New working software items (a2600.xml)

--------------------------------------
Tarzan (prototype) [Hidden Palace, AJR]

hash/a2600.xml

@@ -17034,6 +17034,18 @@ MOS Atari-made game NTSC ROMs had a CO16xxx number and PAL ROMs had CO17xxx numb
 		</part>
 	</software>
 
+	<software name="tarzan">
+		<description>Tarzan (prototype)</description>
+		<year>1984</year>
+		<publisher>Coleco</publisher>
+		<part name="cart" interface="a2600_cart">
+			<feature name="slot" value="a26_f0" />
+			<dataarea name="rom" size="16384">
+				<rom name="atari_tarzan_42a3.bin" size="16384" crc="15e22f06" sha1="a6d9a3375f9ca62123353760d0c78d05717de7d2"/>
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="taskfrce">
 		<description>Task Force</description>
 		<year>1987</year>

src/devices/bus/vcs/rom.cpp

@@ -41,6 +41,7 @@ DEFINE_DEVICE_TYPE(A26_ROM_4IN1,  a26_rom_4in1_device,  "vcs_4in1",  "Atari VCS
 DEFINE_DEVICE_TYPE(A26_ROM_8IN1,  a26_rom_8in1_device,  "vcs_8in1",  "Atari VCS 2600 ROM Cart 8 in 1")
 DEFINE_DEVICE_TYPE(A26_ROM_32IN1, a26_rom_32in1_device, "vcs_32in1", "Atari VCS 2600 ROM Cart 32 in 1")
 DEFINE_DEVICE_TYPE(A26_ROM_X07,   a26_rom_x07_device,   "vcs_x07",   "Atari VCS 2600 ROM Carts w/X07 bankswitch")
+DEFINE_DEVICE_TYPE(A26_ROM_F0,    a26_rom_f0_device,    "vcs_f0",    "Atari VCS 2600 ROM Carts w/F0 bankswitch")
 
 
 
@@ -883,3 +884,31 @@ void a26_rom_x07_device::change_bank2(offs_t address)
 {
 	m_bank->set_entry((address >> 4) & 0x0f);
 }
+
+
+/*-------------------------------------------------
+ "F0 Bankswitch" Carts:
+ read/write access to 0x1ff0-0x1ff1 & 0x1ff8-0x1ff9
+ determines the 4K ROM bank to be read
+
+ GAMES: Atari Tarzan (prototype)
+
+ -------------------------------------------------*/
+
+a26_rom_f0_device::a26_rom_f0_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+	: a26_rom_f6_device(mconfig, A26_ROM_F0, tag, owner, clock)
+{
+}
+
+void a26_rom_f0_device::install_memory_handlers(address_space *space)
+{
+	m_bank->configure_entries(0, 4, get_rom_base(), 0x1000);
+	space->install_read_bank(0x1000, 0x1fff, m_bank);
+	space->install_write_handler(0x1ff0, 0x1ff1, write8sm_delegate(*this, FUNC(a26_rom_f0_device::switch_bank)));
+	space->install_write_handler(0x1ff8, 0x1ff9, write8sm_delegate(*this, [this] (offs_t offset, u8) { switch_bank(offset + 2, 0); }, "bank"));
+	install_super_chip_handlers(space);
+	space->install_read_tap(0x1ff0, 0x1ff1, "bank",
+			[this] (offs_t address, u8 &, u8) { if (!machine().side_effects_disabled()) switch_bank(address - 0x1ff0, 0); });
+	space->install_read_tap(0x1ff8, 0x1ff9, "bank",
+			[this] (offs_t address, u8 &, u8) { if (!machine().side_effects_disabled()) switch_bank(address - 0x1ff8 + 2, 0); });
+}

src/devices/bus/vcs/rom.h

@@ -360,6 +360,17 @@ private:
 };
 
 
+// ======================> a26_rom_f0_device
+
+class a26_rom_f0_device : public a26_rom_f6_device
+{
+public:
+	a26_rom_f0_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+	virtual void install_memory_handlers(address_space *space) override;
+};
+
+
 
 // device type definition
 DECLARE_DEVICE_TYPE(A26_ROM_2K_4K, a26_rom_2k_4k_device)
@@ -382,6 +393,7 @@ DECLARE_DEVICE_TYPE(A26_ROM_4IN1,  a26_rom_4in1_device)
 DECLARE_DEVICE_TYPE(A26_ROM_8IN1,  a26_rom_8in1_device)
 DECLARE_DEVICE_TYPE(A26_ROM_32IN1, a26_rom_32in1_device)
 DECLARE_DEVICE_TYPE(A26_ROM_X07,   a26_rom_x07_device)
+DECLARE_DEVICE_TYPE(A26_ROM_F0,    a26_rom_f0_device)
 
 
 #endif // MAME_BUS_VCS_ROM_H

src/devices/bus/vcs/vcs_slot.cpp

@@ -50,6 +50,7 @@ enum
 	A26_CM,
 	A26_X07,
 	A26_HARMONY,
+	A26_F0,
 };
 
 //-------------------------------------------------
@@ -175,6 +176,7 @@ static const vcs_slot slot_list[] =
 	{ A26_32IN1, "a26_32in1" },
 	{ A26_X07, "a26_x07" },
 	{ A26_HARMONY, "a26_harmony" },
+	{ A26_F0, "a26_f0" },
 };
 
 static int vcs_get_pcb_id(const char *slot)

src/mame/atari/a2600.cpp

@@ -587,6 +587,7 @@ static void a2600_cart(device_slot_interface &device)
 	device.option_add("a26_32in1", A26_ROM_32IN1);
 	device.option_add("a26_x07",   A26_ROM_X07);
 	device.option_add("a26_harmony",   A26_ROM_HARMONY);
+	device.option_add("a26_f0",    A26_ROM_F0);
 }
 
 void a2600_cons_state::a2600_cartslot(machine_config &config)