From a6e5ee7c498572130dee541ab33a4db6fab25cbe Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Tue, 9 Sep 2025 22:53:52 +0200
Subject: [PATCH] Add mapper 493.

---
 src/boards/493.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 54 insertions(+)
 create mode 100644 src/boards/493.c

diff --git a/src/boards/493.c b/src/boards/493.c
new file mode 100644
index 0000000..bef0875
--- /dev/null
+++ b/src/boards/493.c
@@ -0,0 +1,52 @@
+/* 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"
+
+static uint8 reg[2];
+
+static void sync () {
+	setprg32(0x8000, reg[0] <<1 | reg[1] &0x01);
+	setchr8(reg[0] <<3 | reg[1] >>4 &0x07);
+}
+
+static DECLFW (writeReg) {
+	reg[A >>15 &1] = V;
+	sync();
+}
+
+static void power () {
+	SetReadHandler(0x6000, 0xFFFF, CartBR);
+	SetWriteHandler(0x6000, 0xFFFF, writeReg);
+	reg[0] = reg[1] = 0;
+	RAM[0x07] =0;
+	sync();
+}
+
+static void stateRestore (int version) {
+	sync();
+}
+
+void Mapper493_Init (CartInfo *info) {
+	info->Reset = power;
+	info->Power = power;
+	GameStateRestore = stateRestore;
+	AddExState(reg, 2, 0, "REGS");
+}
diff --git a/src/ines.c b/src/ines.c
index 593ac88..5f62b5a 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -909,6 +909,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "KS7009",         		486, Mapper486_Init         )
 	INES_BOARD( "AVE NINA-08",    		487, Mapper487_Init         )
 	INES_BOARD( "HC001",    		488, Mapper488_Init         )
+	INES_BOARD( "AVE-NTDEC 30-in-1",        493, Mapper493_Init         )
 	INES_BOARD( "CH512K/OK-103",            494, Mapper494_Init         )
 	INES_BOARD( "K-3011",                   498, Mapper498_Init         )
 	INES_BOARD( "FC-41",                    499, Mapper499_Init         )
diff --git a/src/ines.h b/src/ines.h
index 2683ea9..cde2181 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -389,6 +389,7 @@ void Mapper485_Init(CartInfo *);
 void Mapper486_Init(CartInfo *);
 void Mapper487_Init(CartInfo *);
 void Mapper488_Init(CartInfo *);
+void Mapper493_Init(CartInfo *);
 void Mapper494_Init(CartInfo *);
 void Mapper498_Init(CartInfo *);
 void Mapper499_Init(CartInfo *);