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         X6502_Rebase();
  31 }
  32
  33 void Mapper2_init(void)
  34 {
  35   SetWriteHandler(0x8000,0xFFFF,Mapper2_write);
  36   AddExState(&latche, 1, 0, "LATC");
  37 }
  38
  39 static DECLFW(Mapper3_write)
  40 {
  41         VROM_BANK8(V);
  42         latche=V;
  43 }
  44
  45 void Mapper3_init(void)
  46 {
  47         SetWriteHandler(0x8000,0xFFFF,Mapper3_write);
  48         AddExState(&latche, 1, 0, "LATC");
  49 }
  50
  51 DECLFW(Mapper7_write)
  52 {
  53       ROM_BANK32(V&0xF);
  54       onemir((V>>4)&1);
  55       latche=V;
  56       X6502_Rebase();
  57 }
  58
  59 void Mapper7_init(void)
  60 {
  61         onemir(0);
  62         ROM_BANK32(0);
  63         SetWriteHandler(0x8000,0xFFFF,Mapper7_write);
  64         AddExState(&latche, 1, 0, "LATC");
  65 }
  66
  67 DECLFW(Mapper11_write)
  68 {
  69         ROM_BANK32(V);
  70         VROM_BANK8(V>>4);
  71         latche=V;
  72         X6502_Rebase();
  73 }
  74
  75 void Mapper11_init(void)
  76 {
  77         ROM_BANK32(0);
  78         SetWriteHandler(0x8000,0xFFFF,Mapper11_write);
  79         AddExState(&latche, 1, 0, "LATC");
  80 }
  81
  82 static DECLFW(Mapper13_write)
  83 {
  84         setchr4r(0x10,0x1000,V&3);
  85         setprg32(0x8000,(V>>4)&3);
  86         latche=V;
  87         X6502_Rebase();
  88 }
  89
  90 static void Mapper13_StateRestore(int version)
  91 {
  92         setchr4r(0x10,0x0000,0);
  93         setchr4r(0x10,0x1000,latche&3);
  94         setprg32(0x8000,(latche>>4)&3);
  95         X6502_Rebase();
  96 }
  97
  98 void Mapper13_init(void)
  99 {
 100         SetWriteHandler(0x8000,0xFFFF,Mapper13_write);
 101         GameStateRestore=Mapper13_StateRestore;
 102         AddExState(&latche, 1, 0, "LATC");
 103         AddExState(MapperExRAM, 16384, 0, "CHRR");
 104         SetupCartCHRMapping(0x10, MapperExRAM, 16384, 1);
 105
 106         latche=0;
 107         Mapper13_StateRestore(VERSION_NUMERIC);
 108 }
 109
 110 DECLFW(Mapper34_write)
 111 {
 112 switch(A)
 113  {
 114  case 0x7FFD:ROM_BANK32(V);
 115              X6502_Rebase();break;
 116  case 0x7FFE:VROM_BANK4(0x0000,V);break;
 117  case 0x7fff:VROM_BANK4(0x1000,V);break;
 118  }
 119  if(A>=0x8000)
 120  {
 121   ROM_BANK32(V);
 122   X6502_Rebase();
 123  }
 124 }
 125
 126 void Mapper34_init(void)
 127 {
 128   SetWriteHandler(0x7ffd,0xffff,Mapper34_write);
 129 }
 130
 131 DECLFW(Mapper66_write)
 132 {
 133  VROM_BANK8(V&0xF);
 134  ROM_BANK32((V>>4));
 135  latche=V;
 136  X6502_Rebase();
 137 }
 138
 139 void Mapper66_init(void)
 140 {
 141  ROM_BANK32(0);
 142  SetWriteHandler(0x6000,0xffff,Mapper66_write);
 143  AddExState(&latche, 1, 0, "LATC");
 144 }
 145
 146 DECLFW(Mapper152_write)
 147 {
 148  ROM_BANK16(0x8000,(V>>4)&0x7);
 149  VROM_BANK8(V&0xF);
 150  onemir((V>>7)&1);      /* Saint Seiya...hmm. */
 151  latche=V;
 152  X6502_Rebase();
 153 }
 154
 155 void Mapper152_init(void)
 156 {
 157  onemir(0);
 158  SetWriteHandler(0x6000,0xffff,Mapper152_write);
 159  AddExState(&latche, 1, 0, "LATC");
 160 }
 161
 162 static DECLFW(Mapper70_write)
 163 {
 164  ROM_BANK16(0x8000,V>>4);
 165  VROM_BANK8(V&0xF);
 166  latche=V;
 167  X6502_Rebase();
 168 }
 169
 170 void Mapper70_init(void)
 171 {
 172  SetWriteHandler(0x6000,0xffff,Mapper70_write);
