From 902b3b01c696b873d3fce24f4eb96e74c4d0dcb3 Mon Sep 17 00:00:00 2001
From: libretroadmin <reallibretroretroarch@gmail.com>
Date: Sat, 25 May 2024 09:23:37 +0200
Subject: [PATCH] Add mapper 500

---
 src/boards/500.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 src/unif.c       |  1 +
 4 files changed, 61 insertions(+)
 create mode 100644 src/boards/500.c

diff --git a/src/boards/500.c b/src/boards/500.c
new file mode 100644
index 0000000..ef3e8d4
--- /dev/null
+++ b/src/boards/500.c
@@ -0,0 +1,58 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2023
+ *
+ * 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 "latch.h"
+
+static uint8 reg[2];
+
+static SFORMAT StateRegs[] = {
+    { reg, 2, "REGS" },
+    { 0 }
+};
+
+static void Sync(void) {
+	setprg4(0x7000, 0);
+	setprg16(0x8000, (reg[0] << 3) | (latch.data & 7));
+	setprg16(0xC000, (reg[0] << 3) | 7);
+	setchr8(0);
+	setmirror(reg[1] & 1);
+}
+
+static DECLFW(M500WriteReg) {
+	if (~reg[1] & 0x80) {
+		reg[A & 1] = V;
+		Sync();
+	}
+}
+
+static void M500Power() {
+    reg[0] = reg[1] = 0;
+	LatchPower();
+	SetReadHandler(0x7000, 0x7FFF, CartBR);
+    SetWriteHandler(0x6000, 0x6FFF, M500WriteReg);
+}
+
+void Mapper500_Init(CartInfo *info) {
+	Latch_Init(info, Sync, NULL, 0, 0);
+	info->Power = M500Power;
+    AddExState(StateRegs, ~0, 0, NULL);
+}
diff --git a/src/ines.c b/src/ines.c
index dd2ea86..484c85f 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -834,6 +834,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Keybyte Computer",        	466, Mapper466_Init         )
 	INES_BOARD( "47-2",                 	467, Mapper467_Init         )
 	INES_BOARD( "BlazePro CPLD",           	468, Mapper468_Init         )
+	INES_BOARD( "Yhc-000",                  500, Mapper500_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 6f61a7d..54a9840 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -343,6 +343,7 @@ void Mapper465_Init(CartInfo *);
 void Mapper466_Init(CartInfo *);
 void Mapper467_Init(CartInfo *);
 void Mapper468_Init(CartInfo *);
+void Mapper500_Init(CartInfo *);
 void Mapper516_Init(CartInfo *);
 void Mapper523_Init(CartInfo *);
 void Mapper533_Init(CartInfo *);
diff --git a/src/unif.c b/src/unif.c
index d566631..d2d964f 100644
--- a/src/unif.c
+++ b/src/unif.c
@@ -624,6 +624,7 @@ static BMAPPING bmap[] = {
 	{ "DS-07",                      439, Mapper439_Init,        0 },
 	{ "K86B",                       439, Mapper439_Init,        0 },
 	{ "COOLGIRL",                   342, COOLGIRL_Init,         BMCFLAG_256KCHRR },
+	{ "S-2009",                     434, Mapper434_Init,        0 },
 
 	{ NULL, NO_INES, NULL, 0 }
 };