necdsp.hpp

//NEC uPD7725
//NEC uPD96050

class NECDSP : public Coprocessor {
public:
  enum class Revision : unsigned { uPD7725, uPD96050 } revision;

  #include "registers.hpp"

	//zero 01-sep-2014 - dont clobber these when reconstructing!
  static unsigned frequency;
  static uint24 programROM[16384];
  static uint16 dataROM[2048];
  static unsigned programROMSize;
  static unsigned dataROMSize;

  unsigned dataRAMSize;
  uint16 dataRAM[2048];

  static void Enter();
  void enter();

  void exec_op(uint24 opcode);
  void exec_rt(uint24 opcode);
  void exec_jp(uint24 opcode);
  void exec_ld(uint24 opcode);

  string disassemble(uint14 ip);

  uint8 sr_read(unsigned);
  void sr_write(unsigned, uint8 data);

  uint8 dr_read(unsigned);
  void dr_write(unsigned, uint8 data);

  uint8 dp_read(unsigned addr);
  void dp_write(unsigned addr, uint8 data);

  void init();
  void load();
  void unload();
  void power();
  void reset();

  void serialize(serializer&);
  NECDSP();
  ~NECDSP();
};

extern NECDSP necdsp;