mappers/simple.c

   1 /* FCE Ultra - NES/Famicom Emulator
   2  *
   3  * Copyright notice for this file:
   4  *  Copyright (C) 1998 BERO
   5  *  Copyright (C) 2002 Ben Parnell
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "mapinc.h"
  23
  24 static uint8 latche;
  25
  26 static DECLFW(Mapper2_write)
  27 {
  28         latche=V;
  29         ROM_BANK16(0x8000,V);
  30 }
  31
  32 void Mapper2_init(void)
  33 {
  34   SetWriteHandler(0x8000,0xFFFF,Mapper2_write);
  35   AddExState(&latche, 1, 0, "LATC");
  36 }
  37
  38 static DECLFW(Mapper3_write)
  39 {
  40         VROM_BANK8(V);
  41         latche=V;
  42 }
  43
  44 void Mapper3_init(void)
  45 {
  46         SetWriteHandler(0x8000,0xFFFF,Mapper3_write);
  47         AddExState(&latche, 1, 0, "LATC");
  48 }
  49
  50 DECLFW(Mapper7_write)
  51 {
  52       ROM_BANK32(V&0xF);
  53       onemir((V>>4)&1);
  54       latche=V;
  55 }
  56
  57 void Mapper7_init(void)
  58 {
  59         onemir(0);
  60         SetWriteHandler(0x8000,0xFFFF,Mapper7_write);
  61         AddExState(&latche, 1, 0, "LATC");
  62 }
  63
  64 DECLFW(Mapper11_write)
  65 {
  66         ROM_BANK32(V);
  67         VROM_BANK8(V>>4);
  68         latche=V;
  69 }
  70
  71 void Mapper11_init(void)
  72 {
  73         ROM_BANK32(0);
  74         SetWriteHandler(0x8000,0xFFFF,Mapper11_write);
  75         AddExState(&latche, 1, 0, "LATC");
  76 }
  77
  78 static DECLFW(Mapper13_write)
  79 {
  80         setchr4r(0x10,0x1000,V&3);
  81         setprg32(0x8000,(V>>4)&3);
  82         latche=V;
  83 }
  84
  85 static void Mapper13_StateRestore(int version)
  86 {
  87         setchr4r(0x10,0x0000,0);
  88         setchr4r(0x10,0x1000,latche&3);
  89         setprg32(0x8000,(latche>>4)&3);
  90 }
  91
  92 void Mapper13_init(void)
  93 {
  94         SetWriteHandler(0x8000,0xFFFF,Mapper13_write);
  95         GameStateRestore=Mapper13_StateRestore;
  96         AddExState(&latche, 1, 0, "LATC");
  97         AddExState(MapperExRAM, 16384, 0, "CHRR");
  98         SetupCartCHRMapping(0x10, MapperExRAM, 16384, 1);
  99
 100         latche=0;
 101         Mapper13_StateRestore(VERSION_NUMERIC);
 102 }
 103
 104 DECLFW(Mapper34_write)
 105 {
 106 switch(A)
 107  {
 108  case 0x7FFD:ROM_BANK32(V);break;
 109  case 0x7FFE:VROM_BANK4(0x0000,V);break;
 110  case 0x7fff:VROM_BANK4(0x1000,V);break;
 111  }
 112 if(A>=0x8000)
 113  ROM_BANK32(V);
 114 }
 115
 116 void Mapper34_init(void)
 117 {
 118   SetWriteHandler(0x7ffd,0xffff,Mapper34_write);
 119 }
 120
 121 DECLFW(Mapper66_write)
 122 {
 123  VROM_BANK8(V&0xF);
 124  ROM_BANK32((V>>4));
 125  latche=V;
 126 }
 127
 128 void Mapper66_init(void)
 129 {
 130  ROM_BANK32(0);
 131  SetWriteHandler(0x6000,0xffff,Mapper66_write);
 132  AddExState(&latche, 1, 0, "LATC");
 133 }
 134
 135 DECLFW(Mapper152_write)
 136 {
 137  ROM_BANK16(0x8000,(V>>4)&0x7);
 138  VROM_BANK8(V&0xF);
 139  onemir((V>>7)&1);      /* Saint Seiya...hmm. */
 140  latche=V;
 141 }
 142
 143 void Mapper152_init(void)
 144 {
 145  onemir(0);
 146  SetWriteHandler(0x6000,0xffff,Mapper152_write);
 147  AddExState(&latche, 1, 0, "LATC");
 148 }
 149
 150 static DECLFW(Mapper70_write)
 151 {
 152  ROM_BANK16(0x8000,V>>4);
 153  VROM_BANK8(V&0xF);
 154  latche=V;
 155 }
 156
 157 void Mapper70_init(void)
