diff options
Diffstat (limited to 'src/mame/drivers/meyc8088.cpp')
-rw-r--r-- | src/mame/drivers/meyc8088.cpp | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/src/mame/drivers/meyc8088.cpp b/src/mame/drivers/meyc8088.cpp new file mode 100644 index 00000000000..ddc5621cb69 --- /dev/null +++ b/src/mame/drivers/meyc8088.cpp @@ -0,0 +1,403 @@ +// license:BSD-3-Clause +// copyright-holders:hap, Roberto Fresca +/**************************************************************** + + 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"), + m_dac(*this, "dac") + { } + + required_device<cpu_device> m_maincpu; + required_shared_ptr<UINT8> m_vram; + required_device<timer_device> m_heartbeat; + required_device<dac_device> m_dac; + + 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); + DECLARE_PALETTE_INIT(meyc8088); + 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 } } + } +}; + +PALETTE_INIT_MEMBER(meyc8088_state, meyc8088) +{ + const UINT8 *color_prom = memregion("proms")->base(); + std::vector<rgb_t> rgb; + + compute_res_net_all(rgb, color_prom, meyc8088_decode_info, meyc8088_net_info); + palette.set_pen_colors(0, 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 &= read_safe(ioport("C0"), 0); // bit switches + if (~m_common & 2) ret &= read_safe(ioport("C1"), 0); // control switches + if (~m_common & 4) ret &= read_safe(ioport("C2"), 0); // light switches + if (~m_common & 8) ret &= read_safe(ioport("C3"), 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) +{ + m_dac->write_signed8(state ? 0x7f : 0); +} + + +/*************************************************************************** + + 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_DEVICE_ADD("i8155_1", I8155, XTAL_15MHz / (3*1)) + // all ports set to input + MCFG_I8155_IN_PORTA_CB(READ8(meyc8088_state, meyc8088_input_r)) + MCFG_I8155_IN_PORTB_CB(IOPORT("SW")) + MCFG_I8155_IN_PORTC_CB(READ8(meyc8088_state, meyc8088_status_r)) + // i8251A trigger txc/rxc (debug related, unpopulated on sold boards) + + MCFG_DEVICE_ADD("i8155_2", I8155, XTAL_15MHz / (3*32)) + // all ports set to output + MCFG_I8155_OUT_PORTA_CB(WRITE8(meyc8088_state, meyc8088_lights2_w)) + MCFG_I8155_OUT_PORTB_CB(WRITE8(meyc8088_state, meyc8088_lights1_w)) + MCFG_I8155_OUT_PORTC_CB(WRITE8(meyc8088_state, meyc8088_common_w)) + MCFG_I8155_OUT_TIMEROUT_CB(WRITELINE(meyc8088_state, meyc8088_sound_out)) + + 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_SCREEN_PALETTE("palette") + + MCFG_PALETTE_ADD("palette", 32) + MCFG_PALETTE_INIT_OWNER(meyc8088_state, meyc8088) + + /* 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 ) |