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 _N5200_MEMORY_H_
  11 #define _N5200_MEMORY_H_
  12
  13 #include "../vm.h"
  14 #include "../../emu.h"
  15 #include "../device.h"
  16
  17 namespace N5200 {
  18
  19 class MEMORY : public DEVICE
  20 {
  21 private:
  22         uint8_t* rbank[8192];   // 16MB / 2KB
  23         uint8_t* wbank[8192];
  24         uint8_t wdmy[0x800];
  25         uint8_t rdmy[0x800];
  26
  27         uint8_t ram[0xc0000];           // RAM 768KB
  28         uint8_t exram[0x100000];                // Ext RAM 1MB
  29         uint8_t vram[0x60000];          // VRAM 384KB ???
  30         uint8_t tvram[0x7800];          // TVRAM 32KB ???
  31         uint8_t backup[0x8200];         // Battery BackUp 32KB ???
  32         uint8_t ipl[0x10000];           // IPL 64KB
  33
  34         bool protect;
  35
  36 public:
  37         MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  38         {
  39                 set_device_name(_T("Memory Bus"));
  40         }
  41         ~MEMORY() {}
  42
  43         // common functions
  44         void initialize();
  45         void release();
  46         void reset();
  47         void write_data8(uint32_t addr, uint32_t data);
  48         uint32_t read_data8(uint32_t addr);
  49         void write_io8(uint32_t addr, uint32_t data);
  50         uint32_t read_io8(uint32_t addr);
  51
  52         // unique functions
  53         uint8_t* get_vram()
  54         {
  55                 return vram;
  56         }
  57         uint8_t* get_tvram()
  58         {
  59                 return tvram;
  60         }
  61 };
  62
  63 }
  64 #endif
  65