diff --git a/src/boards/571.c b/src/boards/571.c
new file mode 100644
index 0000000..c759426
--- /dev/null
+++ b/src/boards/571.c
@@ -0,0 +1,72 @@
+/* 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_vrc2and4.h"
+
+static uint8 reg;
+
+static void sync () {
+	int prgAND = reg &0x10? 0x1F: 0x0F;
+	int chrAND = reg &0x10? 0xFF: 0x7F;
+	int prgOR = reg <<1;
+	int chrOR = reg <<4;
+	if (reg &0x20)
+		VRC24_syncPRG(prgAND, prgOR &~prgAND);
+	else
+	if (reg &0x6)
+		setprg32(0x8000, reg >>1);
+	else {
+		setprg16(0x8000, reg);
+		setprg16(0xC000, reg);
+	}
+	VRC24_syncCHR(chrAND, chrOR &~chrAND);
+	VRC24_syncMirror();
+	if (reg &0x10)
+		VRC24_reconfigure(8, 4);
+	else
+		VRC24_reconfigure(4, 8);
+}
+
+static DECLFW (writeReg) {
+	if (~reg &0x01) {
+		reg = A &0xFF;
+		sync();
+	}
+}
+
+static void reset () {
+	reg = 0;
+	sync();
+}
+
+static void power () {
+	reg = 0;
+	VRC24_power();
+}
+
+void Mapper571_Init (CartInfo *info) {
+	VRC4_init(info, sync, 4, 8, 1, NULL, NULL, NULL, writeReg, NULL);
+	info->Power = power;
+	info->Reset = reset;
+	AddExState(&reg, 1, 0, "EXPR");
+}
diff --git a/src/boards/asic_vrc2and4.c b/src/boards/asic_vrc2and4.c
index 16166bf..6dfe81d 100644
--- a/src/boards/asic_vrc2and4.c
+++ b/src/boards/asic_vrc2and4.c
@@ -239,6 +239,11 @@ static void VRC4_configure (void (*sync)(), int A0, int A1, uint8 useRepeatBit,
 	VRC24_cbExternalSelect = externalSelect;
 }
 
+void VRC24_reconfigure(int A0, int A1) {
+	VRC24_A0 = A0;
+	VRC24_A1 = A1;
+}
+
 void VRC2_activate (uint8 clear, void (*sync)(), int A0, int A1, int (*prg)(uint8), int (*chr)(uint8), DECLFR((*read)), DECLFW((*write))) {
 	VRC2_configure(sync, A0, A1, prg, chr, read, write);
 	VRC24_setHandlers();
diff --git a/src/boards/asic_vrc2and4.h b/src/boards/asic_vrc2and4.h
index c5ae48c..ed82969 100644
--- a/src/boards/asic_vrc2and4.h
+++ b/src/boards/asic_vrc2and4.h
@@ -37,6 +37,7 @@ void VRC24_syncMirror ();
 DECLFW(VRC24_writeReg);
 
 void FP_FASTAPASS(1) VRC4_cpuCycle(int);
+void VRC24_reconfigure (int, int);
 void VRC2_activate (uint8, void (*)(), int, int, int (*)(uint8), int (*)(uint8), DECLFR((*)), DECLFW((*)));
 void VRC4_activate (uint8, void (*)(), int, int, uint8, int (*)(uint8), int (*)(uint8), DECLFR((*)), DECLFW((*)), DECLFW((*)));
 void VRC2_addExState ();
diff --git a/src/ines.c b/src/ines.c
index 04431f2..75ec390 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -953,6 +953,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "J-2020",                   563, Mapper563_Init         )
 	INES_BOARD( "Top Ten Variety (SF III)", 567, Mapper567_Init         )
 	INES_BOARD( "9052",                     570, Mapper570_Init         )
+	INES_BOARD( "JC-011",                   571, Mapper571_Init         )
 	INES_BOARD( "F-648",                    572, Mapper572_Init         )
 	INES_BOARD( "5068",                     573, Mapper573_Init         )
 	INES_BOARD( "FC-40",                    574, Mapper574_Init         )
diff --git a/src/ines.h b/src/ines.h
index 30c073c..172ae2b 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -419,6 +419,7 @@ void Mapper561_562_Init(CartInfo *);
 void Mapper563_Init(CartInfo *);
 void Mapper567_Init(CartInfo *);
 void Mapper570_Init(CartInfo *);
+void Mapper571_Init(CartInfo *);
 void Mapper572_Init(CartInfo *);
 void Mapper573_Init(CartInfo *);
 void Mapper574_Init(CartInfo *);