ_MEM_8(rIY+d));                       break;
            
            case 0x70: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x71: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x72: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x73: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x74: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x75: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x76: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x77: BIT(6, READ_MEM_8(rIY+d));                       break;
            case 0x78: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x79: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x7A: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x7B: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x7C: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x7D: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x7E: BIT(7, READ_MEM_8(rIY+d));                       break;
            case 0x7F: BIT(7, READ_MEM_8(rIY+d));                       break;

            case 0x80: rB = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x81: rC = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x82: rD = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x83: rE = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x84: rH = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x85: rL = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x86:      WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x87: rA = WRITE_MEM_8(rIY+d, RES(0, READ_MEM_8(rIY+d))); break;
            case 0x88: rB = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x89: rC = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x8A: rD = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x8B: rE = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x8C: rH = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x8D: rL = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x8E:      WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;
            case 0x8F: rA = WRITE_MEM_8(rIY+d, RES(1, READ_MEM_8(rIY+d))); break;

            case 0x90: rB = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x91: rC = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x92: rD = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x93: rE = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x94: rH = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x95: rL = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x96:      WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x97: rA = WRITE_MEM_8(rIY+d, RES(2, READ_MEM_8(rIY+d))); break;
            case 0x98: rB = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x99: rC = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x9A: rD = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x9B: rE = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x9C: rH = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x9D: rL = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x9E:      WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;
            case 0x9F: rA = WRITE_MEM_8(rIY+d, RES(3, READ_MEM_8(rIY+d))); break;

            case 0xA0: rB = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA1: rC = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA2: rD = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA3: rE = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA4: rH = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA5: rL = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA6:      WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA7: rA = WRITE_MEM_8(rIY+d, RES(4, READ_MEM_8(rIY+d))); break;
            case 0xA8: rB = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xA9: rC = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xAA: rD = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xAB: rE = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xAC: rH = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xAD: rL = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xAE:      WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;
            case 0xAF: rA = WRITE_MEM_8(rIY+d, RES(5, READ_MEM_8(rIY+d))); break;

            case 0xB0: rB = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB1: rC = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB2: rD = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB3: rE = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB4: rH = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB5: rL = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB6:      WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB7: rA = WRITE_MEM_8(rIY+d, RES(6, READ_MEM_8(rIY+d))); break;
            case 0xB8: rB = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xB9: rC = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xBA: rD = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xBB: rE = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xBC: rH = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xBD: rL = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xBE:      WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;
            case 0xBF: rA = WRITE_MEM_8(rIY+d, RES(7, READ_MEM_8(rIY+d))); break;

            case 0xC0: rB = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC1: rC = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC2: rD = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC3: rE = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC4: rH = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC5: rL = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC6:      WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC7: rA = WRITE_MEM_8(rIY+d, SET(0, READ_MEM_8(rIY+d))); break;
            case 0xC8: rB = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xC9: rC = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xCA: rD = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xCB: rE = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xCC: rH = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xCD: rL = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xCE:      WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;
            case 0xCF: rA = WRITE_MEM_8(rIY+d, SET(1, READ_MEM_8(rIY+d))); break;

            case 0xD0: rB = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD1: rC = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD2: rD = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD3: rE = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD4: rH = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD5: rL = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD6:      WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD7: rA = WRITE_MEM_8(rIY+d, SET(2, READ_MEM_8(rIY+d))); break;
            case 0xD8: rB = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xD9: rC = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xDA: rD = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xDB: rE = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xDC: rH = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xDD: rL = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xDE:      WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;
            case 0xDF: rA = WRITE_MEM_8(rIY+d, SET(3, READ_MEM_8(rIY+d))); break;

            case 0xE0: rB = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE1: rC = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE2: rD = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE3: rE = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE4: rH = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE5: rL = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE6:      WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE7: rA = WRITE_MEM_8(rIY+d, SET(4, READ_MEM_8(rIY+d))); break;
            case 0xE8: rB = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xE9: rC = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xEA: rD = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xEB: rE = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xEC: rH = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xED: rL = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xEE:      WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;
            case 0xEF: rA = WRITE_MEM_8(rIY+d, SET(5, READ_MEM_8(rIY+d))); break;

            case 0xF0: rB = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF1: rC = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF2: rD = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF3: rE = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF4: rH = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF5: rL = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF6:      WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF7: rA = WRITE_MEM_8(rIY+d, SET(6, READ_MEM_8(rIY+d))); break;
            case 0xF8: rB = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xF9: rC = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xFA: rD = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xFB: rE = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xFC: rH = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xFD: rL = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xFE:      WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
            case 0xFF: rA = WRITE_MEM_8(rIY+d, SET(7, READ_MEM_8(rIY+d))); break;
        }
    }

    uint8_t *getMem() { return memory; }

    uint16_t getAF(const bool alt) { return alt?rAF2:rAF; }
    uint16_t getBC(const bool alt) { return alt?rBC2:rBC; }
    uint16_t getDE(const bool alt) { return alt?rDE2:rDE; }
    uint16_t getHL(const bool alt) { return alt?rHL2:rHL; }

    uint16_t getIX() { return rIX; }
    uint16_t getIY() { return rIY; }
    uint16_t getSP() { return rSP; }

    uint16_t getPC() { return rPC; }

}