/*************************************************************************** Videa Gridlee hardware driver by Aaron Giles special thanks to Howard Delman, Roger Hector and Ed Rotberg for allowing distribution of the Gridlee ROMs Based on the Bally/Sente SAC system Games supported: * Gridlee Known bugs: * analog sound hardware is unemulated **************************************************************************** Memory map **************************************************************************** ======================================================================== CPU #1 ======================================================================== 0000-007F R/W xxxxxxxx Sprite RAM (32 entries x 4 bytes) R/W xxxxxxxx (0: image number) R/W -------- (1: unused?) R/W xxxxxxxx (2: Y position, offset by 17 pixels) R/W xxxxxxxx (3: X position) 0080-07FF R/W xxxxxxxx Program RAM 0800-7FFF R/W xxxxxxxx Video RAM (256x240 pixels) R/W xxxx---- (left pixel) R/W ----xxxx (right pixel) 9000 W -------x Player 1 LED 9010 W -------x Player 2 LED 9020 W -------x Coin counter 9060 W -------x Unknown (written once at startup) 9070 W -------x Cocktail flip 9200 W --xxxxxx Palette base select 9380 W -------- Watchdog reset 9500 R ---xxxxx Trackball Y position R ---x---- Sign of delta R ----xxxx Cumulative magnitude 9501 R ---xxxxx Trackball X position R ---x---- Sign of delta R ----xxxx Cumulative magnitude 9502 R ------x- Fire button 2 R -------x Fire button 1 9503 R --xx---- Coinage switches R ----x--- 2 player start R -----x-- 1 player start R ------x- Right coin R -------x Left coin 9600 R x------- Reset game data switch R -x------ Reset hall of fame switch R --x----- Cocktail/upright switch R ---x---- Free play switch R ----xx-- Lives switches R ------xx Bonus lives switches 9700 R x------- VBLANK R -x------ Service advance R --x----- Service switch 9820 R xxxxxxxx Random number generator 9828-982C W ???????? Unknown 9830-983F W ???????? Unknown (sound-related) 9C00-9CFF R/W -------- NVRAM A000-FFFF R xxxxxxxx Fixed program ROM ======================================================================== Interrupts: NMI not connected IRQ generated by 32L FIRQ generated by ??? (but should be around scanline 92) ======================================================================== ***************************************************************************/ #include "emu.h" #include "cpu/m6809/m6809.h" #include "sound/samples.h" #include "machine/nvram.h" #include "includes/gridlee.h" /* constants */ #define FIRQ_SCANLINE 92 /* local prototypes */ static void poly17_init(running_machine &machine); /************************************* * * Interrupt handling * *************************************/ static TIMER_CALLBACK( irq_off_tick ) { cputag_set_input_line(machine, "maincpu", M6809_IRQ_LINE, CLEAR_LINE); } static TIMER_CALLBACK( irq_timer_tick ) { gridlee_state *state = machine.driver_data(); /* next interrupt after scanline 256 is scanline 64 */ if (param == 256) state->m_irq_timer->adjust(machine.primary_screen->time_until_pos(64), 64); else state->m_irq_timer->adjust(machine.primary_screen->time_until_pos(param + 64), param + 64); /* IRQ starts on scanline 0, 64, 128, etc. */ cputag_set_input_line(machine, "maincpu", M6809_IRQ_LINE, ASSERT_LINE); /* it will turn off on the next HBLANK */ state->m_irq_off->adjust(machine.primary_screen->time_until_pos(param, GRIDLEE_HBSTART)); } static TIMER_CALLBACK( firq_off_tick ) { cputag_set_input_line(machine, "maincpu", M6809_FIRQ_LINE, CLEAR_LINE); } static TIMER_CALLBACK( firq_timer_tick ) { gridlee_state *state = machine.driver_data(); /* same time next frame */ state->m_firq_timer->adjust(machine.primary_screen->time_until_pos(FIRQ_SCANLINE)); /* IRQ starts on scanline FIRQ_SCANLINE? */ cputag_set_input_line(machine, "maincpu", M6809_FIRQ_LINE, ASSERT_LINE); /* it will turn off on the next HBLANK */ state->m_firq_off->adjust(machine.primary_screen->time_until_pos(FIRQ_SCANLINE, GRIDLEE_HBSTART)); } static MACHINE_START( gridlee ) { gridlee_state *state = machine.driver_data(); state->m_maincpu = machine.device("maincpu"); /* create the polynomial tables */ poly17_init(machine); state_save_register_global_array(machine, state->m_last_analog_input); state_save_register_global_array(machine, state->m_last_analog_output); state->m_irq_off = machine.scheduler().timer_alloc(FUNC(irq_off_tick)); state->m_irq_timer = machine.scheduler().timer_alloc(FUNC(irq_timer_tick)); state->m_firq_off = machine.scheduler().timer_alloc(FUNC(firq_off_tick)); state->m_firq_timer = machine.scheduler().timer_alloc(FUNC(firq_timer_tick)); } static MACHINE_RESET( gridlee ) { gridlee_state *state = machine.driver_data(); /* start timers to generate interrupts */ state->m_irq_timer->adjust(machine.primary_screen->time_until_pos(0)); state->m_firq_timer->adjust(machine.primary_screen->time_until_pos(FIRQ_SCANLINE)); } /************************************* * * ADC handlers * *************************************/ static READ8_HANDLER( analog_port_r ) { gridlee_state *state = space->machine().driver_data(); int delta, sign, magnitude; UINT8 newval; static const char *const portnames[] = { "TRACK0_Y", "TRACK0_X", "TRACK1_Y", "TRACK1_X" }; /* first read the new trackball value and compute the signed delta */ newval = input_port_read(space->machine(), portnames[offset + 2 * state->m_cocktail_flip]); delta = (int)newval - (int)state->m_last_analog_input[offset]; /* handle the case where we wrap around from 0x00 to 0xff, or vice versa */ if (delta >= 0x80) delta -= 0x100; if (delta <= -0x80) delta += 0x100; /* just return the previous value for deltas less than 2, which are ignored */ if (delta >= -1 && delta <= 1) return state->m_last_analog_output[offset]; state->m_last_analog_input[offset] = newval; /* compute the sign and the magnitude */ sign = (delta < 0) ? 0x10 : 0x00; magnitude = (delta < 0) ? -delta : delta; /* add the magnitude to the running total */ state->m_last_analog_output[offset] += magnitude; /* or in the sign bit and return that */ return (state->m_last_analog_output[offset] & 15) | sign; } /************************************* * * MM5837 noise generator * * NOTE: this is stolen straight from * POKEY.c * * NOTE: this is assumed to be the * same as balsente.c * *************************************/ #define POLY17_BITS 17 #define POLY17_SIZE ((1 << POLY17_BITS) - 1) #define POLY17_SHL 7 #define POLY17_SHR 10 #define POLY17_ADD 0x18000 static void poly17_init(running_machine &machine) { gridlee_state *state = machine.driver_data(); UINT32 i, x = 0; UINT8 *p, *r; /* allocate memory */ p = state->m_poly17 = auto_alloc_array(machine, UINT8, 2 * (POLY17_SIZE + 1)); r = state->m_rand17 = state->m_poly17 + POLY17_SIZE + 1; /* generate the polynomial */ for (i = 0; i < POLY17_SIZE; i++) { /* store new values */ *p++ = x & 1; *r++ = x >> 3; /* calculate next bit */ x = ((x << POLY17_SHL) + (x >> POLY17_SHR) + POLY17_ADD) & POLY17_SIZE; } } /************************************* * * Hardware random numbers * *************************************/ static READ8_HANDLER( random_num_r ) { gridlee_state *state = space->machine().driver_data(); UINT32 cc; /* CPU runs at 