source/src/vm/fm7/kanjirom.cpp

   1 /*
   2  * Common source code project -> FM-7/77/AV -> Kanji rom
   3  * (C) 2015 K.Ohta <whatisthis.sowhat _at_ gmail.com>
   4  * License: GPLv2
   5  * History:
   6  *  Feb 11, 2015 : Initial
   7  */
   8
   9 #include "../../fileio.h"
  10 #include "emu.h"
  11 #include "fm7_common.h"
  12 #include "kanjirom.h"
  13
  14 KANJIROM::KANJIROM(VM *parent_vm, EMU* parent_emu, bool type_2std): DEVICE(parent_vm, parent_emu)
  15 {
  16         FILEIO *fio;
  17         read_ok = false;
  18
  19         fio = new FILEIO();
  20         memset(data_table, 0xff, 0x20000);
  21         //      read_table[0].memory = data_table;
  22         p_emu = parent_emu;
  23         if(type_2std) {
  24                 class2 = true;
  25                 if(fio->Fopen(create_local_path(_T("KANJI2.ROM")), FILEIO_READ_BINARY)) {
  26                   fio->Fread(data_table, 0x20000, 1);
  27                         fio->Fclose();
  28                         read_ok = true;
  29                 }
  30         } else {
  31                 class2 = false;
  32                 if(fio->Fopen(create_local_path(_T("KANJI1.ROM")), FILEIO_READ_BINARY)) {
  33                   fio->Fread(data_table, 0x20000, 1);
  34                         fio->Fclose();
  35                         read_ok = true;
  36                 } else if(fio->Fopen(create_local_path(_T("KANJI.ROM")), FILEIO_READ_BINARY)) {
  37                   fio->Fread(data_table, 0x20000, 1);
  38                         fio->Fclose();
  39                         read_ok = true;
  40                 }
  41         }
  42         kanjiaddr.d = 0;
  43         delete fio;
  44         return;
  45 }
  46
  47 void KANJIROM::reset(void)
  48 {
  49         kanjiaddr.d = 0;
  50 }
  51
  52 void KANJIROM::write_data8(uint32_t addr, uint32_t data)
  53 {
  54         switch(addr) {
  55         case KANJIROM_ADDR_HI:
  56                 kanjiaddr.b.h = data & 0xff;
  57                 break;
  58         case KANJIROM_ADDR_LO:
  59                 kanjiaddr.b.l = data & 0xff;
  60                 break;
  61         }
  62         return;
  63 }
  64
  65 uint32_t KANJIROM::read_data8(uint32_t addr)
  66 {
  67         if(addr == KANJIROM_DATA_HI) {
  68                 return data_table[(kanjiaddr.d << 1) & 0x1ffff];
  69         } else if(addr == KANJIROM_DATA_LO) {
  70                 return data_table[((kanjiaddr.d << 1) & 0x1ffff) + 1];
  71         } else if(addr == KANJIROM_READSTAT) {
  72                 return (read_ok) ? 0xffffffff : 0x00000000;
  73         } else if((addr >= KANJIROM_DIRECTADDR) && (addr < (KANJIROM_DIRECTADDR + 0x20000))) {
  74                 return data_table[addr - KANJIROM_DIRECTADDR];
  75         }
  76         return 0x00000000;
  77 }
  78
  79 bool KANJIROM::get_readstat(void)
  80 {
  81         return read_ok;
  82 }
  83
  84 void KANJIROM::release()
  85 {
  86 }
  87
  88 #define STATE_VERSION 2
  89 void KANJIROM::save_state(FILEIO *state_fio)
  90 {
  91         state_fio->FputUint32_BE(STATE_VERSION);
  92         state_fio->FputInt32_BE(this_device_id);
  93         p_emu->out_debug_log("Save State: KANJIROM: id=%d ver=%d\n", this_device_id, STATE_VERSION);
  94
  95         state_fio->FputBool(class2);
  96         state_fio->FputBool(read_ok);
  97         state_fio->Fwrite(data_table, sizeof(data_table), 1);
  98         state_fio->FputUint16_BE(kanjiaddr.w.l);
  99 }
 100
 101 bool KANJIROM::load_state(FILEIO *state_fio)
 102 {
 103         uint32_t version;
 104         version = state_fio->FgetUint32_BE();
 105         if(this_device_id != state_fio->FgetInt32_BE()) return false;
 106         p_emu->out_debug_log("Load State: KANJIROM: id=%d ver=%d\n", this_device_id, version);
 107
 108         if(version >= 1) {
 109                 class2 = state_fio->FgetBool();
 110                 read_ok = state_fio->FgetBool();
 111                 state_fio->Fread(data_table, sizeof(data_table), 1);
 112                 if(version == 1) return true;
 113         }
 114         if(version >= 2) {
 115                 kanjiaddr.d = 0;
 116                 kanjiaddr.w.l = state_fio->FgetUint16_BE();
 117                 if(version == 2) return true;
 118         }
 119         return false;
 120 }
 121