source/src/vm/pasopia7/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
  23 void KANJIPAC2::reset()
  24 {
  25         ptr = 0;
  26 }
  27
  28 void KANJIPAC2::write_io8(uint32_t addr, uint32_t data)
  29 {
  30         switch(addr & 0xff) {
  31         case 0x18:
  32                 ptr = (ptr & 0x1ff00) | data;
  33                 break;
  34         case 0x19:
  35                 ptr = (ptr & 0x100ff) | (data << 8);
  36                 break;
  37         case 0x1a:
  38                 ptr = (ptr & 0x0ffff) | ((data & 0x01) << 16);
  39                 break;
  40         }
  41 }
  42
  43 uint32_t KANJIPAC2::read_io8(uint32_t addr)
  44 {
  45         return rom[ptr & 0x1ffff];
  46 }
  47
  48 #define STATE_VERSION   1
  49
  50 bool KANJIPAC2::process_state(FILEIO* state_fio, bool loading)
  51 {
  52         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
  53                 return false;
  54         }
  55         state_fio->StateUint32(ptr);
  56         return true;
  57 }