From 7a06acbacb8040a110692f302b677bfb39ed6426 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Thu, 11 Sep 2025 23:21:34 +0200
Subject: [PATCH] Add mapper 418.

---
 src/boards/418.c | 34 ++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 36 insertions(+)
 create mode 100644 src/boards/418.c

diff --git a/src/boards/418.c b/src/boards/418.c
new file mode 100644
index 0000000..26a5996
--- /dev/null
+++ b/src/boards/418.c
@@ -0,0 +1,34 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2020
+ *
+ * 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 "asic_n118.h"
+
+static void sync () {
+	N118_syncPRG(0x0F, 0x00);
+	setchr8(0);
+	setmirror(N118_getCHRBank(7) &0x01? MI_H: MI_V);
+}
+
+void Mapper418_Init (CartInfo *info) {
+	N118_init(info, sync, NULL, NULL);
+}
diff --git a/src/ines.c b/src/ines.c
index 2a02322..5f86258 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -857,6 +857,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "0353",                     415, Mapper415_Init         )
 	INES_BOARD( "4-in-1/N-32",              416, Mapper416_Init         )
 	INES_BOARD( "",                         417, Mapper417_Init         )
+	INES_BOARD( "820106-C/821007C",         418, Mapper418_Init         )
 	INES_BOARD( "A971210",                  420, Mapper420_Init         )
 	INES_BOARD( "SC871115C",                421, Mapper421_Init         )
 	INES_BOARD( "BS-400R/BS-4040",          422, Mapper422_Init         )
diff --git a/src/ines.h b/src/ines.h
index be3e826..36f1d25 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -338,6 +338,7 @@ void Mapper414_Init(CartInfo *);
 void Mapper415_Init(CartInfo *);
 void Mapper416_Init(CartInfo *);
 void Mapper417_Init(CartInfo *);
+void Mapper418_Init(CartInfo *);
 void Mapper420_Init(CartInfo *);
 void Mapper421_Init(CartInfo *);
 void Mapper422_Init(CartInfo *);