diff --git a/src/boards/569.c b/src/boards/569.c
new file mode 100644
index 0000000..6d21d4e
--- /dev/null
+++ b/src/boards/569.c
@@ -0,0 +1,70 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2020
+ *
+ * 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_mmc3.h"
+
+static uint8 reg;
+
+static void sync() {
+	int chrAND = reg &0x04? 0x1FF: reg &0x02? 0xFF: 0x7F;
+	int chrOR = reg <<7;
+	MMC3_syncPRG(0x0F, reg <<4 &~0x0F);
+	MMC3_syncCHR(chrAND, chrOR &~chrAND);
+	MMC3_syncMirror();
+}
+
+static int getPRGBank(uint8 bank) {
+	if (reg &0x08) {
+		return MMC3_getPRGBank(0) &~3 | bank &3;
+	} else
+		return MMC3_getPRGBank(bank);
+}
+
+static int getCHRBank(uint8 bank) {
+	if (reg &0x04)
+		return MMC3_getCHRBank(bank &6 | bank >>1 &1) <<1 | bank &1;
+	else
+		return MMC3_getCHRBank(bank);
+}
+
+static DECLFW(writeReg) {
+	reg = A &0xFF;
+	sync();
+}
+
+static void reset() {
+	reg = 0;
+	MMC3_clear();
+}
+
+static void power() {
+	reg = 0;
+	MMC3_power();
+}
+
+void Mapper569_Init(CartInfo *info) {
+	MMC3_init(info, sync, MMC3_TYPE_SHARP, getPRGBank, getCHRBank, NULL, writeReg);
+	info->Power = power;
+	info->Reset = reset;
+	AddExState(&reg, 1, 0, "EXPR");
+}
diff --git a/src/boards/asic_mmc3.c b/src/boards/asic_mmc3.c
index 3786dba..d7267ce 100644
--- a/src/boards/asic_mmc3.c
+++ b/src/boards/asic_mmc3.c
@@ -115,7 +115,7 @@ DECLFW(MMC3_writeReg) {
 	if (A <0xC000) MMC3_cbSync();
 }
 
-static void MMC3_clear () {
+void MMC3_clear () {
 	MMC3_reg[0] = 0; MMC3_reg[1] = 2; MMC3_reg[2] = 4; MMC3_reg[3] = 5; MMC3_reg[4] = 6; MMC3_reg[5] = 7; MMC3_reg[6] = 0; MMC3_reg[7] = 1;
 	MMC3_index = MMC3_mirroring = MMC3_wramControl = MMC3_reloadValue = MMC3_reloadRequest = MMC3_irqEnable = MMC3_counter = 0;
 	MMC3_cbSync();
diff --git a/src/boards/asic_mmc3.h b/src/boards/asic_mmc3.h
index 210940d..3e4527b 100644
--- a/src/boards/asic_mmc3.h
+++ b/src/boards/asic_mmc3.h
@@ -36,6 +36,7 @@ void MMC3_syncCHR (int, int);
 void MMC3_syncMirror ();
 void MMC3_clockCounter ();
 DECLFW (MMC3_writeReg);
+void MMC3_clear ();
 void MMC3_activate (uint8, void (*)(), uint8, int (*)(uint8), int (*)(uint8), DECLFR((*)), DECLFW((*)));
 void MMC3_addExState();
 void MMC3_restore (int);
diff --git a/src/ines.c b/src/ines.c
index 75ec390..7bf3342 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -952,6 +952,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Venus Turbo Game Doctor",  562, Mapper561_562_Init     )
 	INES_BOARD( "J-2020",                   563, Mapper563_Init         )
 	INES_BOARD( "Top Ten Variety (SF III)", 567, Mapper567_Init         )
+	INES_BOARD( "820315-C",                 569, Mapper569_Init         )
 	INES_BOARD( "9052",                     570, Mapper570_Init         )
 	INES_BOARD( "JC-011",                   571, Mapper571_Init         )
 	INES_BOARD( "F-648",                    572, Mapper572_Init         )
diff --git a/src/ines.h b/src/ines.h
index 172ae2b..5f52377 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -418,6 +418,7 @@ void Mapper559_Init(CartInfo *);
 void Mapper561_562_Init(CartInfo *);
 void Mapper563_Init(CartInfo *);
 void Mapper567_Init(CartInfo *);
+void Mapper569_Init(CartInfo *);
 void Mapper570_Init(CartInfo *);
 void Mapper571_Init(CartInfo *);
 void Mapper572_Init(CartInfo *);