diff options
Diffstat (limited to 'src/mame/drivers/novag_const.cpp')
-rw-r--r-- | src/mame/drivers/novag_const.cpp | 76 |
1 files changed, 57 insertions, 19 deletions
diff --git a/src/mame/drivers/novag_const.cpp b/src/mame/drivers/novag_const.cpp index 7aa93651d62..59262a1f56e 100644 --- a/src/mame/drivers/novag_const.cpp +++ b/src/mame/drivers/novag_const.cpp @@ -5,22 +5,25 @@ Novag Constellation (model 831) -Hardware notes: +Hardware notes (1st version): - MOS MPS6502A @ 2MHz -- 2KB RAM (daughterboard with 4*2114) battery-backed, 2*8KB ROM +- 2KB RAM (daughterboard with 4*2114), 2*8KB ROM - TTL, buzzer, 24 LEDs, 8*8 chessboard buttons +3.6MHz version: +- G65SC02P-3 @ 3.6MHz (7.2MHz XTAL) +- 2KB RAM (TC5516AP), 16KB ROM (custom label, assumed TMM23128) +- PCB supports "Memory Save", but components aren't installed + TODO: -- add 3.6MHz version: 7.2MHz XTAL, 65SC02 CPU, 1 maskrom(NOVAG-831A 6133-8316) 16KB? - 1 RAM chip(TC5516AP) instead of silly daughterboard - add Quattro version, another small update, this time 4MHz ******************************************************************************/ #include "emu.h" #include "cpu/m6502/m6502.h" +#include "cpu/m6502/m65sc02.h" #include "machine/sensorboard.h" -#include "machine/nvram.h" #include "machine/timer.h" #include "sound/beep.h" #include "video/pwm.h" @@ -46,7 +49,8 @@ public: { } // machine drivers - void constellation(machine_config &config); + void nconst(machine_config &config); + void nconst36(machine_config &config); protected: virtual void machine_start() override; @@ -61,7 +65,8 @@ private: required_ioport_array<8> m_inputs; // address maps - void main_map(address_map &map); + void const_map(address_map &map); + void const36_map(address_map &map); // periodic interrupts template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_on) { m_maincpu->set_input_line(Line, ASSERT_LINE); } @@ -87,6 +92,10 @@ void const_state::machine_start() // register for savestates save_item(NAME(m_inp_mux)); save_item(NAME(m_led_select)); + + // game relies on RAM filled with FF at power-on + for (int i = 0; i < 0x800; i++) + m_maincpu->space(AS_PROGRAM).write_byte(i, 0xff); } @@ -151,15 +160,21 @@ READ8_MEMBER(const_state::input2_r) Address Maps ******************************************************************************/ -void const_state::main_map(address_map &map) +void const_state::const36_map(address_map &map) { map.unmap_value_high(); - map(0x0000, 0x07ff).ram().share("nvram"); + map(0x0000, 0x07ff).ram(); map(0x6000, 0x6000).rw(FUNC(const_state::input2_r), FUNC(const_state::mux_w)); map(0x8000, 0x8000).rw(FUNC(const_state::input1_r), FUNC(const_state::control_w)); + map(0xc000, 0xffff).rom(); +} + +void const_state::const_map(address_map &map) +{ + const36_map(map); + map(0xa000, 0xbfff).rom(); - map(0xc000, 0xdfff).unmapr(); // checks for bookrom but doesn't have any - map(0xe000, 0xffff).rom(); + map(0xc000, 0xdfff).unmapr(); // checks for bookrom? but doesn't have any } @@ -168,7 +183,7 @@ void const_state::main_map(address_map &map) Input Ports ******************************************************************************/ -static INPUT_PORTS_START( constellation ) +static INPUT_PORTS_START( nconst ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("New Game") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_NAME("Multi Move / Player/Player / King") @@ -208,19 +223,17 @@ INPUT_PORTS_END Machine Drivers ******************************************************************************/ -void const_state::constellation(machine_config &config) +void const_state::nconst(machine_config &config) { /* basic machine hardware */ M6502(config, m_maincpu, 2_MHz_XTAL); - m_maincpu->set_addrmap(AS_PROGRAM, &const_state::main_map); + m_maincpu->set_addrmap(AS_PROGRAM, &const_state::const_map); const attotime irq_period = attotime::from_hz(2_MHz_XTAL / 0x2000); // through 4020 IC, ~244Hz TIMER(config, m_irq_on).configure_periodic(FUNC(const_state::irq_on<M6502_IRQ_LINE>), irq_period); - m_irq_on->set_start_delay(irq_period - attotime::from_nsec(1020)); // active for ?us (assume same as supercon) + m_irq_on->set_start_delay(irq_period - attotime::from_nsec(17100)); // assume same as const36 TIMER(config, "irq_off").configure_periodic(FUNC(const_state::irq_off<M6502_IRQ_LINE>), irq_period); - NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_1); - SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS); m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess)); m_board->set_delay(attotime::from_msec(250)); @@ -235,6 +248,25 @@ void const_state::constellation(machine_config &config) m_beeper->add_route(ALL_OUTPUTS, "mono", 0.25); } +void const_state::nconst36(machine_config &config) +{ + nconst(config); + + /* basic machine hardware */ + M65SC02(config.replace(), m_maincpu, 7.2_MHz_XTAL/2); + m_maincpu->set_addrmap(AS_PROGRAM, &const_state::const36_map); + + const attotime irq_period = attotime::from_hz(7.2_MHz_XTAL/2 / 0x2000); // through 4020 IC, ~439Hz + TIMER(config.replace(), m_irq_on).configure_periodic(FUNC(const_state::irq_on<M6502_IRQ_LINE>), irq_period); + m_irq_on->set_start_delay(irq_period - attotime::from_nsec(17100)); // active for ~17.1us + TIMER(config.replace(), "irq_off").configure_periodic(FUNC(const_state::irq_off<M6502_IRQ_LINE>), irq_period); + + m_board->set_delay(attotime::from_msec(200)); + + BEEP(config.replace(), m_beeper, 7.2_MHz_XTAL/2 / 0x800); // ~1758Hz + m_beeper->add_route(ALL_OUTPUTS, "mono", 0.25); +} + /****************************************************************************** @@ -247,6 +279,11 @@ ROM_START( const ) ROM_LOAD("8314_orange", 0xe000, 0x2000, CRC(89395a86) SHA1(4807f196fec70abdaabff5bfc479a64d5cf2b0ad) ) // " ROM_END +ROM_START( const36 ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD("novag-831a_6133-8316.u2", 0xc000, 0x4000, CRC(7da760f3) SHA1(6172e0fa03377e911141a86747849bf25f20613f) ) +ROM_END + } // anonymous namespace @@ -255,5 +292,6 @@ ROM_END Drivers ******************************************************************************/ -// YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS -CONS( 1983, const, 0, 0, constellation, constellation, const_state, empty_init, "Novag", "Constellation", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) +// YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS +CONS( 1983, const, 0, 0, nconst, nconst, const_state, empty_init, "Novag", "Constellation", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) +CONS( 1984, const36, const, 0, nconst36, nconst, const_state, empty_init, "Novag", "Constellation 3.6MHz", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) |