-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- * Copyright (C) 2005 CaH4e3
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "mapinc.h"
-
-static uint8 is_large_banks;
-static uint8 large_bank;
-static uint8 prg_bank;
-static uint8 chr_bank;
-static uint8 bank_mode;
-static uint8 mirroring;
-static SFORMAT StateRegs[]=
-{
- {&large_bank, 1, "LB"},
- {&prg_bank, 1, "PRG"},
- {&chr_bank, 1, "CHR"},
- {&bank_mode, 1, "BM"},
- {&mirroring, 1, "MIRR"},
- {0}
-};
-
-static void Sync(void)
-{
- switch (bank_mode)
- {
- case 0x00:
- case 0x10: setprg16(0x8000,large_bank|prg_bank);
- setprg16(0xC000,large_bank|7);
- break;
- case 0x20: setprg32(0x8000,(large_bank|prg_bank)>>1);
- break;
- case 0x30: setprg16(0x8000,large_bank|prg_bank);
- setprg16(0xC000,large_bank|prg_bank);
- break;
- }
- setmirror(mirroring);
- if(!is_large_banks)
- setchr8(chr_bank);
-}
-
-static DECLFR(BMC70in1Read)
-{
- if(bank_mode==0x10)
- if(is_large_banks)
- return CartBR((A&0xFFF0)|0x06);
- else
- return CartBR((A&0xFFF0)|0x0d);
- else
- return CartBR(A);
-}
-
-static DECLFW(BMC70in1Write)
-{
- if(A&0x4000)
- {
- bank_mode=A&0x30;
- prg_bank=A&7;
- }
- else
- {
- mirroring=((A&0x20)>>5)^1;
- if(is_large_banks)
- large_bank=(A&3)<<3;
- else
- chr_bank=A&7;
- }
- Sync();
-}
-
-static void BMC70in1Power(void)
-{
- setchr8(0);
- bank_mode=0;
- large_bank=0;
- Sync();
- SetReadHandler(0x8000,0xFFFF,BMC70in1Read);
- SetWriteHandler(0x8000,0xffff,BMC70in1Write);
-}
-
-static void StateRestore(int version)
-{
- Sync();
-}
-
-void BMC70in1_Init(CartInfo *info)
-{
- is_large_banks=0;
- info->Power=BMC70in1Power;
- GameStateRestore=StateRestore;
- AddExState(&StateRegs, ~0, 0, 0);
-}
-
-void BMC70in1B_Init(CartInfo *info)
-{
- is_large_banks=1;
- info->Power=BMC70in1Power;
- GameStateRestore=StateRestore;
- AddExState(&StateRegs, ~0, 0, 0);
-}
+/* FCE Ultra - NES/Famicom Emulator\r
+ *\r
+ * Copyright notice for this file:\r
+ * Copyright (C) 2005 CaH4e3\r
+ *\r
+ * This program is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the Free Software\r
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r
+ */\r
+\r
+#include "mapinc.h"\r
+\r
+static uint8 is_large_banks, hw_switch;\r
+static uint8 large_bank;\r
+static uint8 prg_bank;\r
+static uint8 chr_bank;\r
+static uint8 bank_mode;\r
+static uint8 mirroring;\r
+static SFORMAT StateRegs[]=\r
+{\r
+ {&large_bank, 1, "LB"},\r
+ {&hw_switch, 1, "DIPSW"},\r
+ {&prg_bank, 1, "PRG"},\r
+ {&chr_bank, 1, "CHR"},\r
+ {&bank_mode, 1, "BM"},\r
+ {&mirroring, 1, "MIRR"},\r
+ {0}\r
+};\r
+\r
+static void Sync(void)\r
+{\r
+ switch (bank_mode)\r
+ {\r
+ case 0x00:\r
+ case 0x10: setprg16(0x8000,large_bank|prg_bank);\r
+ setprg16(0xC000,large_bank|7);\r
+ break;\r
+ case 0x20: setprg32(0x8000,(large_bank|prg_bank)>>1);\r
+ break;\r
+ case 0x30: setprg16(0x8000,large_bank|prg_bank);\r
+ setprg16(0xC000,large_bank|prg_bank);\r
+ break;\r
+ }\r
+ setmirror(mirroring);\r
+ if(!is_large_banks)\r
+ setchr8(chr_bank);\r
+}\r
+\r
+static DECLFR(BMC70in1Read)\r
+{\r
+ if(bank_mode==0x10)\r
+// if(is_large_banks)\r
+ return CartBR((A&0xFFF0)|hw_switch);\r
+// else\r
+// return CartBR((A&0xFFF0)|hw_switch);\r
+ else\r
+ return CartBR(A);\r
+}\r
+\r
+static DECLFW(BMC70in1Write)\r
+{\r
+ if(A&0x4000)\r
+ {\r
+ bank_mode=A&0x30;\r
+ prg_bank=A&7;\r
+ }\r
+ else\r
+ {\r
+ mirroring=((A&0x20)>>5)^1;\r
+ if(is_large_banks)\r
+ large_bank=(A&3)<<3;\r
+ else\r
+ chr_bank=A&7;\r
+ }\r
+ Sync();\r
+}\r
+\r
+static void BMC70in1Reset(void)\r
+{\r
+ bank_mode=0;\r
+ large_bank=0;\r
+ Sync();\r
+ hw_switch++;\r
+ hw_switch&=0xf;\r
+}\r
+\r
+static void BMC70in1Power(void)\r
+{\r
+ setchr8(0);\r
+ bank_mode=0;\r
+ large_bank=0;\r
+ Sync();\r
+ SetReadHandler(0x8000,0xFFFF,BMC70in1Read);\r
+ SetWriteHandler(0x8000,0xffff,BMC70in1Write);\r
+}\r
+\r
+static void StateRestore(int version)\r
+{\r
+ Sync();\r
+}\r
+\r
+void BMC70in1_Init(CartInfo *info)\r
+{\r
+ is_large_banks=0;\r
+ hw_switch=0xd;\r
+ info->Power=BMC70in1Power;\r
+ info->Reset=BMC70in1Reset;\r
+ GameStateRestore=StateRestore;\r
+ AddExState(&StateRegs, ~0, 0, 0);\r
+}\r
+\r
+void BMC70in1B_Init(CartInfo *info)\r
+{\r
+ is_large_banks=1;\r
+ hw_switch=0x6;\r
+ info->Power=BMC70in1Power;\r
+ info->Reset=BMC70in1Reset;\r
+ GameStateRestore=StateRestore;\r
+ AddExState(&StateRegs, ~0, 0, 0);\r
+}\r
notaz.gp2x.de / fceu.git / blobdiff