source/src/vm/pasopia7/memory.h

   1 /*
   2         TOSHIBA PASOPIA 7 Emulator 'EmuPIA7'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.09.20 -
   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_1_A    0
  18 #define SIG_MEMORY_I8255_1_B    1
  19 #define SIG_MEMORY_I8255_1_C    2
  20
  21 class MEMORY : public DEVICE
  22 {
  23 private:
  24         DEVICE *d_iobus, *d_pio0, *d_pio2;
  25
  26         uint8_t bios[0x4000];
  27         uint8_t basic[0x8000];
  28         uint8_t ram[0x10000];
  29         uint8_t vram[0x10000];  // blue, red, green + text, attribute
  30         uint8_t pal[0x10];
  31         uint8_t wdmy[0x1000];
  32         uint8_t rdmy[0x1000];
  33         uint8_t* wbank[16];
  34         uint8_t* rbank[16];
  35
  36         uint8_t mem_map, plane, attr_data, attr_latch;
  37         bool vram_sel, pal_sel, attr_wrap;
  38
  39         void update_memory_map();
  40
  41 public:
  42         MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  43         {
  44                 set_device_name(_T("Memory Bus"));
  45         }
  46         ~MEMORY() {}
  47
  48         // common functions
  49         void initialize();
  50         void reset();
  51         void write_data8(uint32_t addr, uint32_t data);
  52         uint32_t read_data8(uint32_t addr);
  53         void write_io8(uint32_t addr, uint32_t data);
  54         void write_signal(int id, uint32_t data, uint32_t mask);
  55         void decl_state();
  56         void save_state(FILEIO* state_fio);
  57         bool load_state(FILEIO* state_fio);
  58
  59         // unique functions
  60         void set_context_iobus(DEVICE* device)
  61         {
  62                 d_iobus = device;
  63         }
  64         void set_context_pio0(DEVICE* device)
  65         {
  66                 d_pio0 = device;
  67         }
  68         void set_context_pio2(DEVICE* device)
  69         {
  70                 d_pio2 = device;
  71         }
  72         uint8_t* get_ram()
  73         {
  74                 return ram;
  75         }
  76         uint8_t* get_vram()
  77         {
  78                 return vram;
  79         }
  80         uint8_t* get_pal()
  81         {
  82                 return pal;
  83         }
  84 };
  85
  86 #endif
  87