Mapper 470

src/CMakeLists.txt

@@ -468,6 +468,7 @@ set(SRC_CORE
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/vrc7.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/vrc7p.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/yoko.cpp
+  	${CMAKE_CURRENT_SOURCE_DIR}/boards/inx007t.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/input/arkanoid.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/input/bworld.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/input/cursor.cpp

src/boards/inx007t.cpp

@@ -0,0 +1,88 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2022 Cluster
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * NES 2.0 Mapper 470 denotes the INX_007T_V01 multicart circuit board, 
+ * used for the Retro-Bit re-release of Battletoads and Double Dragon.
+ * It is basically AOROM with an additional outer bank register at $5000-$5FFF
+ * whose data selects the 256 KiB outer bank.
+ *
+ * $5000-$5FFF
+ * 7  bit  0
+ * ---- ----
+ * xxxx xxOO
+ *        ||
+ *        ++- Select outer 256 KB PRG ROM bank for CPU $8000-$FFFF
+ *
+ * $8000-$FFFF
+ * 7  bit  0
+ * ---- ----
+ * xxxM xPPP
+ *    |  |||
+ *    |  +++- Select inner 32 KB PRG ROM bank for CPU $8000-$FFFF
+ *    +------ Select 1 KB VRAM page for all 4 nametables
+ * 
+ */
+
+#include "mapinc.h"
+
+static uint8 latch_out, latch_in;
+
+static void INX_007T_Sync() {
+	setprg32(0x8000, (latch_in & 0b111) | (latch_out << 3));
+	setmirror(MI_0 + ((latch_in >> 4) & 1));
+	setchr8(0);
+}
+
+static void StateRestore(int version) {
+	INX_007T_Sync();
+}
+
+static DECLFW(INX_007T_WriteLow)
+{
+	latch_out = V;
+	INX_007T_Sync();
+}
+
+static DECLFW(INX_007T_WriteHi)
+{
+	latch_in = V;
+	INX_007T_Sync();
+}
+
+static void INX_007T_Power(void) {
+	latch_in = latch_out = 0;
+	INX_007T_Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x5000,0x5FFF, INX_007T_WriteLow);
+	SetWriteHandler(0x8000, 0xFFFF, INX_007T_WriteHi);
+}
+
+static void INX_007T_Reset(void) {
+	latch_in = latch_out = 0;
+	INX_007T_Sync();
+}
+
+void INX_007T_Init(CartInfo *info) {
+	info->Power = INX_007T_Power;
+	info->Reset = INX_007T_Reset;
+	GameStateRestore = StateRestore;
+	SetupCartMirroring(MI_0, 0, NULL);
+	AddExState(&latch_out, 1, 0, "LATO");
+	AddExState(&latch_in, 1, 0, "LATI");
+}

src/ines.cpp

@@ -733,6 +733,7 @@ BMAPPINGLocal bmap[] = {
 	{"COOLGIRL",			342, COOLGIRL_Init },
 
 	{"Impact Soft MMC3 Flash Board",	406, Mapper406_Init },
+	{"INX_007T_V01",		470, INX_007T_Init },
 
 	{"KONAMI QTAi Board",	547, QTAi_Init },
 

src/ines.h

@@ -273,6 +273,8 @@ void Mapper253_Init(CartInfo *);
 void Mapper254_Init(CartInfo *);
 void Mapper406_Init(CartInfo *);
 
+void INX_007T_Init(CartInfo* info);
+
 typedef struct {
 	const char *name;
 	int32 number;

vc/vc14_fceux.vcxproj

@@ -484,6 +484,7 @@ xcopy /y /d "$(ProjectDir)\..\src\drivers\win\7z_64.dll" "$(OutDir)"</Command>
     <ClCompile Include="..\src\boards\fns.cpp" />
     <ClCompile Include="..\src\boards\hp10xx_hp20xx.cpp" />
     <ClCompile Include="..\src\boards\hp898f.cpp" />
+    <ClCompile Include="..\src\boards\inx007t.cpp" />
     <ClCompile Include="..\src\boards\ks7010.cpp" />
     <ClCompile Include="..\src\boards\ks7012.cpp" />
     <ClCompile Include="..\src\boards\ks7013.cpp" />

vc/vc14_fceux.vcxproj.filters

@@ -1111,6 +1111,12 @@
     <ClCompile Include="..\src\boards\bs4xxxr.cpp">
       <Filter>boards</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\boards\coolgirl.cpp">
+      <Filter>boards</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\boards\inx007t.cpp">
+      <Filter>boards</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\drivers\common\args.h">