source/src/vm/pasopia/memory.h

   1 /*
   2         TOSHIBA PASOPIA Emulator 'EmuPIA'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.12.28 -
   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 #define SIG_MEMORY_I8255_0_A    0
  18 #define SIG_MEMORY_I8255_0_B    1
  19 #define SIG_MEMORY_I8255_1_C    2
  20
  21 class MEMORY : public DEVICE
  22 {
  23 private:
  24         DEVICE *d_pio0, *d_pio1, *d_pio2;
  25
  26         uint8_t rom[0x8000];
  27         uint8_t ram[0x10000];
  28         uint8_t vram[0x8000];
  29         uint8_t attr[0x8000];
  30         uint8_t wdmy[0x1000];
  31         uint8_t rdmy[0x1000];
  32         uint8_t* wbank[16];
  33         uint8_t* rbank[16];
  34         uint16_t vram_ptr;
  35         uint8_t vram_data, mem_map;
  36
  37 public:
  38         MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  39         {
  40                 set_device_name(_T("Memory Bus"));
  41         }
  42         ~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 write_io8(uint32_t addr, uint32_t data);
  50         void write_signal(int id, uint32_t data, uint32_t mask);
  51         void decl_state();
  52         void save_state(FILEIO* state_fio);
  53         bool load_state(FILEIO* state_fio);
  54
  55         // unique functions
  56         void set_context_pio0(DEVICE* device)
  57         {
  58                 d_pio0 = device;
  59         }
  60         void set_context_pio1(DEVICE* device)
  61         {
  62                 d_pio1 = device;
  63         }
  64         void set_context_pio2(DEVICE* device)
  65         {
  66                 d_pio2 = device;
  67         }
  68         uint8_t* get_vram()
  69         {
  70                 return vram;
  71         }
  72         uint8_t* get_attr()
  73         {
  74                 return attr;
  75         }
  76         void load_ipl();
  77 };
  78
  79 #endif