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 #include <string.h>
  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         ROM_BANK32(0);
  61         SetWriteHandler(0x8000,0xFFFF,Mapper7_write);
  62         AddExState(&latche, 1, 0, "LATC");
  63 }
  64
  65 DECLFW(Mapper11_write)
  66 {
  67         ROM_BANK32(V);
  68         VROM_BANK8(V>>4);
  69         latche=V;
  70 }
  71
  72 void Mapper11_init(void)
  73 {
  74         ROM_BANK32(0);
  75         SetWriteHandler(0x8000,0xFFFF,Mapper11_write);
  76         AddExState(&latche, 1, 0, "LATC");
  77 }
  78
  79 static DECLFW(Mapper13_write)
  80 {
  81         setchr4r(0x10,0x1000,V&3);
  82         setprg32(0x8000,(V>>4)&3);
  83         latche=V;
  84 }
  85
  86 static void Mapper13_StateRestore(int version)
  87 {
  88         setchr4r(0x10,0x0000,0);
  89         setchr4r(0x10,0x1000,latche&3);
  90         setprg32(0x8000,(latche>>4)&3);
  91 }
  92
  93 void Mapper13_init(void)
  94 {
  95         SetWriteHandler(0x8000,0xFFFF,Mapper13_write);
  96         GameStateRestore=Mapper13_StateRestore;
  97         AddExState(&latche, 1, 0, "LATC");
  98         AddExState(MapperExRAM, 16384, 0, "CHRR");
  99         SetupCartCHRMapping(0x10, MapperExRAM, 16384, 1);
 100
 101         latche=0;
 102         Mapper13_StateRestore(VERSION_NUMERIC);
 103 }
 104
 105 DECLFW(Mapper34_write)
 106 {
 107 switch(A)
 108  {
 109  case 0x7FFD:ROM_BANK32(V);break;
 110  case 0x7FFE:VROM_BANK4(0x0000,V);break;
 111  case 0x7fff:VROM_BANK4(0x1000,V);break;
 112  }
 113 if(A>=0x8000)
 114  ROM_BANK32(V);
 115 }
 116
 117 void Mapper34_init(void)
 118 {
 119   SetWriteHandler(0x7ffd,0xffff,Mapper34_write);
 120 }
 121
 122 DECLFW(Mapper66_write)
 123 {
 124  VROM_BANK8(V&0xF);
 125  ROM_BANK32((V>>4));
 126  latche=V;
 127 }
 128
 129 void Mapper66_init(void)
 130 {
 131  ROM_BANK32(0);
 132  SetWriteHandler(0x6000,0xffff,Mapper66_write);
 133  AddExState(&latche, 1, 0, "LATC");
 134 }
 135
 136 DECLFW(Mapper152_write)
 137 {
 138  ROM_BANK16(0x8000,(V>>4)&0x7);
 139  VROM_BANK8(V&0xF);
 140  onemir((V>>7)&1);      /* Saint Seiya...hmm. */
 141  latche=V;
 142 }
 143
 144 void Mapper152_init(void)
 145 {
 146  onemir(0);
 147  SetWriteHandler(0x6000,0xffff,Mapper152_write);
 148  AddExState(&latche, 1, 0, "LATC");
 149 }
 150
 151 static DECLFW(Mapper70_write)
 152 {
 153  ROM_BANK16(0x8000,V>>4);
 154  VROM_BANK8(V&0xF);
 155  latche=V;
 156 }
 157
 158 void Mapper70_init(void)
 159 {
 160  SetWriteHandler(0x6000,0xffff,Mapper70_write);
 161  AddExState(&latche, 1, 0, "LATC");
 162 }
 163 /* Should be two separate emulation functions for this "mapper".  Sigh.  URGE TO KILL RISING. */
 164 static DECLFW(Mapper78_write)
 165 {
 166  //printf("$%04x:$%02x\n",A,V);
 167  ROM_BANK16(0x8000,V&0x7);
 168  VROM_BANK8(V>>4);
 169  onemir((V>>3)&1);
 170  latche=V;
 171 }
 172
