diff --git a/src/boards/206.c b/src/boards/206_486.c
similarity index 82%
rename from src/boards/206.c
rename to src/boards/206_486.c
index bd88f88..8342d90 100644
--- a/src/boards/206.c
+++ b/src/boards/206_486.c
@@ -76,3 +76,23 @@ void Mapper206_Init(CartInfo *info) {
 	GameStateRestore = StateRestore;
 	AddExState(&StateRegs, ~0, 0, 0);
 }
+
+static DECLFW(M486Write) {
+	DRegs[A &7] =(A &7) <2? (V >>1): V;
+	Sync();
+}
+
+static void M486Power(void) {
+	cmd = 0;
+	DRegs[6] = 0;
+	DRegs[7] = 1;
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0x9FFF, M486Write);
+}
+
+void Mapper486_Init(CartInfo *info) {
+	info->Power = M486Power;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}
diff --git a/src/ines.c b/src/ines.c
index d5894b0..8504a00 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -905,6 +905,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "K-1079",          		482, Mapper482_Init         )
 	INES_BOARD( "ESTIQUE",         		484, Mapper484_Init         )
 	INES_BOARD( "0359",         		485, Mapper485_Init         )
+	INES_BOARD( "KS7009",         		486, Mapper486_Init         )
 	INES_BOARD( "AVE NINA-08",    		487, Mapper487_Init         )
 	INES_BOARD( "Yhc-000",                  500, Mapper500_Init         )
 	INES_BOARD( "Yhc-001",                  501, Mapper501_Init         )
diff --git a/src/ines.h b/src/ines.h
index 81af0c5..9ed5560 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -384,6 +384,7 @@ void Mapper481_Init(CartInfo *);
 void Mapper482_Init(CartInfo *);
 void Mapper484_Init(CartInfo *);
 void Mapper485_Init(CartInfo *);
+void Mapper486_Init(CartInfo *);
 void Mapper487_Init(CartInfo *);
 void Mapper500_Init(CartInfo *);
 void Mapper501_Init(CartInfo *);