source/src/vm/pasopia/kanjipac2.cpp

   1 /*
   2         TOSHIBA PASOPIA Emulator 'EmuPIA'
   3         TOSHIBA PASOPIA 7 Emulator 'EmuPIA7'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2006.09.20 -
   7
   8         [ kanji rom pac 2 ]
   9 */
  10
  11 #include "kanjipac2.h"
  12
  13 namespace PASOPIA {
  14
  15 void KANJIPAC2::initialize(int id)
  16 {
  17         FILEIO* fio = new FILEIO();
  18         if(fio->Fopen(create_local_path(_T("KANJI.ROM")), FILEIO_READ_BINARY)) {
  19                 fio->Fread(rom, sizeof(rom), 1);
  20                 fio->Fclose();
  21         }
  22         delete fio;
  23
  24         ptr = 0;
  25 }
  26
  27 void KANJIPAC2::write_io8(uint32_t addr, uint32_t data)
  28 {
  29         switch(addr & 0xff) {
  30         case 0x18:
  31                 ptr = (ptr & 0x1ff00) | data;
  32                 break;
  33         case 0x19:
  34                 ptr = (ptr & 0x100ff) | (data << 8);
  35                 break;
  36         case 0x1a:
  37                 ptr = (ptr & 0x0ffff) | ((data & 0x01) << 16);
  38                 break;
  39         }
  40 }
  41
  42 uint32_t KANJIPAC2::read_io8(uint32_t addr)
  43 {
  44         return rom[ptr & 0x1ffff];
  45 }
  46
  47 #define STATE_VERSION   1
  48
  49 bool KANJIPAC2::process_state(FILEIO* state_fio, bool loading)
  50 {
  51         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
  52                 return false;
  53         }
  54         state_fio->StateUint32(ptr);
  55         return true;
  56 }
  57
  58 }