 173 void Mapper78_init(void)
 174 {
 175  SetWriteHandler(0x8000,0xffff,Mapper78_write);
 176  AddExState(&latche, 1, 0, "LATC");
 177 }
 178
 179 DECLFW(Mapper87_write)
 180 {
 181  VROM_BANK8(V>>1);
 182  latche=V;
 183 }
 184
 185 void Mapper87_init(void)
 186 {
 187  SetWriteHandler(0x6000,0xffff,Mapper87_write);
 188  AddExState(&latche, 1, 0, "LATC");
 189 }
 190
 191 DECLFW(Mapper93_write)
 192 {
 193   ROM_BANK16(0x8000,V>>4);
 194   MIRROR_SET(V&1);
 195   latche=V;
 196 }
 197
 198 void Mapper93_init(void)
 199 {
 200   SetWriteHandler(0x8000,0xffff,Mapper93_write);
 201   AddExState(&latche, 1, 0, "LATC");
 202 }
 203
 204
 205 DECLFW(Mapper94_write)
 206 {
 207  ROM_BANK16(0x8000,V>>2);
 208  latche=V;
 209 }
 210
 211 void Mapper94_init(void)
 212 {
 213   SetWriteHandler(0x8000,0xffff,Mapper94_write);
 214   AddExState(&latche, 1, 0, "LATC");
 215 }
 216
 217 /* I might want to add some code to the mapper 96 PPU hook function
 218    to not change CHR banks if the attribute table is being accessed,
 219    if I make emulation a little more accurate in the future.
 220 */
 221
 222 static uint8 M96LA;
 223 static DECLFW(Mapper96_write)
 224 {
 225  latche=V;
 226  setprg32(0x8000,V&3);
 227  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 228  setchr4r(0x10,0x1000,(latche&4)|3);
 229 }
 230
 231 static void FP_FASTAPASS(1) M96Hook(uint32 A)
 232 {
 233  if((A&0x3000)!=0x2000)
 234   return;
 235  M96LA=(A>>8)&3;
 236  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 237 }
 238
 239 static void M96Sync()
 240 {
 241  setprg32(0x8000,latche&3);
 242  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 243  setchr4r(0x10,0x1000,(latche&4)|3);
 244 }
 245
 246 void Mapper96_init(void)
 247 {
 248  SetWriteHandler(0x8000,0xffff,Mapper96_write);
 249  PPU_hook=M96Hook;
 250  AddExState(&latche, 1, 0, "LATC");
 251  AddExState(&M96LA, 1, 0, "LAVA");
 252  SetupCartCHRMapping(0x10, MapperExRAM, 32768, 1);
 253  latche=M96LA=0;
 254  M96Sync();
 255  GameStateRestore=M96Sync;
 256 }
 257
 258 static DECLFW(Mapper140_write)
 259 {
 260  VROM_BANK8(V&0xF);
 261  ROM_BANK32((V>>4)&0xF);
 262 }
 263
 264 void Mapper140_init(void)
 265 {
 266  ROM_BANK32(0);
 267  SetWriteHandler(0x6000,0x7FFF,Mapper140_write);
 268 }
 269
 270 static void M185Sync()
 271 {
 272  int x;
 273
 274  if(!(mapbyte1[0]&3))
 275 // if(!(mapbyte1[0]==0x21))
 276  {
 277   for(x=0;x<8;x++)
 278    setchr1r(0x10,x<<10,0);
 279   }
 280  else
 281   setchr8(0);
 282 }
 283
 284 static DECLFW(Mapper185_write)
 285 {
 286  mapbyte1[0]=V;
 287  M185Sync();
 288  // printf("Wr: $%04x:$%02x\n",A,V);
 289 }
 290
 291 void Mapper185_init(void)
 292 {
 293  memset(MapperExRAM,0xFF,1024);
 294  MapStateRestore=M185Sync;
 295  mapbyte1[0]=0;
 296  M185Sync();
 297
 298  SetupCartCHRMapping(0x10,MapperExRAM,1024,0);
 299  SetWriteHandler(0x8000,0xFFFF,Mapper185_write);
 300 }