New working machines

--------------------
Mini Sensory Chess Challenger (1982 version) [hap, Berger, Achim]

src/mame/drivers/fidel_sc6.cpp

@@ -1,23 +1,48 @@
 // license:BSD-3-Clause
 // copyright-holders:hap
-// thanks-to:yoyo_chessboard
+// thanks-to:yoyo_chessboard, Berger
 /******************************************************************************
 
 Fidelity Sensory Chess Challenger 6 (model SC6)
+Fidelity Mini Sensory Chess Challenger (model MSC, 1982 version)
 
-Hardware notes:
+SC6 Hardware notes:
 - PCB label 510-1045B01
 - INS8040N-11 MCU, 11MHz XTAL
 - external 4KB ROM 2332 101-1035A01, in module slot
 - buzzer, 2 7seg LEDs, 8*8 chessboard buttons
 
-released modules, * denotes not dumped yet:
+SC6 released modules, * denotes not dumped yet:
 - *BO6: Book Openings I
 - *CG6: Greatest Chess Games 1
 - SC6: pack-in, original program
 
 SC6 program is contained in BO6 and CG6.
 
+-------------------------------------------------------------------------------
+
+MSC hardware notes:
+- PCB label 510-1044B01
+- P8049H MCU, 11MHz XTAL
+- 2KB internal ROM, module slot
+- buzzer, 18 leds, 8*8 chessboard buttons
+
+I/O is identical to SC6.
+
+MSC released modules, * denotes not dumped yet:
+- CAC: Challenger Advanced Chess
+- *CBO: Challenger Book Openings
+- *CGG: Challenger Greatest Games
+
+The modules take over the internal ROM, by asserting the EA pin.
+
+2 MSC versions exist, they can be distinguished from the button panel design.
+The 2nd version has rectangular buttons. The one in MAME came from the 2nd one.
+
+TODO:
+- MSC MCU is currently emulated as I8039, due to missing EA pin emulation
+- msc internal artwork (game works fine, but not really playable at the moment)
+
 ******************************************************************************/
 
 #include "emu.h"
@@ -44,13 +69,16 @@ public:
 	sc6_state(const machine_config &mconfig, device_type type, const char *tag) :
 		driver_device(mconfig, type, tag),
 		m_maincpu(*this, "maincpu"),
+		m_rom(*this, "maincpu"),
 		m_board(*this, "board"),
 		m_display(*this, "display"),
 		m_dac(*this, "dac"),
+		m_cart(*this, "cartslot"),
 		m_inputs(*this, "IN.0")
 	{ }
 
 	// machine configs
+	void msc(machine_config &config);
 	void sc6(machine_config &config);
 
 protected:
@@ -59,34 +87,34 @@ protected:
 private:
 	// devices/pointers
 	required_device<mcs48_cpu_device> m_maincpu;
+	required_region_ptr<u8> m_rom;
 	required_device<sensorboard_device> m_board;
 	required_device<pwm_display_device> m_display;
 	required_device<dac_bit_interface> m_dac;
+	required_device<generic_slot_device> m_cart;
 	required_ioport m_inputs;
 
 	// address maps
-	void main_map(address_map &map);
+	void msc_map(address_map &map);
+	void sc6_map(address_map &map);
 
 	// I/O handlers
 	void update_display();
 	void mux_w(u8 data);
 	void select_w(u8 data);
+	u8 rom_r(offs_t offset);
 
 	u8 read_inputs();
 	u8 input_r();
 	DECLARE_READ_LINE_MEMBER(input6_r);
 	DECLARE_READ_LINE_MEMBER(input7_r);
 
-	u8 m_led_select;
+	u8 m_led_select = 0;
-	u8 m_inp_mux;
+	u8 m_inp_mux = 0;
 };
 
 void sc6_state::machine_start()
 {
-	// zerofill
-	m_led_select = 0;
-	m_inp_mux = 0;
-
 	// register for savestates
 	save_item(NAME(m_led_select));
 	save_item(NAME(m_inp_mux));
@@ -108,8 +136,8 @@ void sc6_state::update_display()
 
 void sc6_state::mux_w(u8 data)
 {
-	// P24-P27: 7442 A-D
+	// P24-P27: 7442 A-D (or 74145)
-	// 7442 0-8: input mux, 7seg data
+	// 7442 0-8: input mux, led data
 	m_inp_mux = data >> 4 & 0xf;
 	update_display();
 
@@ -119,11 +147,17 @@ void sc6_state::mux_w(u8 data)
 
 void sc6_state::select_w(u8 data)
 {
-	// P16,P17: digit select
+	// P16,P17: led select
 	m_led_select = ~data >> 6 & 3;
 	update_display();
 }
 
+u8 sc6_state::rom_r(offs_t offset)
+{
+	// MSC reads from cartridge if it's inserted(A12 high), otherwise from internal ROM
+	return m_cart->exists() ? m_cart->read_rom(offset | 0x1000) : m_rom[offset & 0x7ff];
+}
+
 u8 sc6_state::read_inputs()
 {
 	u8 data = 0;
@@ -163,7 +197,12 @@ READ_LINE_MEMBER(sc6_state::input7_r)
     Address Maps
 ******************************************************************************/
 
