016.h

PocketNester的c++源代码,很好的学习例子,仅供大家学习

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// Mapper 16
class NES_mapper16 : public NES_mapper
{
  friend void adopt_MPRD(SnssMapperBlock* block, NES* nes);
  friend int extract_MPRD(SnssMapperBlock* block, NES* nes);

public:
  NES_mapper16(NES* parent) : NES_mapper(parent) {}
  ~NES_mapper16() {}

  void  Reset();
  void  MemoryWriteSaveRAM(uint32 addr, uint8 data);
  void  MemoryWrite(uint32 addr, uint8 data);
  void  MemoryReadSaveRAM(uint32 addr);
  void  HSync(uint32 scanline);
  void  SetBarcodeValue(uint32 value_low, uint32 value_high);

protected:
  void  MemoryWrite2(uint32 addr, uint8 data);
  void  MemoryWrite3(uint32 addr, uint8 data);

  uint8 patch;
  uint8 regs[3];

  uint8 serial_out[0x2000];

  uint8 eeprom_cmd[4];
  uint8 eeprom_status;
  uint8 eeprom_mode;
  uint8 eeprom_pset;
  uint8 eeprom_addr, eeprom_data;
  uint8 eeprom_wbit, eeprom_rbit;

  uint8 barcode[256];
  uint8 barcode_status;
  uint8 barcode_pt;
  uint8 barcode_pt_max;
  uint8 barcode_phase;
  uint32 barcode_wait;
  uint8 barcode_enabled;

  uint8 irq_enabled;
  uint32 irq_counter;
  uint32 irq_latch;

private:
};
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