From cfbe777f6183759d7a6ce4e83c9319826d9a8b5d Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Sat, 2 Apr 2022 22:03:41 +0200
Subject: [PATCH] Added mapper 467

---
 src/boards/467.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 76 insertions(+)
 create mode 100644 src/boards/467.c

diff --git a/src/boards/467.c b/src/boards/467.c
new file mode 100644
index 0000000..3ec24d5
--- /dev/null
+++ b/src/boards/467.c
@@ -0,0 +1,74 @@
+/* FCEUmm - 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"
+#include "mmc3.h"
+
+static void Mapper467_PRGWrap(uint32 A, uint8 V) {
+	if (EXPREGS[0] &0x20) {
+		int prgAND =EXPREGS[0] &0x40? 0x0F: 0x03;
+		int prgOR  =EXPREGS[0] <<1 &0x3C | 0x40;
+		setprg8(A, V &prgAND | prgOR &~prgAND);
+	} else
+	if (~A &0x2000)
+		setprg16(A, EXPREGS[0] &0x1F);
+}
+
+static void Mapper467_CHRWrap(uint32 A, uint8 V) {
+	if (~A &0x0800) {
+		A =A &~0x400 | A <<1 &0x800;
+		if (EXPREGS[0] &0x40)
+			setchr2(A, V |0x100);
+		else
+			setchr2(A, V &~3 | A >>11 &3);
+	}
+}
+
+static DECLFW(Mapper467_WriteExtra) {
+	EXPREGS[0] =V;
+	FixMMC3PRG(MMC3_cmd &0x3F);
+	FixMMC3CHR(MMC3_cmd &0x3F);
+	setmirror(EXPREGS[0] &0x80? MI_H: MI_V);
+}
+
+static DECLFW(Mapper467_WriteMMC3) {
+	if (~A &1) V &=0x3F;
+	MMC3_CMDWrite(A, V);
+}
+
+static void Mapper467_Reset(void) {
+	EXPREGS[0] =0;
+	MMC3RegReset();
+}
+
+static void Mapper467_Power(void) {
+	EXPREGS[0] =0;
+	GenMMC3Power();
+	SetWriteHandler(0x8000, 0x8FFF, Mapper467_WriteMMC3);
+	SetWriteHandler(0x9000, 0x9FFF, Mapper467_WriteExtra);
+}
+
+void Mapper467_Init(CartInfo *info) {
+	GenMMC3_Init(info, 256, 256, 0, 0);
+	cwrap = Mapper467_CHRWrap;
+	pwrap = Mapper467_PRGWrap;
+	info->Power = Mapper467_Power;
+	info->Reset = Mapper467_Reset;
+	AddExState(EXPREGS, 1, 0, "EXPR");
+}
diff --git a/src/ines.c b/src/ines.c
index 9ddcef0..a025647 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -817,6 +817,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "NC-7000M/NC-8000M",        444, Mapper444_Init         )
 	INES_BOARD( "DS-9-27",                  452, Mapper452_Init         )
 	INES_BOARD( "K6C3001A",                 456, Mapper456_Init         )
+	INES_BOARD( "47-2",                 	467, Mapper467_Init         )
 	INES_BOARD( "SA-9602B",                 513, SA9602B_Init           )
 	INES_BOARD( "Brilliant Com Cocoma Pack", 516, Mapper516_Init        )
 	INES_BOARD( "DANCE2000",                518, UNLD2000_Init          )
diff --git a/src/ines.h b/src/ines.h
index aefc891..92ad140 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -327,6 +327,7 @@ void Mapper443_Init(CartInfo *);
 void Mapper444_Init(CartInfo *);
 void Mapper452_Init(CartInfo *);
 void Mapper456_Init(CartInfo *);
+void Mapper467_Init(CartInfo *);
 void Mapper516_Init(CartInfo *);
 void Mapper523_Init(CartInfo *);
 void Mapper533_Init(CartInfo *);