/**************************************************************** Meyco 8088 based hardware i8088 CPU @ 5MHz (15MHz XTAL + i8284A clock generator), 3 x 8KB EPROM (max 4), 3 x 8KB RAM (max 4), 2KB battery RAM, 2 x i8155, optional i8251A + RS232 for factory debug driver by MAME team also thanks to Darrell Hal Smith, Kevin Mullins To initialize battery RAM, go into Meter Read mode (F1 -> 9), and then press the Meter Read + Reset buttons (9 + 0). If a game is not turned off properly, eg. exiting MAME in mid-game, it may run faulty on the next boot. Enable the Night Switch to prevent this. TODO: - coincounters/hopper ****************************************************************/ #include "emu.h" #include "cpu/i86/i86.h" #include "machine/i8155.h" #include "machine/nvram.h" #include "sound/dac.h" #include "video/resnet.h" #include "gldarrow.lh" class meyc8088_state : public driver_device { public: meyc8088_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this,"maincpu"), m_vram(*this, "vram"), m_heartbeat(*this, "heartbeat") { } required_device m_maincpu; required_shared_ptr m_vram; required_device m_heartbeat; UINT8 m_status; UINT8 m_common; DECLARE_WRITE8_MEMBER(drive_w); DECLARE_WRITE8_MEMBER(video5_flip_w); DECLARE_READ8_MEMBER(video5_flip_r); DECLARE_WRITE8_MEMBER(screen_flip_w); DECLARE_READ8_MEMBER(screen_flip_r); DECLARE_READ8_MEMBER(meyc8088_input_r); DECLARE_READ8_MEMBER(meyc8088_status_r); DECLARE_WRITE8_MEMBER(meyc8088_lights1_w); DECLARE_WRITE8_MEMBER(meyc8088_lights2_w); DECLARE_WRITE8_MEMBER(meyc8088_common_w); DECLARE_WRITE_LINE_MEMBER(meyc8088_sound_out); virtual void palette_init(); UINT32 screen_update_meyc8088(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void screen_eof_meyc8088(screen_device &screen, bool state); TIMER_DEVICE_CALLBACK_MEMBER(heartbeat_callback); }; /*************************************************************************** Video ***************************************************************************/ /*************************************************************************** Convert the color PROMs into a more useable format. The palette PROM is connected to the RGB output this way: (even and uneven pins were switched around in the schematics) bit 7 -- N/C -- 820 ohm resistor -- GREEN -- -- GREEN -- 820 ohm resistor -- BLUE -- -- BLUE -- 820 ohm resistor -- RED -- -- RED bit 0 -- N/C plus 330 ohm pullup resistors on all lines ***************************************************************************/ static const res_net_decode_info meyc8088_decode_info = { 1, // there may be two proms needed to construct color 0, 31, // start/end // R, G, B, { 0, 0, 0, }, // offsets { 1, 5, 3, }, // shifts {0x03,0x03,0x03, } // masks }; static const res_net_info meyc8088_net_info = { RES_NET_VCC_5V | RES_NET_VBIAS_5V | RES_NET_VIN_OPEN_COL, { { RES_NET_AMP_NONE, 330, 0, 2, { 1, 820 } }, { RES_NET_AMP_NONE, 330, 0, 2, { 1, 820 } }, { RES_NET_AMP_NONE, 330, 0, 2, { 1, 820 } } } }; void meyc8088_state::palette_init() { const UINT8 *color_prom = machine().root_device().memregion("proms")->base(); rgb_t *rgb; rgb = compute_res_net_all(machine(), color_prom, &meyc8088_decode_info, &meyc8088_net_info); palette_set_colors(machine(), 0, rgb, 32); auto_free(machine(), rgb); } UINT32 meyc8088_state::screen_update_meyc8088(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { UINT8 v[5]; v[4] = m_status << 2 & 0x10; // video5: color prom d4 if (~m_status & 2) { // screen off bitmap.fill(v[4]); return 0; } for (offs_t offs = 0x800; offs < 0x4000; offs+=2) { UINT8 y = (offs-0x800) >> 6; UINT8 x = (offs-0x800) << 2; v[0] = m_vram[offs|0x0000]; // video1: color prom d0 v[1] = m_vram[offs|0x0001]; // video2: color prom d1 v[2] = m_vram[offs|0x4000]; // video3: color prom d2 v[3] = m_vram[offs|0x4001]; // video4: color prom d3 for (int i = 0; i < 8; i++) bitmap.pix16(y, x | i) = ((v[0] << i) >> 7 & 1) | ((v[1] << i) >> 