-void sc6_state::main_map(address_map &map)
+void sc6_state::msc_map(address_map &map)
+{
+	map(0x0000, 0x0fff).r(FUNC(sc6_state::rom_r));
+}
+
+void sc6_state::sc6_map(address_map &map)
 {
 	map(0x0000, 0x0fff).r("cartslot", FUNC(generic_slot_device::read_rom));
 }
@@ -182,21 +221,28 @@ static INPUT_PORTS_START( sc6 )
 	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("LV / Rook")
 	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen")
 	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / King")
-	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL")
+	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE) PORT_NAME("CL")
 	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("RE")
 INPUT_PORTS_END
 
+static INPUT_PORTS_START( msc )
+	PORT_INCLUDE( sc6 )
+
+	PORT_MODIFY("IN.0")
+	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("Speaker / Bishop")
+INPUT_PORTS_END
+
 
 
 /******************************************************************************
     Machine Configs
 ******************************************************************************/
 
-void sc6_state::sc6(machine_config &config)
+void sc6_state::msc(machine_config &config)
 {
 	/* basic machine hardware */
-	I8040(config, m_maincpu, 11_MHz_XTAL);
+	I8039(config, m_maincpu, 11_MHz_XTAL); // actually I8049
-	m_maincpu->set_addrmap(AS_PROGRAM, &sc6_state::main_map);
+	m_maincpu->set_addrmap(AS_PROGRAM, &sc6_state::msc_map);
 	m_maincpu->p2_out_cb().set(FUNC(sc6_state::mux_w));
 	m_maincpu->p1_in_cb().set(FUNC(sc6_state::input_r));
 	m_maincpu->p1_out_cb().set(FUNC(sc6_state::select_w));
@@ -208,8 +254,8 @@ void sc6_state::sc6(machine_config &config)
 	m_board->set_delay(attotime::from_msec(150));
 
 	/* video hardware */
-	PWM_DISPLAY(config, m_display).set_size(2, 7);
+	PWM_DISPLAY(config, m_display).set_size(2, 9);
-	m_display->set_segmask(0x3, 0x7f);
+	m_display->set_segmask(0x3, 0xff);
 	config.set_default_layout(layout_fidel_sc6);
 
 	/* sound hardware */
@@ -218,8 +264,31 @@ void sc6_state::sc6(machine_config &config)
 	VOLTAGE_REGULATOR(config, "vref").add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
 
 	/* cartridge */
-	GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "fidel_sc6").set_must_be_loaded(true);
+	GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "fidel_msc");
-	SOFTWARE_LIST(config, "cart_list").set_original("fidel_sc6");
+	SOFTWARE_LIST(config, "cart_list").set_original("fidel_msc");
+}
+
+void sc6_state::sc6(machine_config &config)
+{
+	msc(config);
+
+	/* basic machine hardware */
+	I8040(config.replace(), m_maincpu, 11_MHz_XTAL);
+	m_maincpu->set_addrmap(AS_PROGRAM, &sc6_state::sc6_map);
+	m_maincpu->p2_out_cb().set(FUNC(sc6_state::mux_w));
+	m_maincpu->p1_in_cb().set(FUNC(sc6_state::input_r));
+	m_maincpu->p1_out_cb().set(FUNC(sc6_state::select_w));
+	m_maincpu->t0_in_cb().set(FUNC(sc6_state::input6_r));
+	m_maincpu->t1_in_cb().set(FUNC(sc6_state::input7_r));
+
+	/* video hardware */
+	m_display->set_size(2, 7);
+	m_display->set_segmask(0x3, 0x7f);
+	config.set_default_layout(layout_fidel_sc6);
+
+	/* cartridge */
+	GENERIC_CARTSLOT(config.replace(), "cartslot", generic_plain_slot, "fidel_sc6").set_must_be_loaded(true);
+	SOFTWARE_LIST(config.replace(), "cart_list").set_original("fidel_sc6");
 }
 
 
@@ -233,6 +302,11 @@ ROM_START( fscc6 )
 	// none here, it's in the module slot
 ROM_END
 
+ROM_START( miniscc )
+	ROM_REGION( 0x0800, "maincpu", 0 )
+	ROM_LOAD("100-1012b01", 0x0000, 0x0800, CRC(ea3261f7) SHA1(1601358fdf0eee0b973c0f4c78bf679b8dada72a) ) // internal ROM
+ROM_END
+
 } // anonymous namespace
 
 
@@ -241,5 +315,6 @@ ROM_END
     Drivers
 ******************************************************************************/
 
-//    YEAR  NAME   PARENT  CMP MACHINE  INPUT  CLASS      INIT        COMPANY                 FULLNAME                      FLAGS
+//    YEAR  NAME     PARENT  CMP MACHINE  INPUT  CLASS      INIT        COMPANY, FULLNAME, FLAGS
-CONS( 1982, fscc6, 0,       0, sc6,     sc6,   sc6_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger \"6\"", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
+CONS( 1982, fscc6,   0,       0, sc6,     sc6,   sc6_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger \"6\"", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
+CONS( 1982, miniscc, 0,       0, msc,     msc,   sc6_state, empty_init, "Fidelity Electronics", "Mini Sensory Chess Challenger (1982 version)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )

src/mame/mame.lst

@@ -13542,6 +13542,7 @@ fscc12b                         //
 
 @source:fidel_sc6.cpp
 fscc6                           //
+miniscc
 
 @source:fidel_sc8.cpp
 fscc8                           //