// license:BSD-3-Clause // copyright-holders: /******************************************************************************* Skeleton driver for Merit Scorpion darts machines. The same PCB is used also on other Merit darts machines, like Regent Darts and Pub Time Darts II. Hardware overview: Main CPU: Dallas DS80C3202-UM or compatible (80C31 on older models) Sound: DAC? NVRAM: Dallas DS1220Y-120 or compatible Other: Dallas DS1232 MicroMonitor Dallas DS1204U-3 Electronic Key (not populated) OSCs: 12.000 MHz, 3.2768 MHz Dips: 2 x 8 dips banks *******************************************************************************/ #include "emu.h" #include "cpu/mcs51/mcs51.h" #include "machine/nvram.h" #include "sound/dac.h" #include "speaker.h" namespace { class merits_state : public driver_device { public: merits_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } void scrpiond(machine_config &config); void scrpiondold(machine_config &config); private: void mem_map(address_map &map); void io_map(address_map &map); required_device m_maincpu; }; void merits_state::mem_map(address_map &map) { map(0x0000, 0xffff).rom().region("maincpu", 0); } void merits_state::io_map(address_map &map) { map(0x8000, 0x87ff).ram().share("nvram"); //map(0x9000, 0x9000).r(); //map(0xa000, 0xa000).r(); //map(0xc000, 0xc000).w(); //map(0xd000, 0xd000).w(); //map(0xe000, 0xe000).w(); //map(0xf000, 0xf000).w(); //map(0xf800, 0xf800).w(); } static INPUT_PORTS_START(scrpiond) PORT_START("DSW1") PORT_DIPUNKNOWN_DIPLOC(0x01, 0x01, "SW1:1") PORT_DIPUNKNOWN_DIPLOC(0x02, 0x02, "SW1:2") PORT_DIPUNKNOWN_DIPLOC(0x04, 0x04, "SW1:3") PORT_DIPUNKNOWN_DIPLOC(0x08, 0x08, "SW1:4") PORT_DIPUNKNOWN_DIPLOC(0x10, 0x10, "SW1:5") PORT_DIPUNKNOWN_DIPLOC(0x20, 0x20, "SW1:6") PORT_DIPUNKNOWN_DIPLOC(0x40, 0x40, "SW1:7") PORT_DIPUNKNOWN_DIPLOC(0x80, 0x80, "SW1:8") PORT_START("DSW2") PORT_DIPUNKNOWN_DIPLOC(0x01, 0x01, "SW1:1") PORT_DIPUNKNOWN_DIPLOC(0x02, 0x02, "SW1:2") PORT_DIPUNKNOWN_DIPLOC(0x04, 0x04, "SW1:3") PORT_DIPUNKNOWN_DIPLOC(0x08, 0x08, "SW1:4") PORT_DIPUNKNOWN_DIPLOC(0x10, 0x10, "SW1:5") PORT_DIPUNKNOWN_DIPLOC(0x20, 0x20, "SW1:6") PORT_DIPUNKNOWN_DIPLOC(0x40, 0x40, "SW1:7") PORT_DIPUNKNOWN_DIPLOC(0x80, 0x80, "SW1:8") INPUT_PORTS_END void merits_state::scrpiond(machine_config &config) { DS80C320(config, m_maincpu, 12_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &merits_state::mem_map); m_maincpu->set_addrmap(AS_IO, &merits_state::io_map); NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // DS1220Y } void merits_state::scrpiondold(machine_config &config) { I80C31(config, m_maincpu, 12_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &merits_state::mem_map); m_maincpu->set_addrmap(AS_IO, &merits_state::io_map); NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // DS1220Y } ROM_START(scrpiond) ROM_REGION(0x10000, "maincpu", 0) ROM_LOAD( "27c512.u7", 0x00000, 0x10000, CRC(06cdf965) SHA1(4cdac131063fc0dd954eaaee2ae40d5731f83469) ) ROM_END ROM_START(scrpionda) ROM_REGION(0x10000, "maincpu", 0) ROM_LOAD( "4978-22_u7-r5_c1997_mii.u7", 0x00000, 0x10000, CRC(e647a17e) SHA1(4a7b9e2af3656a1b6f4ffd8c17b68eec5c534776) ) ROM_END // Old PCB model, i80C31 instead of 80C32. The DS1204U-3 socket is still unpopulated. Other PCB components stays the same. ROM_START(scrpiondb) ROM_REGION(0x10000, "maincpu", 0) ROM_LOAD( "4778-02_u7-r02_c1994_mii.u7", 0x00000, 0x10000, CRC(57a5083d) SHA1(edb94dbb9e040e960c45406b082ede133574351a) ) ROM_END /* Older PCB (silkcreened "© 1989 Merit Industries"), i80C31 instead of 80C32 and without socket for DS1204U-3. The "Solo Challenger" was an upgrade kit, including a replacement EEPROM, a new button, some new art, and a complete manual with schematics. The standard "Pub Time Darts II Plus 2" machine had a separate PCB for cheat detection with ultrasounds (named MIC/ULTRA BOARD): ____________________________________________ | : RCA CONNECTORS -> (o) (o) (o) (o) (o) | | : <- CONN J2 | | _________ | | |_MPQ2484| | | _________ CONN J9 | | 4116R-001 ··· | | _________ _________ _________ | | |_TPQ2807| T74LS02B1 |_LM324N_| | | _________ _________ | | CD74HC4060E |_LM324N_| | | _________ _________ _________ | | |_DM74123N| SN74LS08N SN74LS221N| | CONN J10 -> ···· | | :::::::::::::::::::::::::::::::::::::::::: | |___________________CONN J1__________________| */ ROM_START(pubtimed2ch) ROM_REGION(0x10000, "maincpu", 0) ROM_LOAD( "challenger_r4b.u7", 0x00000, 0x08000, CRC(6d5c0634) SHA1(45f4ed2e984f2525a1ed680bbc2a11eab93b0bca) ) // 27256 ROM_END } // Anonymous namespace // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS GAME(1999, scrpiond, 0, scrpiond, scrpiond, merits_state, empty_init, ROT0, "Merit", "Scorpion (Jun 15, 1999)", MACHINE_IS_SKELETON_MECHANICAL) GAME(1997, scrpionda, scrpiond, scrpiond, scrpiond, merits_state, empty_init, ROT0, "Merit", "Scorpion (Oct 01, 1997)", MACHINE_IS_SKELETON_MECHANICAL) GAME(1993, scrpiondb, scrpiond, scrpiondold, scrpiond, merits_state, empty_init, ROT0, "Merit", "Scorpion (Dec 24, 1993)", MACHINE_IS_SKELETON_MECHANICAL) GAME(1992, pubtimed2ch, 0, scrpiondold, scrpiond, merits_state, empty_init, ROT0, "Merit", "Pub Time Darts II Plus 2 with Solo Challenger (Mar 24, 1992)", MACHINE_IS_SKELETON_MECHANICAL)