source/src/vm/n5200/memory.h

   1 /*
   2         NEC N5200 Emulator 'eN5200'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2009.06.03-
   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         uint8_t* rbank[8192];   // 16MB / 2KB
  21         uint8_t* wbank[8192];
  22         uint8_t wdmy[0x800];
  23         uint8_t rdmy[0x800];
  24
  25         uint8_t ram[0xc0000];           // RAM 768KB
  26         uint8_t exram[0x100000];                // Ext RAM 1MB
  27         uint8_t vram[0x60000];          // VRAM 384KB ???
  28         uint8_t tvram[0x7800];          // TVRAM 32KB ???
  29         uint8_t backup[0x8200];         // Battery BackUp 32KB ???
  30         uint8_t ipl[0x10000];           // IPL 64KB
  31
  32         bool protect;
  33
  34 public:
  35         MEMORY(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu) {}
  36         ~MEMORY() {}
  37
  38         // common functions
  39         void initialize();
  40         void release();
  41         void reset();
  42         void write_data8(uint32_t addr, uint32_t data);
  43         uint32_t read_data8(uint32_t addr);
  44         void write_io8(uint32_t addr, uint32_t data);
  45         uint32_t read_io8(uint32_t addr);
  46
  47         // unique functions
  48         uint8_t* get_vram()
  49         {
  50                 return vram;
  51         }
  52         uint8_t* get_tvram()
  53         {
  54                 return tvram;
  55         }
  56 };
  57
  58 #endif
  59