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#ifndef Z80_DECODER_H_

#define Z80_DECODER_H_

#include <stdint.h>

#include "systemc.h"

typedef enum { UNPRE, PRE_CB, PRE_DD, PRE_ED, PRE_FD, DISP, IMM1, IMM2, IMM2B } dec_state;

SC_MODULE(z80_decoder)

{

private:

        dec_state state;

        sc_uint<8> opcode;

        char *op_name;

        char op_buf[80];

        uint16_t imm, op_addr;

        void decode_unpre();

        void op_print();

public:

        sc_in<bool>   clk;

        sc_in<uint32_t> addr;

        sc_in<bool>   m1_n;

        sc_in<bool>   mreq_n;

        sc_in<bool>   rd_n;

        sc_in<bool>   wait_n;

        sc_in<uint32_t> di;

        sc_in<bool>   reset_n;

        bool en_decode;

        void event();

        SC_CTOR(z80_decoder) {

                SC_METHOD (event);

                sensitive << clk.pos();

                en_decode = false;

        }

};

#endif /*Z80_DECODER_H_*/