diff --git a/src/boards/506.c b/src/boards/506.c
new file mode 100644
index 0000000..69d049e
--- /dev/null
+++ b/src/boards/506.c
@@ -0,0 +1,58 @@
+/* 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 prgAND =~reg &3? 0x0F: 0x1F;
+	int chrAND = reg &3? 0x7F: 0xFF;
+	int prgOR  = reg <<5 &0x20  | reg <<3 &0x10;
+	int chrOR  = reg <<7 &0x100 |~reg <<7 &0x80;
+	MMC3_syncPRG(prgAND, prgOR &~prgAND);
+	MMC3_syncCHR(chrAND, chrOR &~chrAND);
+	MMC3_syncMirror();
+}
+
+static DECLFW(writeReg) {
+	reg = A &0xFF;
+	sync();
+}
+
+static void reset() {
+	reg = 0;
+	sync();
+}
+
+static void power() {
+	reg = 0;
+	MMC3_power();
+}
+
+void Mapper506_Init(CartInfo *info) {
+	MMC3_init(info, sync, MMC3_TYPE_AX5202P, NULL, NULL, NULL, writeReg);
+	info->Power = power;
+	info->Reset = reset;
+	AddExState(&reg, 1, 0, "EXPR");
+}
diff --git a/src/boards/572.c b/src/boards/572.c
new file mode 100644
index 0000000..ce59940
--- /dev/null
+++ b/src/boards/572.c
@@ -0,0 +1,60 @@
+/* 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 prgAND = 0x1F;
+	int chrAND = 0x7F;
+	int prgOR  = reg <<5;
+	int chrOR  = reg <<7;
+	MMC3_syncPRG(prgAND, prgOR &~prgAND);
+	MMC3_syncCHR(chrAND, chrOR &~chrAND);
+	MMC3_syncMirror();
+}
+
+static DECLFW(writeReg) {
+	if (~reg &0x08) {
+		reg = A &0xFF;
+		sync();
+	}
+}
+
+static void reset() {
+	reg = 0;
+	sync();
+}
+
+static void power() {
+	reg = 0;
+	MMC3_power();
+}
+
+void Mapper572_Init(CartInfo *info) {
+	MMC3_init(info, sync, MMC3_TYPE_AX5202P, NULL, NULL, NULL, writeReg);
+	info->Power = power;
+	info->Reset = reset;
+	AddExState(&reg, 1, 0, "EXPR");
+}
diff --git a/src/ines.c b/src/ines.c
index 28121de..22d0d6c 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -914,6 +914,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Yhc-002",                  502, Mapper502_Init         )
 	INES_BOARD( "ET-170",                   503, Mapper503_Init         )
 	INES_BOARD( "K-3054",                   504, Mapper504_Init         )
+	INES_BOARD( "GA-009",                   506, Mapper506_Init         )
 	INES_BOARD( "SA-9602B",                 513, SA9602B_Init           )
 	INES_BOARD( "Brilliant Com Cocoma Pack",516, Mapper516_Init        )
 	INES_BOARD( "DANCE2000",                518, UNLD2000_Init          )
@@ -951,6 +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( "F-648",                    572, Mapper572_Init         )
 	INES_BOARD( "5068",                     573, Mapper573_Init         )
 	INES_BOARD( "910610",                   578, Mapper578_Init         )
 	INES_BOARD( "T-215",                    579, Mapper579_Init         )
diff --git a/src/ines.h b/src/ines.h
index e0fa2c1..b3b0f22 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -393,6 +393,7 @@ void Mapper501_Init(CartInfo *);
 void Mapper502_Init(CartInfo *);
 void Mapper503_Init(CartInfo *);
 void Mapper504_Init(CartInfo *);
+void Mapper506_Init(CartInfo *);
 void Mapper516_Init(CartInfo *);
 void Mapper520_Init(CartInfo *);
 void Mapper523_Init(CartInfo *);
@@ -416,6 +417,7 @@ void Mapper559_Init(CartInfo *);
 void Mapper561_562_Init(CartInfo *);
 void Mapper563_Init(CartInfo *);
 void Mapper567_Init(CartInfo *);
+void Mapper572_Init(CartInfo *);
 void Mapper573_Init(CartInfo *);
 void Mapper578_Init(CartInfo *);
 void Mapper579_Init(CartInfo *);