From b800c05db5a55a8766eb6c409c93d6b38b90f4e7 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Thu, 10 Apr 2025 01:13:33 +0200
Subject: [PATCH] Add mapper 520.

---
 src/boards/520.c | 32 ++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 34 insertions(+)
 create mode 100644 src/boards/520.c

diff --git a/src/boards/520.c b/src/boards/520.c
new file mode 100644
index 0000000..e87fdd1
--- /dev/null
+++ b/src/boards/520.c
@@ -0,0 +1,32 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2025 NewRisingSun
+ *
+ * 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 "vrc2and4.h"
+
+static void sync () {
+	VRC24_syncPRG(0x1F, VRC24_chr[0] <<2 &0x20);
+	VRC24_syncCHR(0x07, 0x00);
+	VRC24_syncMirror();
+}
+
+void Mapper520_Init (CartInfo *info) {
+	VRC24_init(info, sync, 0x04, 0x08, 1, 1, 0);
+}
diff --git a/src/ines.c b/src/ines.c
index 5e034cb..de8aa66 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -867,6 +867,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Brilliant Com Cocoma Pack", 516, Mapper516_Init        )
 	INES_BOARD( "DANCE2000",                518, UNLD2000_Init          )
 	INES_BOARD( "EH8813A",                  519, UNLEH8813A_Init        )
+	INES_BOARD( "YuYuHakusho+DBZ",          520, Mapper520_Init        )
 	INES_BOARD( "DREAMTECH01",              521, DreamTech01_Init       )
 	INES_BOARD( "LH10",                     522, LH10_Init              )
 	INES_BOARD( "Jncota KT-???",            523, Mapper523_Init         )
diff --git a/src/ines.h b/src/ines.h
index d54c85f..d3706fa 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -375,6 +375,7 @@ void Mapper500_Init(CartInfo *);
 void Mapper501_Init(CartInfo *);
 void Mapper502_Init(CartInfo *);
 void Mapper516_Init(CartInfo *);
+void Mapper520_Init(CartInfo *);
 void Mapper523_Init(CartInfo *);
 void Mapper528_Init(CartInfo *);
 void Mapper533_Init(CartInfo *);