From d99e6e563cfe0570a0980a06ba6395e3bcca5c53 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Fri, 22 Oct 2021 22:29:26 +0200
Subject: [PATCH] Add support for mapper 376

---
 src/boards/376.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 67 insertions(+)
 create mode 100644 src/boards/376.c

diff --git a/src/boards/376.c b/src/boards/376.c
new file mode 100644
index 0000000..b9a1171
--- /dev/null
+++ b/src/boards/376.c
@@ -0,0 +1,65 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2019 Libretro Team
+ *
+ * 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
+ */
+
+#include "mapinc.h"
+#include "mmc3.h"
+
+static void Mapper376CW(uint32 A, uint8 V) {
+	uint32 base = (EXPREGS[0] &0x40? 0x080: 0x000) | (EXPREGS[1] &0x01? 0x100: 0x000);
+	setchr1(A, base | (V & 0x7F));
+}
+
+static void Mapper376PW(uint32 A, uint8 V) {
+	uint32 base = (EXPREGS[0] &0x07) | (EXPREGS[0] &0x40? 0x08: 0x00) | (EXPREGS[1] &0x01? 0x10: 0x00);
+	if (EXPREGS[0] & 0x80) {
+		if (EXPREGS[0] &0x20) {
+			if (A ==0x8000) setprg32(A, base >>1);
+		} else {
+			if (A ==0x8000 || A ==0xC000) setprg16(A, base);
+		}
+	} else
+		setprg8(A, (base << 1) | (V & 0x0F));
+}
+
+static DECLFW(Mapper376Write) {
+	EXPREGS[A & 1] = V;
+	FixMMC3PRG(MMC3_cmd);
+	FixMMC3CHR(MMC3_cmd);
+}
+
+static void Mapper376Reset(void) {
+	EXPREGS[0] = 0;
+	EXPREGS[1] = 0;
+	MMC3RegReset();
+}
+
+static void Mapper376Power(void) {
+	GenMMC3Power();
+	SetWriteHandler(0x6000, 0x7FFF, Mapper376Write);
+}
+
+void Mapper376_Init(CartInfo *info) {
+	GenMMC3_Init(info, 128, 256, 1, 0);
+	pwrap = Mapper376PW;
+	cwrap = Mapper376CW;
+	info->Power = Mapper376Power;
+	info->Reset = Mapper376Reset;
+	AddExState(EXPREGS, 2, 0, "EXPR");
+}
diff --git a/src/ines.c b/src/ines.c
index 1e7f7f0..f99aea1 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -695,6 +695,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Golden Mario Party II - Around the World 6-in-1",       370, Mapper370_Init         )
 	INES_BOARD( "MMC3 PIRATE SFC-12",       372, Mapper372_Init         )
 	INES_BOARD( "95/96 Super HiK 4-in-1",   374, Mapper374_Init         )
+	INES_BOARD( "YY841155C",                376, Mapper376_Init         )
 	INES_BOARD( "42 to 80,000 (970630C)",   380, Mapper380_Init         )
 	INES_BOARD( "KN-42",                    381, Mapper381_Init         )
 	INES_BOARD( "830928C",                  382, Mapper382_Init         )
diff --git a/src/ines.h b/src/ines.h
index acdd82a..3cf415f 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -270,6 +270,7 @@ void Mapper369_Init(CartInfo *);
 void Mapper370_Init(CartInfo *);
 void Mapper372_Init(CartInfo *);
 void Mapper374_Init(CartInfo *);
+void Mapper376_Init(CartInfo *);
 void Mapper380_Init(CartInfo *);
 void Mapper381_Init(CartInfo *);
 void Mapper382_Init(CartInfo *);