From 12157b4f8251d9a588f7f1499e5ca6e2b9852b4d Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Sat, 2 Apr 2022 20:25:09 +0200
Subject: [PATCH] Add mapper 294

---
 src/boards/294.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  2 +-
 src/ines.h       |  1 +
 3 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 src/boards/294.c

diff --git a/src/boards/294.c b/src/boards/294.c
new file mode 100644
index 0000000..db4956c
--- /dev/null
+++ b/src/boards/294.c
@@ -0,0 +1,61 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2022 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"
+
+static uint8 latch;
+
+static void Mapper294_sync (void) {
+	setprg16(0x8000, latch);
+	setprg16(0xC000, latch |7);
+	setchr8(0);
+	setmirror(latch &0x80? MI_H: MI_V);
+}
+
+static DECLFW(Mapper294_writeInnerBank) {
+	latch =latch &~7 | V&7;
+	Mapper294_sync();
+}
+
+static DECLFW(Mapper294_writeOuterBank) {
+	if (A &0x100) {
+		latch =latch &7 | V <<3;
+		Mapper294_sync();
+	}
+}
+
+static void Mapper294_reset(void) {
+	latch =0;
+	Mapper294_sync();
+}
+
+static void Mapper294_power(void) {
+	Mapper294_reset();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, Mapper294_writeInnerBank);
+	SetWriteHandler(0x4020, 0x7FFF, Mapper294_writeOuterBank);
+}
+
+void Mapper294_Init(CartInfo *info) {
+	info->Power = Mapper294_power;
+	info->Reset = Mapper294_reset;
+	AddExState(&latch, 1, 0, "LATC");
+}
diff --git a/src/ines.c b/src/ines.c
index c288b86..9ddcef0 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -706,7 +706,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Kasheng 2-in-1 ",          291, Mapper291_Init         )
 	INES_BOARD( "DRAGONFIGHTER",            292, UNLBMW8544_Init        )
 	INES_BOARD( "NewStar 12-in-1/7-in-1",   293, Mapper293_Init         )
-	INES_BOARD( "MMC3 BMC PIRATE",          294, Mapper134_Init         ) /* nesdev redirects this as mapper 134 */
+	INES_BOARD( "63-1601 ",                 294, Mapper294_Init         )
 	INES_BOARD( "YY860216C",                295, Mapper295_Init         )
 	INES_BOARD( "TXC 01-22110-000",         297, Mapper297_Init         )
 	INES_BOARD( "TF1201",                   298, UNLTF1201_Init         )
diff --git a/src/ines.h b/src/ines.h
index ef30b65..aefc891 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -262,6 +262,7 @@ void Mapper269_Init(CartInfo *);
 void Mapper271_Init(CartInfo *);
 void Mapper288_Init(CartInfo *);
 void Mapper293_Init(CartInfo *);
+void Mapper294_Init(CartInfo *);
 void Mapper297_Init(CartInfo *);
 void Mapper310_Init(CartInfo *);
 void Mapper319_Init(CartInfo *);