source/src/vm/fmr30/memory.h

   1 /*
   2         FUJITSU FMR-30 Emulator 'eFMR-30'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.12.30 -
   6
   7         [ memory ]
   8 */
   9
  10 #ifndef _FMR30_MEMORY_H_
  11 #define _FMR30_MEMORY_H_
  12
  13 #include "../vm.h"
  14 #include "../../emu.h"
  15 #include "../device.h"
  16
  17 #define SIG_MEMORY_DISP         0
  18 #define SIG_MEMORY_VSYNC        1
  19
  20 class FMR30_MEMORY : public DEVICE
  21 {
  22 private:
  23         DEVICE *d_cpu, *d_dma;
  24
  25         uint8_t* rbank[4096];   // 16MB / 4KB
  26         uint8_t* wbank[4096];
  27         uint8_t wdmy[0x1000];
  28         uint8_t rdmy[0x1000];
  29
  30 #if defined(HAS_I86)
  31         uint8_t ram[0x100000];  // RAM 1MB
  32 #elif defined(HAS_I286)
  33         uint8_t ram[0x400000];  // RAM 1+3MB
  34 #endif
  35         uint8_t vram[0x20000];  // VRAM 32KB * 4pl
  36         uint8_t cvram[0x1000];
  37         uint8_t kvram[0x1000];
  38
  39         uint8_t ipl[0x10000];   // IPL 64KB
  40         uint8_t kanji16[0x40000];       // KANJI(16x16) 256KB
  41
  42         uint8_t mcr1, mcr2, a20;
  43         uint8_t lcdadr, lcdreg[32];
  44         uint16_t dcr1, dcr2;
  45         int kj_h, kj_l, kj_ofs, kj_row;
  46
  47         int blinkcnt;
  48         uint8_t screen_txt[400][648];
  49         uint8_t screen_cg[400][640];
  50
  51         void update_bank();
  52         void draw_text40();
  53         void draw_text80();
  54         void draw_cg();
  55
  56 public:
  57         FMR30_MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  58         {
  59                 set_device_name(_T("Memory Bus"));
  60         }
  61         ~FMR30_MEMORY() {}
  62
  63         // common functions
  64         void initialize();
  65         void reset();
  66         void write_data8(uint32_t addr, uint32_t data);
  67         uint32_t read_data8(uint32_t addr);
  68         void write_io8(uint32_t addr, uint32_t data);
  69         uint32_t read_io8(uint32_t addr);
  70         void event_frame();
  71         bool process_state(FILEIO* state_fio, bool loading);
  72
  73         // unique functions
  74         void set_context_cpu(DEVICE* device)
  75         {
  76                 d_cpu = device;
  77         }
  78         void set_context_dma(DEVICE* device)
  79         {
  80                 d_dma = device;
  81         }
  82         uint8_t* get_vram()
  83         {
  84                 return vram;
  85         }
  86         uint8_t* get_cvram()
  87         {
  88                 return cvram;
  89         }
  90         uint8_t* get_kvram()
  91         {
  92                 return kvram;
  93         }
  94         void draw_screen();
  95 };
  96
  97 #endif
  98