diff --git a/hash/visicom.xml b/hash/visicom.xml
index c97328d3b82..47b794d2c6a 100644
--- a/hash/visicom.xml
+++ b/hash/visicom.xml
@@ -15,7 +15,7 @@ CAS-190 Inspiration (Bagua and Biorhythm)               no       霊感
 -->
 <softwarelist name="visicom" description="Toshiba Visicom cartridges">
 
-	<software name="aridrill" supported="no">
+	<software name="aridrill">
 		<description>Arithmetic Drill</description><!-- Dumper called it Maths Drill -->
 		<year>1978</year>
 		<publisher>Toshiba</publisher>
@@ -27,7 +27,7 @@ CAS-190 Inspiration (Bagua and Biorhythm)               no       霊感
 			</dataarea>
 		</part>
 	</software>
-	<software name="sportfan" supported="no">
+	<software name="sportfan">
 		<description>Sports Fan</description>
 		<year>1978</year>
 		<publisher>Toshiba</publisher>
@@ -39,7 +39,7 @@ CAS-190 Inspiration (Bagua and Biorhythm)               no       霊感
 			</dataarea>
 		</part>
 	</software>
-	<software name="gambler1" supported="no">
+	<software name="gambler1">
 		<description>Gambler I</description>
 		<year>1978</year>
 		<publisher>Toshiba</publisher>
@@ -51,7 +51,7 @@ CAS-190 Inspiration (Bagua and Biorhythm)               no       霊感
 			</dataarea>
 		</part>
 	</software>
-	<software name="gambler2" supported="no">
+	<software name="gambler2">
 		<description>Gambler II</description>
 		<year>1978</year>
 		<publisher>Toshiba</publisher>
@@ -63,7 +63,7 @@ CAS-190 Inspiration (Bagua and Biorhythm)               no       霊感
 			</dataarea>
 		</part>
 	</software>
-	<software name="spacecom" supported="no">
+	<software name="spacecom">
 		<description>Space Command</description>
 		<year>1978</year>
 		<publisher>Toshiba</publisher>
diff --git a/src/mame/drivers/studio2.cpp b/src/mame/drivers/studio2.cpp
index 32513c4caba..5ccfa1113eb 100644
--- a/src/mame/drivers/studio2.cpp
+++ b/src/mame/drivers/studio2.cpp
@@ -185,7 +185,9 @@ Notes:
     Usage
     - All variants: Boot up, then press F3, then press a letter (Q,W,E,A) to choose an inbuilt game.
     - If using a cart, boot up, press F3, then follow the instructions that came with the cart (usually press Q).
-    - Currently, Visicom cannot run any carts, and has no support for st2 files.
+    - Visicom has no support for st2 files.
+    - Visicom always reserves buttons 1,2,3,4,7(Q,W,E,A,Z) for the internal games, which are always available.
+      The cartridges use 5(S) to start, except gambler1 which uses 9(C).
 
 */
 
@@ -269,9 +271,9 @@ class visicom_state : public studio2_state
 {
 public:
 	visicom_state(const machine_config &mconfig, device_type type, const char *tag)
-		: studio2_state(mconfig, type, tag),
-			m_color0_ram(*this, "color0_ram"),
-			m_color1_ram(*this, "color1_ram")
+		: studio2_state(mconfig, type, tag)
+		, m_color0_ram(*this, "color0_ram")
+		, m_color1_ram(*this, "color1_ram")
 	{ }
 
 	void visicom(machine_config &config);
@@ -282,6 +284,8 @@ private:
 	required_shared_ptr<uint8_t> m_color0_ram;
 	required_shared_ptr<uint8_t> m_color1_ram;
 
+	virtual void machine_start() override;
+
 	DECLARE_WRITE8_MEMBER( dma_w );
 	void visicom_io_map(address_map &map);
 	void visicom_map(address_map &map);
@@ -291,9 +295,9 @@ class mpt02_state : public studio2_state
 {
 public:
 	mpt02_state(const machine_config &mconfig, device_type type, const char *tag)
-		: studio2_state(mconfig, type, tag),
-			m_cti(*this, CDP1864_TAG),
-			m_color_ram(*this, "color_ram")
+		: studio2_state(mconfig, type, tag)
+		, m_cti(*this, CDP1864_TAG)
+		, m_color_ram(*this, "color_ram")
 	{ }
 
 	void mpt02(machine_config &config);
@@ -527,6 +531,12 @@ READ8_MEMBER( studio2_state::cart_c00 ) { return m_cart->read_rom(offset + 0x800
 READ8_MEMBER( studio2_state::cart_e00 ) { return m_cart->read_rom(offset + 0xa00); }
 READ8_MEMBER( mpt02_state::cart_c00 ) { return m_cart->read_rom(offset + 0x800); }
 
+void visicom_state::machine_start()
+{
+	// register for state saving
+	save_item(NAME(m_keylatch));
+}
+
 void studio2_state::machine_start()
 {
 	if (m_cart->exists())