 158 {
 159  SetWriteHandler(0x6000,0xffff,Mapper70_write);
 160  AddExState(&latche, 1, 0, "LATC");
 161 }
 162 /* Should be two separate emulation functions for this "mapper".  Sigh.  URGE TO KILL RISING. */
 163 static DECLFW(Mapper78_write)
 164 {
 165  //printf("$%04x:$%02x\n",A,V);
 166  ROM_BANK16(0x8000,V&0x7);
 167  VROM_BANK8(V>>4);
 168  onemir((V>>3)&1);
 169  latche=V;
 170 }
 171
 172 void Mapper78_init(void)
 173 {
 174  SetWriteHandler(0x8000,0xffff,Mapper78_write);
 175  AddExState(&latche, 1, 0, "LATC");
 176 }
 177
 178 DECLFW(Mapper87_write)
 179 {
 180  VROM_BANK8(V>>1);
 181  latche=V;
 182 }
 183
 184 void Mapper87_init(void)
 185 {
 186  SetWriteHandler(0x6000,0xffff,Mapper87_write);
 187  AddExState(&latche, 1, 0, "LATC");
 188 }
 189
 190 DECLFW(Mapper93_write)
 191 {
 192   ROM_BANK16(0x8000,V>>4);
 193   MIRROR_SET(V&1);
 194   latche=V;
 195 }
 196
 197 void Mapper93_init(void)
 198 {
 199   SetWriteHandler(0x8000,0xffff,Mapper93_write);
 200   AddExState(&latche, 1, 0, "LATC");
 201 }
 202
 203
 204 DECLFW(Mapper94_write)
 205 {
 206  ROM_BANK16(0x8000,V>>2);
 207  latche=V;
 208 }
 209
 210 void Mapper94_init(void)
 211 {
 212   SetWriteHandler(0x8000,0xffff,Mapper94_write);
 213   AddExState(&latche, 1, 0, "LATC");
 214 }
 215
 216 /* I might want to add some code to the mapper 96 PPU hook function
 217    to not change CHR banks if the attribute table is being accessed,
 218    if I make emulation a little more accurate in the future.
 219 */
 220
 221 static uint8 M96LA;
 222 static DECLFW(Mapper96_write)
 223 {
 224  latche=V;
 225  setprg32(0x8000,V&3);
 226  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 227  setchr4r(0x10,0x1000,(latche&4)|3);
 228 }
 229
 230 static void FP_FASTAPASS(1) M96Hook(uint32 A)
 231 {
 232  if(A<0x2000)
 233   return;
 234  M96LA=(A>>8)&3;
 235  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 236 }
 237
 238 static void M96Sync()
 239 {
 240  setprg32(0x8000,latche&3);
 241  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 242  setchr4r(0x10,0x1000,(latche&4)|3);
 243 }
 244
 245 void Mapper96_init(void)
 246 {
 247  SetWriteHandler(0x8000,0xffff,Mapper96_write);
 248  PPU_hook=M96Hook;
 249  AddExState(&latche, 1, 0, "LATC");
 250  AddExState(&M96LA, 1, 0, "LAVA");
 251  SetupCartCHRMapping(0x10, MapperExRAM, 32768, 1);
 252  latche=M96LA=0;
 253  M96Sync();
 254  GameStateRestore=M96Sync;
 255 }
 256
 257 static DECLFW(Mapper140_write)
 258 {
 259  VROM_BANK8(V&0xF);
 260  ROM_BANK32((V>>4)&0xF);
 261 }
 262
 263 void Mapper140_init(void)
 264 {
 265  ROM_BANK32(0);
 266  SetWriteHandler(0x6000,0x7FFF,Mapper140_write);
 267 }
 268
 269 static void M185Sync()
 270 {
 271  int x;
 272
 273  if(!(mapbyte1[0]&3))
 274 // if(!(mapbyte1[0]==0x21))
 275  {
 276   for(x=0;x<8;x++)
 277    setchr1r(0x10,x<<10,0);
 278   }
 279  else
 280   setchr8(0);
 281 }
 282
 283 static DECLFW(Mapper185_write)
 284 {
 285  mapbyte1[0]=V;
 286  M185Sync();
 287  // printf("Wr: $%04x:$%02x\n",A,V);
 288 }
 289
 290 void Mapper185_init(void)
 291 {
 292  memset(MapperExRAM,0xFF,1024);
 293  MapStateRestore=M185Sync;
 294  mapbyte1[0]=0;
 295  M185Sync();
 296
 297  SetupCartCHRMapping(0x10,MapperExRAM,1024,0);
 298  SetWriteHandler(0x8000,0xFFFF,Mapper185_write);
 299 }