 173  AddExState(&latche, 1, 0, "LATC");
 174 }
 175 /* Should be two separate emulation functions for this "mapper".  Sigh.  URGE TO KILL RISING. */
 176 static DECLFW(Mapper78_write)
 177 {
 178  //printf("$%04x:$%02x\n",A,V);
 179  ROM_BANK16(0x8000,V&0x7);
 180  VROM_BANK8(V>>4);
 181  onemir((V>>3)&1);
 182  latche=V;
 183  X6502_Rebase();
 184 }
 185
 186 void Mapper78_init(void)
 187 {
 188  SetWriteHandler(0x8000,0xffff,Mapper78_write);
 189  AddExState(&latche, 1, 0, "LATC");
 190 }
 191
 192 DECLFW(Mapper87_write)
 193 {
 194  VROM_BANK8(V>>1);
 195  latche=V;
 196 }
 197
 198 void Mapper87_init(void)
 199 {
 200  SetWriteHandler(0x6000,0xffff,Mapper87_write);
 201  AddExState(&latche, 1, 0, "LATC");
 202 }
 203
 204 DECLFW(Mapper93_write)
 205 {
 206   ROM_BANK16(0x8000,V>>4);
 207   MIRROR_SET(V&1);
 208   latche=V;
 209   X6502_Rebase();
 210 }
 211
 212 void Mapper93_init(void)
 213 {
 214   SetWriteHandler(0x8000,0xffff,Mapper93_write);
 215   AddExState(&latche, 1, 0, "LATC");
 216 }
 217
 218
 219 DECLFW(Mapper94_write)
 220 {
 221  ROM_BANK16(0x8000,V>>2);
 222  latche=V;
 223  X6502_Rebase();
 224 }
 225
 226 void Mapper94_init(void)
 227 {
 228   SetWriteHandler(0x8000,0xffff,Mapper94_write);
 229   AddExState(&latche, 1, 0, "LATC");
 230 }
 231
 232 /* I might want to add some code to the mapper 96 PPU hook function
 233    to not change CHR banks if the attribute table is being accessed,
 234    if I make emulation a little more accurate in the future.
 235 */
 236
 237 static uint8 M96LA;
 238 static DECLFW(Mapper96_write)
 239 {
 240  latche=V;
 241  setprg32(0x8000,V&3);
 242  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 243  setchr4r(0x10,0x1000,(latche&4)|3);
 244  X6502_Rebase();
 245 }
 246
 247 static void FP_FASTAPASS(1) M96Hook(uint32 A)
 248 {
 249  if((A&0x3000)!=0x2000)
 250   return;
 251  M96LA=(A>>8)&3;
 252  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 253 }
 254
 255 static void M96Sync()
 256 {
 257  setprg32(0x8000,latche&3);
 258  setchr4r(0x10,0x0000,(latche&4)|M96LA);
 259  setchr4r(0x10,0x1000,(latche&4)|3);
 260  X6502_Rebase();
 261 }
 262
 263 void Mapper96_init(void)
 264 {
 265  SetWriteHandler(0x8000,0xffff,Mapper96_write);
 266  PPU_hook=M96Hook;
 267  AddExState(&latche, 1, 0, "LATC");
 268  AddExState(&M96LA, 1, 0, "LAVA");
 269  SetupCartCHRMapping(0x10, MapperExRAM, 32768, 1);
 270  latche=M96LA=0;
 271  M96Sync();
 272  GameStateRestore=M96Sync;
 273 }
 274
 275 static DECLFW(Mapper140_write)
 276 {
 277  VROM_BANK8(V&0xF);
 278  ROM_BANK32((V>>4)&0xF);
 279  X6502_Rebase();
 280 }
 281
 282 void Mapper140_init(void)
 283 {
 284  ROM_BANK32(0);
 285  SetWriteHandler(0x6000,0x7FFF,Mapper140_write);
 286 }
 287
 288 static void M185Sync()
 289 {
 290  int x;
 291
 292  if(!(mapbyte1[0]&3))
 293 // if(!(mapbyte1[0]==0x21))
 294  {
 295   for(x=0;x<8;x++)
 296    setchr1r(0x10,x<<10,0);
 297   }
 298  else
 299   setchr8(0);
 300 }
 301
 302 static DECLFW(Mapper185_write)
 303 {
 304  mapbyte1[0]=V;
 305  M185Sync();
 306  // printf("Wr: $%04x:$%02x\n",A,V);
 307 }
 308
 309 void Mapper185_init(void)
 310 {
 311  memset(MapperExRAM,0xFF,1024);
 312  MapStateRestore=M185Sync;
 313  mapbyte1[0]=0;
 314  M185Sync();
 315
 316  SetupCartCHRMapping(0x10,MapperExRAM,1024,0);
 317  SetWriteHandler(0x8000,0xFFFF,Mapper185_write);
 318 }