source/src/vm/phc20/memory.h

   1 /*
   2         SANYO PHC-20 Emulator 'ePHC-20'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2010.09.03-
   6
   7         [ memory ]
   8 */
   9
  10 #ifndef _PHC20_MEMORY_H_
  11 #define _PHC20_MEMORY_H_
  12
  13 #include "../vm.h"
  14 #include "../../emu.h"
  15 #include "../device.h"
  16
  17 #define SIG_MEMORY_SYSPORT      0
  18
  19 class PHC20_MEMORY : public DEVICE
  20 {
  21 private:
  22         DEVICE *d_drec;
  23
  24         uint8_t rom[0x2000];
  25         uint8_t ram[0x1000];
  26         uint8_t vram[0x400];
  27
  28         uint8_t wdmy[0x400];
  29         uint8_t rdmy[0x400];
  30         uint8_t* wbank[64];
  31         uint8_t* rbank[64];
  32
  33         const uint8_t* key_stat;
  34         uint8_t status[9];
  35         uint8_t sysport;
  36
  37 public:
  38         PHC20_MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  39         {
  40                 set_device_name(_T("Memory Bus"));
  41         }
  42         ~PHC20_MEMORY() {}
  43
  44         // common functions
  45         void initialize();
  46         void reset();
  47         void write_data8(uint32_t addr, uint32_t data);
  48         uint32_t read_data8(uint32_t addr);
  49         void event_frame();
  50         void write_signal(int id, uint32_t data, uint32_t mask);
  51         bool process_state(FILEIO* state_fio, bool loading);
  52
  53         // unique functions
  54         void set_context_drec(DEVICE* device)
  55         {
  56                 d_drec = device;
  57         }
  58         uint8_t* get_vram()
  59         {
  60                 return vram;
  61         }
  62 };
  63
  64 #endif
  65