1.25MHz, noise source at 100kHz --> multiply by 12.5 */ cc = state->m_maincpu->total_cycles(); /* 12.5 = 8 + 4 + 0.5 */ cc = (cc << 3) + (cc << 2) + (cc >> 1); return state->m_rand17[cc & POLY17_SIZE]; } /************************************* * * Misc handlers * *************************************/ static WRITE8_HANDLER( led_0_w ) { set_led_status(space->machine(), 0, data & 1); logerror("LED 0 %s\n", (data & 1) ? "on" : "off"); } static WRITE8_HANDLER( led_1_w ) { set_led_status(space->machine(), 1, data & 1); logerror("LED 1 %s\n", (data & 1) ? "on" : "off"); } static WRITE8_HANDLER( gridlee_coin_counter_w ) { coin_counter_w(space->machine(), 0, data & 1); logerror("coin counter %s\n", (data & 1) ? "on" : "off"); } /************************************* * * Main CPU memory handlers * *************************************/ /* CPU 1 read addresses */ static ADDRESS_MAP_START( cpu1_map, AS_PROGRAM, 8 ) AM_RANGE(0x0000, 0x07ff) AM_RAM AM_BASE_MEMBER(gridlee_state, m_spriteram) AM_RANGE(0x0800, 0x7fff) AM_RAM_WRITE(gridlee_videoram_w) AM_BASE_MEMBER(gridlee_state, m_videoram) AM_RANGE(0x9000, 0x9000) AM_WRITE(led_0_w) AM_RANGE(0x9010, 0x9010) AM_WRITE(led_1_w) AM_RANGE(0x9020, 0x9020) AM_WRITE(gridlee_coin_counter_w) /* { 0x9060, 0x9060, unknown - only written to at startup */ AM_RANGE(0x9070, 0x9070) AM_WRITE(gridlee_cocktail_flip_w) AM_RANGE(0x9200, 0x9200) AM_WRITE(gridlee_palette_select_w) AM_RANGE(0x9380, 0x9380) AM_WRITE(watchdog_reset_w) AM_RANGE(0x9500, 0x9501) AM_READ(analog_port_r) AM_RANGE(0x9502, 0x9502) AM_READ_PORT("IN0") AM_RANGE(0x9503, 0x9503) AM_READ_PORT("IN1") AM_RANGE(0x9600, 0x9600) AM_READ_PORT("DSW") AM_RANGE(0x9700, 0x9700) AM_READ_PORT("IN2") AM_WRITENOP AM_RANGE(0x9820, 0x9820) AM_READ(random_num_r) AM_RANGE(0x9828, 0x993f) AM_DEVWRITE("gridlee", gridlee_sound_w) AM_RANGE(0x9c00, 0x9cff) AM_RAM AM_SHARE("nvram") AM_RANGE(0xa000, 0xffff) AM_ROM ADDRESS_MAP_END /************************************* * * Port definitions * *************************************/ static INPUT_PORTS_START( gridlee ) PORT_START("TRACK0_Y") /* 9500 (fake) */ PORT_BIT( 0xff, 0, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_START("TRACK0_X") /* 9501 (fake) */ PORT_BIT( 0xff, 0, IPT_TRACKBALL_X ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_REVERSE PORT_START("TRACK1_Y") /* 9500 (fake) */ PORT_BIT( 0xff, 0, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_COCKTAIL PORT_START("TRACK1_X") /* 9501 (fake) */ PORT_BIT( 0xff, 0, IPT_TRACKBALL_X ) PORT_SENSITIVITY(20) PORT_KEYDELTA(8) PORT_REVERSE PORT_COCKTAIL PORT_START("IN0") /* 9502 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL PORT_BIT( 0xfc, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_START("IN1") /* 9503 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 ) PORT_DIPNAME( 0x30, 0x00, DEF_STR( Coinage )) PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C )) PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C )) PORT_DIPSETTING( 0x10, DEF_STR( 1C_2C )) PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_START("DSW") /* 9600 */ PORT_DIPNAME( 0x03, 0x01, DEF_STR( Bonus_Life )) PORT_DIPSETTING( 0x00, "8000 points" ) PORT_DIPSETTING( 0x01, "10000 points" ) PORT_DIPSETTING( 0x02, "12000 points" ) PORT_DIPSETTING( 0x03, "14000 points" ) PORT_DIPNAME( 0x0c, 0x04, DEF_STR( Lives )) PORT_DIPSETTING( 0x00, "2" ) PORT_DIPSETTING( 0x04, "3" ) PORT_DIPSETTING( 0x08, "4" ) PORT_DIPSETTING( 0x0c, "5" ) PORT_DIPNAME( 0x10, 0x00, DEF_STR( Free_Play )) PORT_DIPSETTING( 0x00, DEF_STR( Off )) PORT_DIPSETTING( 0x10, DEF_STR( On )) PORT_DIPNAME( 0x20, 0x00, DEF_STR( Cabinet ) ) PORT_DIPSETTING( 0x00, DEF_STR( Upright ) ) PORT_DIPSETTING( 0x20, DEF_STR( Cocktail ) ) PORT_DIPNAME( 0x40, 0x00, "Reset Hall of Fame" ) PORT_DIPSETTING( 0x00, DEF_STR( No )) PORT_DIPSETTING( 0x40, DEF_STR( Yes )) PORT_DIPNAME( 0x80, 0x00, "Reset Game Data" ) PORT_DIPSETTING( 0x00, DEF_STR( No )) PORT_DIPSETTING( 0x80, DEF_STR( Yes )) PORT_START("IN2") /* 9700 */ PORT_BIT( 0x1f, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_SERVICE( 0x20, IP_ACTIVE_LOW ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK ) INPUT_PORTS_END /************************************* * * Sound definitions * *************************************/ static const char *const sample_names[] = { "*gridlee", "bounce1.wav", "bounce2.wav", 0 /* end of array */ }; static const samples_interface gridlee_samples_interface = { 8, /* 8 channels */ sample_names }; /************************************* * * Machine driver * *************************************/ static MACHINE_CONFIG_START( gridlee, gridlee_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", M6809, GRIDLEE_CPU_CLOCK) MCFG_CPU_PROGRAM_MAP(cpu1_map) MCFG_MACHINE_START(gridlee) MCFG_MACHINE_RESET(gridlee) MCFG_NVRAM_ADD_0FILL("nvram") /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MCFG_SCREEN_RAW_PARAMS(GRIDLEE_PIXEL_CLOCK, GRIDLEE_HTOTAL, GRIDLEE_HBEND, GRIDLEE_HBSTART, GRIDLEE_VTOTAL, GRIDLEE_VBEND, GRIDLEE_VBSTART) MCFG_SCREEN_UPDATE(gridlee) MCFG_PALETTE_LENGTH(2048) MCFG_PALETTE_INIT(gridlee) MCFG_VIDEO_START(gridlee) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("gridlee", GRIDLEE, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_SOUND_ADD("samples", SAMPLES, 0) MCFG_SOUND_CONFIG(gridlee_samples_interface) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.40) MACHINE_CONFIG_END /************************************* * * ROM definitions * *************************************/ ROM_START( gridlee ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "gridfnla.bin", 0xa000, 0x1000, CRC(1c43539e) SHA1(8b4a6f5c2c22bb021937157606d2129e2b01f718) ) ROM_LOAD( "gridfnlb.bin", 0xb000, 0x1000, CRC(c48b91b8) SHA1(651210470ddf7c14f16f6c3046a9b8e903824ab8) ) ROM_LOAD( "gridfnlc.bin", 0xc000, 0x1000, CRC(6ad436dd) SHA1(f393b63077f249d34a8e85649aea58b27a0425b1) ) ROM_LOAD( "gridfnld.bin", 0xd000, 0x1000, CRC(f7188ddb) SHA1(eeb3f7dd8c61689cdd9992280ee1b3b5dc79a54c) ) ROM_LOAD( "gridfnle.bin", 0xe000, 0x1000, CRC(d5330bee) SHA1(802bb5705d4cd22d556c1bcbcf730d688ca8e8ab) ) ROM_LOAD( "gridfnlf.bin", 0xf000, 0x1000, CRC(695d16a3) SHA1(53d22cbedbedad8c89a964b6a38b7075c43cf03b) ) ROM_REGION( 0x4000, "gfx1", 0 ) ROM_LOAD( "gridpix0.bin", 0x0000, 0x1000, CRC(e6ea15ae) SHA1(2c482e25ea44aafd63ca5533b5a2e2dd8bf89365) ) ROM_LOAD( "gridpix1.bin", 0x1000, 0x1000, CRC(d722f459) SHA1(8cad028eefbba387bdd57fb8bb3a855ae314fb32) ) ROM_LOAD( "gridpix2.bin", 0x2000, 0x1000, CRC(1e99143c) SHA1(89c2f772cd15f2c37c8167a03dc4c7d1c923e4c3) ) ROM_LOAD( "gridpix3.bin", 0x3000, 0x1000, CRC(274342a0) SHA1(818cfd4132183d922ff4585c73f2cd6e4546c75b) ) ROM_REGION( 0x1800, "proms", 0 ) ROM_LOAD( "grdrprom.bin", 0x0000, 0x800, CRC(f28f87ed) SHA1(736f38c3ec5455de1266aad348ba708d7201b21a) ) ROM_LOAD( "grdgprom.bin", 0x0800, 0x800, CRC(921b0328) SHA1(59d1a3d3a90bd680a75adca5dd1b4682236c673b) ) ROM_LOAD( "grdbprom.bin", 0x1000, 0x800, CRC(04350348) SHA1(098fec3073143e0b8746e728d7d321f2a353286f) ) ROM_END /************************************* * * Game drivers * *************************************/ GAME( 1983, gridlee, 0, gridlee, gridlee, 0, ROT0, "Videa", "Gridlee", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND )