Add mappers 451 and 471

src/CMakeLists.txt

@@ -447,7 +447,9 @@ set(SRC_CORE
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/34.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/354.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/boards/413.cpp
-  	${CMAKE_CURRENT_SOURCE_DIR}/boards/36.cpp
+	${CMAKE_CURRENT_SOURCE_DIR}/boards/471.cpp
+	${CMAKE_CURRENT_SOURCE_DIR}/boards/451.cpp
+	${CMAKE_CURRENT_SOURCE_DIR}/boards/36.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/3d-block.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/40.cpp
   	${CMAKE_CURRENT_SOURCE_DIR}/boards/411120-c.cpp

src/boards/451.cpp

@@ -0,0 +1,216 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2024 negativeExponent
+ *
+ * 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 451 is used for the homebrew game Haratyler HP/MP. It is
+ * basically a homebrew TLROM-like circuit board that implements the MMC3
+ * register's in an unusual fashion, and saves the high score to flash ROM */
+
+#include "mapinc.h"
+#include "mmc3.h"
+#include "../ines.h"
+
+const int ROM_CHIP = 0x00;
+const int CFI_CHIP = 0x10;
+const int FLASH_CHIP = 0x11;
+
+const int FLASH_SECTOR_SIZE = 64 * 1024;
+const int magic_addr1 = 0x0555;
+const int magic_addr2 = 0x02AA;
+
+static uint8 flash_state, flash_id_mode;
+static uint8 *flash_data;
+static uint16 flash_buffer_a[10];
+static uint8 flash_buffer_v[10];
+static uint8 flash_id[2];
+
+static DECLFW(M451FlashWrite)
+{
+	if (flash_state < sizeof(flash_buffer_a) / sizeof(flash_buffer_a[0])) {
+		flash_buffer_a[flash_state] = (A & 0xFFF);
+		flash_buffer_v[flash_state] = V;
+		flash_state++;
+
+		// enter flash ID mode
+		if ((flash_state == 2) &&
+			(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
+			(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
+			(flash_buffer_a[1] == magic_addr1) && (flash_buffer_v[1] == 0x90)) {
+			flash_id_mode = 0;
+			flash_state = 0;
+		}
+
+		// erase sector
+		if ((flash_state == 6) &&
+			(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
+			(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
+			(flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0x80) &&
+			(flash_buffer_a[3] == magic_addr1) && (flash_buffer_v[3] == 0xAA) &&
+			(flash_buffer_a[4] == magic_addr2) && (flash_buffer_v[4] == 0x55) &&
+			(flash_buffer_v[5] == 0x30)) {
+			int offset = &Page[A >> 11][A] - flash_data;
+			int sector = offset / FLASH_SECTOR_SIZE;
+			for (int i = sector * FLASH_SECTOR_SIZE; i < (sector + 1) * FLASH_SECTOR_SIZE; i++)
+				flash_data[i % PRGsize[ROM_CHIP]] = 0xFF;
+			FCEU_printf("Flash sector #%d is erased (0x%08x - 0x%08x).\n", sector, offset, offset + FLASH_SECTOR_SIZE);
+		}
+
+		// erase chip
+		if ((flash_state == 6) &&
+			(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
+			(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
+			(flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0x80) &&
+			(flash_buffer_a[3] == magic_addr1) && (flash_buffer_v[3] == 0xAA) &&
+			(flash_buffer_a[4] == magic_addr2) && (flash_buffer_v[4] == 0x55) &&
+			(flash_buffer_a[4] == magic_addr1) && (flash_buffer_v[4] == 0x10)) {
+			memset(flash_data, 0xFF, PRGsize[ROM_CHIP]);
+			FCEU_printf("Flash chip erased.\n");
+			flash_state = 0;
+		}
+
+		// write byte
+		if ((flash_state == 4) &&
+			(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
+			(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
+			(flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0xA0)) {
+			int offset = &Page[A >> 11][A] - flash_data;
+			if (CartBR(A) != 0xFF) {
+				FCEU_PrintError("Error: can't write to 0x%08x, flash sector is not erased.\n", offset);
+			}
+			else {
+				CartBW(A, V);
+			}
+			flash_state = 0;
+		}
+	}
+
+	// not a command
+	if (((A & 0x00FF) != (magic_addr1 & 0x00FF)) && ((A & 0x00FF) != (magic_addr2 & 0x00FF))) {
+		flash_state = 0;
+	}
+
+	// reset
+	if (V == 0xF0) {
+		flash_state = 0;
+		flash_id_mode = 0;
+	}
+
+	FixMMC3PRG(MMC3_cmd);
+}
+
+static void M451FixPRG(uint32 A, uint8 V) {
+	setprg8r(FLASH_CHIP, 0x8000, 0);
+	setprg8r(FLASH_CHIP, 0xA000, 0x10 | ((EXPREGS[0] << 2) & 0x08) | (EXPREGS[0] & 0x01));
+	setprg8r(FLASH_CHIP, 0xC000, 0x20 | ((EXPREGS[0] << 2) & 0x08) | (EXPREGS[0] & 0x01));
+	setprg8r(FLASH_CHIP, 0xE000, 0x30);
+}
+
+static void M451FixCHR(uint32 A, uint8 V) {
+	setchr8(EXPREGS[0] & 0x01);
+}
+
+static DECLFR(M451Read) {
+	if (flash_state == 0x90) {
+		return flash_id[A & 1];
+	}
+	return CartBR(A);
+}
+
+static DECLFW(M451Write) {
+	M451FlashWrite(A, V);
+	switch (A & 0xE000) {
+    case 0xA000:
+        MMC3_CMDWrite(0xA000, A & 0x01);
+        break;
+    case 0xC000:
+        A &= 0xFF;
+	    MMC3_IRQWrite(0xC000, A - 1);
+	    MMC3_IRQWrite(0xC001, 0);
+	    MMC3_IRQWrite(0xE000 + ((A == 0xFF) ? 0x00 : 0x01), 0x00);
+        break;
+    case 0xE000:
+		EXPREGS[0] = A & 0x03;
+		FixMMC3PRG(MMC3_cmd);
+		FixMMC3CHR(MMC3_cmd);
+        break;
+	}
+}
+
+static void M451Power(void) {
+	GenMMC3Power();
+	SetReadHandler(0x8000, 0xFFFF, M451Read);
+	SetWriteHandler(0x8000, 0xFFFF, M451Write);
+}
+
+static void StateRestore(int version) {
+	FixMMC3PRG(MMC3_cmd);
+    FixMMC3CHR(MMC3_cmd);
+}
+
+static void M451Close(void) {
+	if(flash_data)
+		FCEU_gfree(flash_data);
+	flash_data = NULL;
+}
+
+static void M451FlashReset(void)
+{
+	if (flash_data)
+	{
+		size_t flash_size = PRGsize[ROM_CHIP];
+		// Copy ROM to flash data
+		for (size_t i = 0; i < flash_size; i++) {
+			flash_data[i] = PRGptr[ROM_CHIP][i];
+		}
+	}
+}
+
+void Mapper451_Init(CartInfo *info) {
+    GenMMC3_Init(info, 512, 16, 0, 0);
+    pwrap = M451FixPRG;
+    cwrap = M451FixCHR;
+
+	info->Power = M451Power;
+	info->Close = M451Close;
+	GameStateRestore = StateRestore;
+
+	flash_state = 0;
+	flash_id_mode = 0;
+	info->battery = 1;
+
+	// Allocate memory for flash
+	size_t flash_size = PRGsize[ROM_CHIP];
+	flash_data = (uint8*)FCEU_gmalloc(flash_size);
+	// Copy ROM to flash data
+	for (size_t i = 0; i < flash_size; i++) {
+		flash_data[i] = PRGptr[ROM_CHIP][i];
+	}
+	SetupCartPRGMapping(FLASH_CHIP, flash_data, flash_size, 1);
+	info->addSaveGameBuf( flash_data, flash_size, M451FlashReset );
+
+	flash_id[0] = 0x37;
+	flash_id[1] = 0x86;
+	SetupCartPRGMapping(CFI_CHIP, flash_id, sizeof(flash_id), 0);
+
+	AddExState(flash_data, flash_size, 0, "FLSH");
+	AddExState(&flash_state, sizeof(flash_state), 0, "FLST");
+	AddExState(&flash_id_mode, sizeof(flash_id_mode), 0, "FLMD");
+	AddExState(flash_buffer_a, sizeof(flash_buffer_a), 0, "FLBA");
+	AddExState(flash_buffer_v, sizeof(flash_buffer_v), 0, "FLBV");
+}

src/boards/471.cpp

@@ -0,0 +1,65 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2024 negativeExponent
+ *
+ * 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 471 denotes the Impact Soft IM1 circuit board, used for
+ * Haratyler (without HG or MP) and Haraforce. It is basically INES Mapper 201
+ * with the addition of a scanline IRQ.*/
+
+#include "mapinc.h"
+
+static uint32 latch;
+
+static void Sync() {
+	setprg32(0x8000, latch);
+	setchr8(latch);
+}
+
+static DECLFW(Write) {
+	X6502_IRQEnd(FCEU_IQEXT);
+	latch = A;
+	Sync();
+}
+
+static void Reset() {
+	latch = 0;
+	Sync();
+}
+
+static void Power() {
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, Write);
+	Reset();
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+static void HBHook() {
+	X6502_IRQBegin(FCEU_IQEXT);
+}
+
+void Mapper471_Init(CartInfo *info) {
+	info->Power = Power;
+	info->Reset = Reset;
+	GameHBIRQHook = HBHook;
+	GameStateRestore = StateRestore;
+	AddExState(&latch, sizeof(latch), 0, "LATC");
+}

src/ines.cpp

@@ -810,6 +810,8 @@ BMAPPINGLocal bmap[] = {
 	{"Impact Soft MMC3 Flash Board",	406, Mapper406_Init },
 	{"Super Russian Roulette",	413, Mapper413_Init },
 	{"INX_007T_V01",		470, INX_007T_Init },
+	{"Haratyler HP/MP",		451, Mapper451_Init },
+	{"Impact Soft IM1",		471, Mapper471_Init },
 
 	{"KONAMI QTAi Board",	547, QTAi_Init },
 

src/ines.h

@@ -281,6 +281,8 @@ void Mapper255_Init(CartInfo *);
 void Mapper354_Init(CartInfo *);
 void Mapper406_Init(CartInfo *);
 void Mapper413_Init(CartInfo *);
+void Mapper451_Init(CartInfo *);
+void Mapper471_Init(CartInfo *);
 
 void INX_007T_Init(CartInfo* info);
 void GN45_Init(CartInfo *info); /* previously mapper 205 */

vc/vc14_fceux.vcxproj

@@ -438,6 +438,8 @@ xcopy /y /d "$(ProjectDir)\..\src\drivers\win\7z_64.dll" "$(OutDir)"</Command>
     <ClCompile Include="..\src\boards\34.cpp" />
     <ClCompile Include="..\src\boards\354.cpp" />
     <ClCompile Include="..\src\boards\413.cpp" />
+    <ClCompile Include="..\src\boards\471.cpp" />
+    <ClCompile Include="..\src\boards\451.cpp" />
     <ClCompile Include="..\src\boards\36.cpp" />
     <ClCompile Include="..\src\boards\3d-block.cpp" />
     <ClCompile Include="..\src\boards\40.cpp" />

vc/vc14_fceux.vcxproj.filters

@@ -1123,6 +1123,12 @@
     <ClCompile Include="..\src\boards\413.cpp">
       <Filter>boards</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\boards\471.cpp">
+      <Filter>boards</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\boards\451.cpp">
+      <Filter>boards</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\debugsymboltable.cpp" />
   </ItemGroup>
   <ItemGroup>
@@ -1976,4 +1982,4 @@
   <ItemGroup>
     <Image Include="..\src\drivers\win\res\bitmap21.bmp" />
   </ItemGroup>
-</Project>
+</Project>