source/src/vm/pc8201/memory.h

   1 /*
   2         NEC PC-8201 Emulator 'ePC-8201'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2009.03.31-
   6
   7         [ memory ]
   8 */
   9
  10 #ifndef _MEMORY_H_
  11 #define _MEMORY_H_
  12
  13 #include "../vm.h"
  14 #include "../../emu.h"
  15 #include "../device.h"
  16
  17 class MEMORY : public DEVICE
  18 {
  19 private:
  20         DEVICE *d_cmt, *d_drec, *d_rtc;
  21
  22         uint8_t ipl[0x8000];    // rom #0
  23         uint8_t ext[0x8000];    // rom #1
  24         uint8_t ram[0x8000*3];  // standard and optional ram
  25         uint8_t wdmy[0x1000];
  26         uint8_t rdmy[0x1000];
  27         uint8_t* wbank[16];
  28         uint8_t* rbank[16];
  29
  30         uint8_t sio, bank;
  31         void update_bank();
  32
  33 public:
  34         MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  35         {
  36                 set_device_name(_T("Memory Bus"));
  37         }
  38         ~MEMORY() {}
  39
  40         // common functions
  41         void initialize();
  42         void release();
  43         void reset();
  44         void write_data8(uint32_t addr, uint32_t data);
  45         uint32_t read_data8(uint32_t addr);
  46         void write_io8(uint32_t addr, uint32_t data);
  47         uint32_t read_io8(uint32_t addr);
  48         void decl_state();
  49         void save_state(FILEIO* state_fio);
  50         bool load_state(FILEIO* state_fio);
  51
  52         // unique functions
  53         void set_context_cmt(DEVICE* device)
  54         {
  55                 d_cmt = device;
  56         }
  57         void set_context_drec(DEVICE* device)
  58         {
  59                 d_drec = device;
  60         }
  61         void set_context_rtc(DEVICE* device)
  62         {
  63                 d_rtc = device;
  64         }
  65 };
  66
  67 #endif
  68