source/src/vm/mz2800/memory.h

   1 /*
   2         SHARP MZ-2800 Emulator 'EmuZ-2800'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2007.08.13 -
   6
   7         [ memory ]
   8 */
   9
  10 #ifndef _MZ2800_MEMORY_H_
  11 #define _MZ2800_MEMORY_H_
  12
  13 #include "../vm.h"
  14 #include "../../emu.h"
  15 #include "../device.h"
  16
  17 class MZ2800_MEMORY : public DEVICE
  18 {
  19 private:
  20         DEVICE* d_crtc;
  21
  22         uint8_t* rbank[8192];   // 16MB / 2KB
  23         uint8_t* wbank[8192];
  24         uint8_t wdmy[0x800];
  25         uint8_t rdmy[0x800];
  26         uint8_t ram[0xc0000];   // Main RAM 768KB
  27         uint8_t ext[0x600000];  // Ext RAM 6MB
  28         uint8_t vram[0x80000];  // VRAM 512KB
  29         uint8_t tvram[0x2000];  // Text VRAM 6KB + dummy 2KB
  30         uint8_t pcg[0x4000];    // PCG 8KB (even addr only)
  31         uint8_t ipl[0x10000];   // IPL 64KB
  32         uint8_t dic[0x40000];   // Dictionary ROM 256KB
  33         uint8_t kanji[0x80000]; // Kanji ROM 256KB (even addr only)
  34
  35         uint32_t mem_window;
  36         uint8_t vram_bank, dic_bank, kanji_bank;
  37
  38 public:
  39         MZ2800_MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  40         {
  41                 set_device_name(_T("Memory Bus"));
  42         }
  43         ~MZ2800_MEMORY() {}
  44
  45         // common functions
  46         void initialize();
  47         void reset();
  48         void write_data8(uint32_t addr, uint32_t data);
  49         uint32_t read_data8(uint32_t addr);
  50         void write_dma_data8(uint32_t addr, uint32_t data);
  51         uint32_t read_dma_data8(uint32_t addr);
  52         void write_io8(uint32_t addr, uint32_t data);
  53         uint32_t read_io8(uint32_t addr);
  54         bool process_state(FILEIO* state_fio, bool loading);
  55
  56         // unitque functions
  57         void set_context_crtc(DEVICE* device)
  58         {
  59                 d_crtc = device;
  60         }
  61         uint8_t* get_vram()
  62         {
  63                 return vram;
  64         }
  65         uint8_t* get_tvram()
  66         {
  67                 return tvram;
  68         }
  69         uint8_t* get_kanji()
  70         {
  71                 return kanji;
  72         }
  73         uint8_t* get_pcg()
  74         {
  75                 return pcg;
  76         }
  77 };
  78
  79 #endif
  80