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 void KANJIPAC2::initialize(int id)
  14 {
  15         FILEIO* fio = new FILEIO();
  16         if(fio->Fopen(create_local_path(_T("KANJI.ROM")), FILEIO_READ_BINARY)) {
  17                 fio->Fread(rom, sizeof(rom), 1);
  18                 fio->Fclose();
  19         }
  20         delete fio;
  21
  22         ptr = 0;
  23 }
  24
  25 void KANJIPAC2::write_io8(uint32_t addr, uint32_t data)
  26 {
  27         switch(addr & 0xff) {
  28         case 0x18:
  29                 ptr = (ptr & 0x1ff00) | data;
  30                 break;
  31         case 0x19:
  32                 ptr = (ptr & 0x100ff) | (data << 8);
  33                 break;
  34         case 0x1a:
  35                 ptr = (ptr & 0x0ffff) | ((data & 0x01) << 16);
  36                 break;
  37         }
  38 }
  39
  40 uint32_t KANJIPAC2::read_io8(uint32_t addr)
  41 {
  42         return rom[ptr & 0x1ffff];
  43 }
  44
  45 #define STATE_VERSION   1
  46
  47 bool KANJIPAC2::process_state(FILEIO* state_fio, bool loading)
  48 {
  49         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
  50                 return false;
  51         }
  52         state_fio->StateUint32(ptr);
  53         return true;
  54 }