From 726d7157f859c118ecd8d08b0b387d955225d999 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Tue, 10 Mar 2026 17:46:33 +0100
Subject: [PATCH] Add mapper 613.

---
 src/boards/613.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/ines.c       |  1 +
 src/ines.h       |  1 +
 3 files changed, 72 insertions(+)
 create mode 100644 src/boards/613.c

diff --git a/src/boards/613.c b/src/boards/613.c
new file mode 100644
index 0000000..c501647
--- /dev/null
+++ b/src/boards/613.c
@@ -0,0 +1,70 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2026 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 "asic_mmc1.h"
+#include "asic_mmc3.h"
+
+static uint8 reg;
+
+static void sync (void) {
+	if (reg &0x01) {
+		MMC3_syncPRG(0x0F, reg <<4);
+		MMC3_syncCHR(0x7F, reg <<7);
+		MMC3_syncMirror();
+	} else {
+		MMC1_syncPRG(0x07, reg <<3);
+		MMC1_syncCHR(0x1F, reg <<5);
+		MMC1_syncMirror();
+	}
+}
+
+static void applyMode (uint8 clear) {
+	PPU_hook = NULL;
+	MapIRQHook = NULL;
+	GameHBIRQHook = NULL;
+	if (reg &0x01)
+		MMC3_activate(clear, sync, MMC3_TYPE_AX5202P, NULL, NULL, NULL, NULL);
+	else
+		MMC1_activate(clear, sync, MMC1_TYPE_MMC1B, NULL, NULL, NULL, NULL);
+}
+
+static void reset (void) {
+	reg++;
+	applyMode(1);
+}
+
+static void power (void) {
+	reg = 0;
+	applyMode(1);
+}
+
+static void restore (int version) {
+	applyMode(0);
+}
+
+void Mapper613_Init (CartInfo *info) {
+	MMC1_addExState();
+	MMC3_addExState();
+	info->Reset = reset;
+	info->Power = power;
+	GameStateRestore = restore;
+	AddExState(&reg, 1, 0, "EXPR");
+}
diff --git a/src/ines.c b/src/ines.c
index 596c200..8fe523c 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -1029,6 +1029,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "63-100",                   609, Mapper609_Init         )
 	INES_BOARD( "J-2042",                   610, Mapper610_Init         )
 	INES_BOARD( "T-124/43-117/831049",      611, Mapper611_Init         )
+	INES_BOARD( "S5668 3366",               613, Mapper613_Init         )
 	INES_BOARD( "K-3044",                   616, Mapper616_Init         )
 INES_BOARD_END()
 
diff --git a/src/ines.h b/src/ines.h
index 1e0570d..e22a48f 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -498,6 +498,7 @@ void Mapper608_Init(CartInfo *);
 void Mapper609_Init(CartInfo *);
 void Mapper610_Init(CartInfo *);
 void Mapper611_Init(CartInfo *);
+void Mapper613_Init(CartInfo *);
 void Mapper616_Init(CartInfo *);
 void FFE_Init(CartInfo *);