6 & 2) | ((v[2] << i) >> 5 & 4) | ((v[3] << i) >> 4 & 8) | v[4]; } return 0; } void meyc8088_state::screen_eof_meyc8088(screen_device &screen, bool state) { // INTR on LC255 (pulses at start and end of vblank), INTA hardwired to $20 generic_pulse_irq_line_and_vector(m_maincpu, 0, 0x20, 1); } /*************************************************************************** I/O ***************************************************************************/ TIMER_DEVICE_CALLBACK_MEMBER(meyc8088_state::heartbeat_callback) { m_status |= 0x20; } WRITE8_MEMBER(meyc8088_state::drive_w) { // drivers go into high-impedance state ~100ms after write (LS374 /OC) m_status &= ~0x20; m_heartbeat->adjust(attotime::from_msec(100)); // d0-d3: DC counter drivers // d4-d7: AC motor drivers } // switch screen on/off on $b4000 access READ8_MEMBER(meyc8088_state::screen_flip_r) { m_status ^= 2; return 0; } WRITE8_MEMBER(meyc8088_state::screen_flip_w) { m_status ^= 2; } // switch video5 (color prom d4) on/off on $b5000 access READ8_MEMBER(meyc8088_state::video5_flip_r) { m_status ^= 4; return 0; } WRITE8_MEMBER(meyc8088_state::video5_flip_w) { m_status ^= 4; } static ADDRESS_MAP_START( meyc8088_map, AS_PROGRAM, 8, meyc8088_state ) AM_RANGE(0x00000, 0x007ff) AM_RAM AM_SHARE("nvram") AM_RANGE(0x70000, 0x77fff) AM_RAM AM_SHARE("vram") AM_RANGE(0xb0000, 0xb00ff) AM_DEVREADWRITE("i8155_2", i8155_device, memory_r, memory_w) AM_RANGE(0xb0800, 0xb0807) AM_DEVREADWRITE("i8155_2", i8155_device, io_r, io_w) AM_RANGE(0xb1000, 0xb10ff) AM_DEVREADWRITE("i8155_1", i8155_device, memory_r, memory_w) AM_RANGE(0xb1800, 0xb1807) AM_DEVREADWRITE("i8155_1", i8155_device, io_r, io_w) AM_RANGE(0xb2000, 0xb2000) AM_WRITE(drive_w) AM_RANGE(0xb3000, 0xb3000) AM_NOP // i8251A data (debug related, unpopulated on sold boards) AM_RANGE(0xb3800, 0xb3800) AM_NOP // " AM_RANGE(0xb4000, 0xb4000) AM_READWRITE(screen_flip_r, screen_flip_w) AM_RANGE(0xb5000, 0xb5000) AM_READWRITE(video5_flip_r, video5_flip_w) AM_RANGE(0xf8000, 0xfffff) AM_ROM ADDRESS_MAP_END READ8_MEMBER(meyc8088_state::meyc8088_input_r) { UINT8 ret = 0xff; // multiplexed switch inputs if (~m_common & 1) ret &= ioport("C0")->read_safe(0); // bit switches if (~m_common & 2) ret &= ioport("C1")->read_safe(0); // control switches if (~m_common & 4) ret &= ioport("C2")->read_safe(0); // light switches if (~m_common & 8) ret &= ioport("C3")->read_safe(0); // light switches return ret; } READ8_MEMBER(meyc8088_state::meyc8088_status_r) { // d0: /CR2 // d1: screen on // d2: video5 // d3: N/C // d4: battery ok // d5: /drive on return (m_status & 0x27) | 0x18; } WRITE8_MEMBER(meyc8088_state::meyc8088_lights1_w) { // lite 1-8 for (int i = 0; i < 8; i++) output_set_lamp_value(i, ~data >> i & 1); } WRITE8_MEMBER(meyc8088_state::meyc8088_lights2_w) { // lite 9-16 for (int i = 0; i < 8; i++) output_set_lamp_value(i + 8, ~data >> i & 1); } WRITE8_MEMBER(meyc8088_state::meyc8088_common_w) { // d0: /CR2 m_status = (m_status & ~1) | (data & 1); // d1: battery on m_status = (m_status & ~0x10) | (data << 3 & 0x10); // d2-d5: /common m_common = data >> 2 & 0xf; } WRITE_LINE_MEMBER(meyc8088_state::meyc8088_sound_out) { machine().device("dac")->write_signed8(state ? 0x7f : 0); } static const i8155_interface i8155_intf[2] = { { // all ports set to input DEVCB_DRIVER_MEMBER(meyc8088_state,meyc8088_input_r), DEVCB_NULL, DEVCB_INPUT_PORT("SW"), // filtered switch inputs DEVCB_NULL, DEVCB_DRIVER_MEMBER(meyc8088_state,meyc8088_status_r), DEVCB_NULL, DEVCB_NULL // i8251A trigger txc/rxc (debug related, unpopulated on sold boards) }, { // all ports set to output DEVCB_NULL, DEVCB_DRIVER_MEMBER(meyc8088_state,meyc8088_lights2_w), DEVCB_NULL, DEVCB_DRIVER_MEMBER(meyc8088_state,meyc8088_lights1_w), DEVCB_NULL, DEVCB_DRIVER_MEMBER(meyc8088_state,meyc8088_common_w), DEVCB_DRIVER_LINE_MEMBER(meyc8088_state,meyc8088_sound_out) } }; /*************************************************************************** Inputs ***************************************************************************/ static INPUT_PORTS_START( gldarrow ) PORT_START("SW") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen") PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(1) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_IMPULSE(1) // coin4 PORT_BIT( 0x78, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) // hopper coin switch? PORT_START("C0") PORT_DIPNAME( 0x03, 0x00, "Payout Percentage" ) PORT_DIPLOCATION("BSW:1,2") PORT_DIPSETTING( 0x03, "85%") PORT_DIPSETTING( 0x02, "88%") PORT_DIPSETTING( 0x01, "90%") PORT_DIPSETTING( 0x00, "93%") PORT_DIPNAME( 0x04, 0x00, "Bit Switch 3" ) PORT_DIPLOCATION("BSW:3") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x04, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x00, "Bonus Award" ) PORT_DIPLOCATION("BSW:4") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x08, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x00, DEF_STR( Coinage ) ) PORT_DIPLOCATION("BSW:5") PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x10, DEF_STR( 1C_5C ) ) PORT_DIPNAME( 0x20, 0x00, "Bit Switch 6" ) PORT_DIPLOCATION("BSW:6") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x20, DEF_STR( On ) ) PORT_DIPNAME( 0x40, 0x00, "Bit Switch 7" ) PORT_DIPLOCATION("BSW:7") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x40, DEF_STR( On ) ) PORT_SERVICE_DIPLOC( 0x80, IP_ACTIVE_HIGH, "BSW:8" ) PORT_START("C1") PORT_BIT( 0x1f, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE2 ) PORT_NAME("Meter Reset") PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_NAME("Meter Read") PORT_DIPNAME( 0x80, 0x80, "Night Switch" ) PORT_CODE(KEYCODE_F1) PORT_TOGGLE PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("C2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_GAMBLE_BET ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SLOT_STOP3 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SLOT_STOP2 ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SLOT_STOP1 ) PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("C3") PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END /*************************************************************************** Machine Config ***************************************************************************/ static MACHINE_CONFIG_START( meyc8088, meyc8088_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", I8088, (XTAL_15MHz / 3) * 0.95) // NOTE: underclocked to prevent errors on diagnostics, MAME i8088 cycle timing is probably inaccurate MCFG_CPU_PROGRAM_MAP(meyc8088_map) MCFG_I8155_ADD("i8155_1", XTAL_15MHz / (3*1), i8155_intf[0]) MCFG_I8155_ADD("i8155_2", XTAL_15MHz / (3*32), i8155_intf[1]) MCFG_NVRAM_ADD_0FILL("nvram") MCFG_TIMER_DRIVER_ADD("heartbeat", meyc8088_state, heartbeat_callback) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_RAW_PARAMS(XTAL_15MHz/3, 320, 0, 256, 261, 0, 224) MCFG_SCREEN_UPDATE_DRIVER(meyc8088_state, screen_update_meyc8088) MCFG_SCREEN_VBLANK_DRIVER(meyc8088_state, screen_eof_meyc8088) MCFG_PALETTE_LENGTH(32) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_DAC_ADD("dac") MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) MACHINE_CONFIG_END ROM_START( gldarrow ) ROM_REGION( 0x100000, "maincpu", 0 ) ROM_LOAD( "3.14h", 0x0fa000, 0x002000, CRC(a4acc6df) SHA1(b25f2cf8154932834100615e2e9c44ef47a15fea) ) ROM_LOAD( "2.13h", 0x0fc000, 0x002000, CRC(595e380d) SHA1(6f8e58f646106d33cb651d97ca6a1133f7b05373) ) ROM_LOAD( "1.12h", 0x0fe000, 0x002000, CRC(71bd0e39) SHA1(15345f5726cd33ecb1b2da05f2852b6cc3ac7747) ) ROM_REGION( 0x20, "proms", 0 ) ROM_LOAD( "prom.2c", 0x00, 0x20, CRC(2839bb14) SHA1(c9acdb3ae00c2f9344aedaf77c0f4e860a3184fc) ) // M3-7602-5 color prom ROM_END GAMEL(1984, gldarrow, 0, meyc8088, gldarrow, driver_device, 0, ROT0, "Meyco Games, Inc.", "Golden Arrow (Standard G8-03)", 0, layout_gldarrow )