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Diffstat (limited to 'src/mame/drivers/spiders.cpp')
-rw-r--r-- | src/mame/drivers/spiders.cpp | 720 |
1 files changed, 720 insertions, 0 deletions
diff --git a/src/mame/drivers/spiders.cpp b/src/mame/drivers/spiders.cpp new file mode 100644 index 00000000000..28b2c2e331c --- /dev/null +++ b/src/mame/drivers/spiders.cpp @@ -0,0 +1,720 @@ +// license:BSD-3-Clause +// copyright-holders:Zsolt Vasvari +/*************************************************************************** + + Sigma Spiders hardware + + original driver by K.Wilkins May 1998 + updates by Zsolt Vasvari + + Games Supported: + * Spiders (2 sets) + * Spinner (bootleg) + + Known bugs: + * None at this time + + + Memory map information + ---------------------- + + Main CPU - Read Range + + $0000-$1bff Video Memory (bit0) + $4000-$5bff Video Memory (bit1) + $8000-$9bff Video Memory (bit2) + $c000-$c001 6845 CRT Controller (mc6845) + $c020-$c027 NVRAM + $c044-$c047 MC6821 PIA 1 (Control input port - all input) + $c048-$c04b MC6821 PIA 2 (Sprite data port - see machine/spiders.c) + $c050-$c053 MC6821 PIA 3 (Sound control - all output) + $c060 Dip Switch 1 + $c080 Dip Switch 2 + $c0a0 Dip Switch 3 + $c100-ffff ROM SPACE + + Main CPU - Write Range + + $0000-$1bff Video Memory (bit0) + $4000-$5bff Video Memory (bit1) + $8000-$9bff Video Memory (bit2) + $c000-$c001 6845 CRT Controller (mc6845) + $c044-$c047 MC6821 PIA 1 + $c048-$c04b MC6821 PIA 2 (Video port) + $c050-$c053 MC6821 PIA 3 + + + DIP SWITCH 1 + ------------ + + 1 2 3 4 5 6 7 8 COIN/CREDIT + ON ON ON FREE PLAY + ON ON OFF 1/2 + ON OFF ON 1/3 + OFF ON ON 2/1 + ON OFF OFF 4/5 + OFF OFF OFF 1/1 + + DIP SWITCH 2 + ------------ + + 1 2 3 4 5 6 7 8 + ON ON MODE A A' + ON OFF A B' + OFF ON B A' + OFF OFF B B' + ON ON 14 # OF SPIDERS WHICH LAND TO + ON OFF 20 COMPLETE SPIDER BELT + OFF ON 26 + OFF OFF 16 + ON 4 # 0F SPARE GUNS + OFF 3 + ON ON NONE SCORE FOR BONUS GUN + ON OFF 20K + OFF ON 25K + OFF OFF 15K + ON GIANT SPIDER AFTER FIRST SCREEN + OFF GIANT SPIDER AFTER EVERY SCREEN + + PATTERN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 + MODE A 27 36 45 54 63 72 81 98 45 54 63 72 81 98 PCS + MODE B 20 27 34 41 48 55 62 69 34 41 48 55 62 69 PCS + MODE A' 1 1 1 3.5 3.5 4 4.5 5 1 3.5 3.5 4 4.5 5 SECONDS + MODE B' .7 .7 .7 2 3 3.2 3.4 4 .7 2 3 2.3 3.4 4 SECONDS + + MODE A & B FOR THE NUMBER OF GROWABLE COCOONS + MODE A' & B' FOR THE FREQUENCY OF SPIDERS APPEARANCE + + + DIP SWITCH 3 + ------------ + + 1 2 3 4 5 6 7 8 + X VIDEO FLIP + ON UPRIGHT + OFF TABLE + + SWITCHES 3,4,5 FOR ADJUSTING PICTURE VERTICALLY + SWITCHES 6,7,8 FOR ADJUSTING PICTURE HORIZONTALLY + + + Unpopulated Switches + -------------------- + + PS1 (Display Crosshatch) - Connected to PIA1 CB1 via pull-up + PS2 (Coin input, bypass counter) - Connected to PIA1 PA1 via pull-up and invertor + PS3 (Display coin counter) - Connected to PIA1 PA2 via pull-up and invertor + + + Graphic notes + ------------- + Following roms appear to have graphic data + + * Mapped in main CPU space + + * SP1.BIN - Appears to have some sprites in it. + * SP2.BIN - Appears to have some 16x16 sprites. (Includes the word SIGMA) + * SP3.BIN - Appears to have 2-4 sprites 16x16 - spiders + * SP4.BIN - CPU Code 6809 - Main + SP5.BIN - Some 8x8 and 16x16 tiles/sprites + SP6.BIN - Some 8x8 tiles + SP7.BIN - Tiles/Sprites 8x8 + SP8.BIN - Tiles/Sprites 8x8 + SP9A.BIN - Tiles/Sprites 8x8 + SP9B.BIN - Tiles/Sprites 8x8 + SP10A.BIN - Tiles/Sprites 8x8 + SP10B.BIN - CPU Code 6802 - Sound + + Spiders has a fully bitmapped display and all sprite drawing is handled by the CPU + hence no gfxdecode is done on the sprite ROMS, the CPU accesses them via PIA2. + + Screen is arranged in three memory areas with three bits being combined from each + area to produce a 3bit colour send directly to the screen. + + $0000-$1bff, $4000-$5bff, $8000-$9bff Bank 0 + $2000-$3bff, %6000-$7bff, $a000-$bbff Bank 1 + + The game normally runs from bank 0 only, but when lots of screen changes are required + e.g spider or explosion then it implements a double buffered scheme with bank 1. + + The ram bank for screens is continuous from $0000-$bfff but is physically arranged + as 3 banks of 16k (8x16k DRAM!). The CPU stack/variables etc are stored in the unused + spaces between screens. + + + CODE NOTES + ---------- + + 6809 Data page = $1c00 (DP=1c) + + Known data page contents + $05 - Dip switch 1 copy + $06 - Dip switch 2 copy (inverted) + $07 - Dip switch 3 copy + $18 - Bonus Gun Score + $1d - Spiders to complete belt after dipsw decode + + + $c496 - Wait for vblank ($c04a bit 7 goes high) + $f9cf - Clear screen (Bank0&1) + $c8c6 - RAM test of sorts, called from IRQ handler? + $de2f - Delay loop. + $f9bb - Memory clearance routine + $c761 - Partial DipSW decode + $F987 - Addresses table at $f98d containing four structs: + 3c 0C 04 0D 80 (Inverted screen bank 0) + 34 0C 00 0D 00 (Normal screen bank 0) + 3C 0C 40 0D 80 (Inverted screen bank 1) + 34 0C 44 0D 00 (Inverted screen bank 1) + XX Written to PIA2 Reg 3 - B control + XX XX Written to CRTC addr/data + XX XX Written to CRTC addr/data + These tables are used for frame flipping + + + Video access port definition (On PIA 2) + + Bit 7 6 5 4 3 2 1 0 + X Mode Setup/Read 1/0 + X X Latch select (see below) + X X X X Data nibble + + When in setup mode data is clocked into the latch by a read from port A + When in read mode the read from port A auto increments the address. + + Latch 0 - Low byte low nibble + 1 - Low byte high nibble + 2 - High order low nibble + 3 - High order high nibble + +***************************************************************************/ + +#include "emu.h" +#include "machine/rescap.h" +#include "cpu/m6800/m6800.h" +#include "cpu/m6809/m6809.h" +#include "video/mc6845.h" +#include "machine/6821pia.h" +#include "machine/74123.h" +#include "includes/spiders.h" +#include "machine/nvram.h" + + +#define MAIN_CPU_MASTER_CLOCK (11200000) +#define PIXEL_CLOCK (MAIN_CPU_MASTER_CLOCK / 2) +#define CRTC_CLOCK (MAIN_CPU_MASTER_CLOCK / 16) + + +/************************************* + * + * Prototypes + * + *************************************/ + + + + + + + +/************************************* + * + * Interrupt generation + * + *************************************/ + +WRITE_LINE_MEMBER(spiders_state::main_cpu_irq) +{ + pia6821_device *pia1 = machine().device<pia6821_device>("pia1"); + pia6821_device *pia2 = machine().device<pia6821_device>("pia2"); + pia6821_device *pia3 = machine().device<pia6821_device>("pia3"); + int combined_state = pia1->irq_a_state() | pia1->irq_b_state() | + pia2->irq_b_state() | + pia3->irq_a_state() | pia3->irq_b_state(); + + m_maincpu->set_input_line(M6809_IRQ_LINE, combined_state ? ASSERT_LINE : CLEAR_LINE); +} + + +WRITE_LINE_MEMBER(spiders_state::main_cpu_firq) +{ + m_maincpu->set_input_line(M6809_FIRQ_LINE, state ? ASSERT_LINE : CLEAR_LINE); +} + + +WRITE_LINE_MEMBER(spiders_state::audio_cpu_irq) +{ + m_audiocpu->set_input_line(M6800_IRQ_LINE, state ? ASSERT_LINE : CLEAR_LINE); +} + + + +/************************************* + * + * PIA1 - Main CPU + * + *************************************/ + +INTERRUPT_GEN_MEMBER(spiders_state::update_pia_1) +{ + pia6821_device *pia1 = machine().device<pia6821_device>("pia1"); + /* update the different PIA pins from the input ports */ + + /* CA1 - copy of PA1 (COIN1) */ + pia1->ca1_w(ioport("IN0")->read() & 0x02); + + /* CA2 - copy of PA0 (SERVICE1) */ + pia1->ca2_w(ioport("IN0")->read() & 0x01); + + /* CB1 - (crosshatch) */ + pia1->cb1_w(ioport("XHATCH")->read()); + + /* CB2 - NOT CONNECTED */ +} + + + +/************************************* + * + * IC60 - 74123 + * + * This timer is responsible for + * delaying the setting of PIA2's + * CA1 line. This delay ensures that + * CA1 is only changed in the VBLANK + * region, but not in HBLANK + * + *************************************/ + +WRITE8_MEMBER(spiders_state::ic60_74123_output_changed) +{ + pia6821_device *pia2 = machine().device<pia6821_device>("pia2"); + pia2->ca1_w(data); +} + +/************************************* + * + * Machine start + * + *************************************/ + +void spiders_state::machine_start() +{ + /* setup for save states */ + save_item(NAME(m_flipscreen)); + save_item(NAME(m_gfx_rom_address)); + save_item(NAME(m_gfx_rom_ctrl_mode)); + save_item(NAME(m_gfx_rom_ctrl_latch)); + save_item(NAME(m_gfx_rom_ctrl_data)); +} + + + +/************************************* + * + * Video system + * + *************************************/ + + +WRITE_LINE_MEMBER(spiders_state::flipscreen_w) +{ + m_flipscreen = state; +} + + +MC6845_UPDATE_ROW( spiders_state::crtc_update_row ) +{ + UINT8 x = 0; + + for (UINT8 cx = 0; cx < x_count; cx++) + { + UINT8 data1, data2, data3; + + /* the memory is hooked up to the MA, RA lines this way */ + offs_t offs = ((ma << 3) & 0x3f00) | + ((ra << 5) & 0x00e0) | + ((ma << 0) & 0x001f); + + if (m_flipscreen) + offs = offs ^ 0x3fff; + + data1 = m_ram[0x0000 | offs]; + data2 = m_ram[0x4000 | offs]; + data3 = m_ram[0x8000 | offs]; + + for (int i = 0; i < 8; i++) + { + UINT8 color; + + if (m_flipscreen) + { + color = ((data3 & 0x80) >> 5) | + ((data2 & 0x80) >> 6) | + ((data1 & 0x80) >> 7); + + data1 = data1 << 1; + data2 = data2 << 1; + data3 = data3 << 1; + } + else + { + color = ((data3 & 0x01) << 2) | + ((data2 & 0x01) << 1) | + ((data1 & 0x01) << 0); + + data1 = data1 >> 1; + data2 = data2 >> 1; + data3 = data3 >> 1; + } + + bitmap.pix32(y, x) = m_palette->pen_color(color); + + x = x + 1; + } + + ma = ma + 1; + } +} + + +WRITE_LINE_MEMBER(spiders_state::display_enable_changed) +{ + machine().device<ttl74123_device>("ic60")->a_w(generic_space(), 0, state); +} + + +/************************************* + * + * Graphics ROM access - see the + * comments section for description + * + *************************************/ + +WRITE8_MEMBER(spiders_state::gfx_rom_intf_w) +{ + m_gfx_rom_ctrl_mode = ( data >> 7) & 0x01; + m_gfx_rom_ctrl_latch = ( data >> 4) & 0x03; + m_gfx_rom_ctrl_data = (~data >> 0) & 0x0f; +} + + +READ8_MEMBER(spiders_state::gfx_rom_r) +{ + UINT8 ret; + + if (m_gfx_rom_ctrl_mode) + { + UINT8 *rom = memregion("gfx1")->base(); + + ret = rom[m_gfx_rom_address]; + + m_gfx_rom_address = m_gfx_rom_address + 1; + } + else + { + UINT8 shift_count = m_gfx_rom_ctrl_latch << 2; + m_gfx_rom_address = (m_gfx_rom_address & ~(0x0f << shift_count)) | (m_gfx_rom_ctrl_data << shift_count); + + ret = 0; + } + + return ret; +} + + + +/************************************* + * + * Memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( spiders_main_map, AS_PROGRAM, 8, spiders_state ) + AM_RANGE(0x0000, 0xbfff) AM_RAM AM_SHARE("ram") + AM_RANGE(0xc000, 0xc000) AM_DEVWRITE("crtc", mc6845_device, address_w) + AM_RANGE(0xc001, 0xc001) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w) + AM_RANGE(0xc020, 0xc027) AM_RAM AM_SHARE("nvram") + AM_RANGE(0xc044, 0xc047) AM_DEVREADWRITE("pia1", pia6821_device, read, write) + AM_RANGE(0xc048, 0xc04b) AM_DEVREADWRITE("pia2", pia6821_device, read_alt, write_alt) + AM_RANGE(0xc050, 0xc053) AM_DEVREADWRITE("pia3", pia6821_device, read, write) + AM_RANGE(0xc060, 0xc060) AM_READ_PORT("DSW1") + AM_RANGE(0xc080, 0xc080) AM_READ_PORT("DSW2") + AM_RANGE(0xc0a0, 0xc0a0) AM_READ_PORT("DSW3") + AM_RANGE(0xc100, 0xffff) AM_ROM +ADDRESS_MAP_END + + +static ADDRESS_MAP_START( spiders_audio_map, AS_PROGRAM, 8, spiders_state ) + AM_RANGE(0x0000, 0x007f) AM_RAM + AM_RANGE(0x0080, 0x0083) AM_DEVREADWRITE("pia4", pia6821_device, read, write) + AM_RANGE(0xf800, 0xffff) AM_ROM +ADDRESS_MAP_END + + + +/************************************* + * + * Port definition + * + *************************************/ + +static INPUT_PORTS_START( spiders ) + /* PIA1 PA0 - PA7 */ + PORT_START("IN0") /* IN0 */ + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SERVICE1 ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN1 ) + PORT_SERVICE_NO_TOGGLE( 0x04, IP_ACTIVE_HIGH ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) + PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_START1 ) + PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 ) + PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SERVICE2 ) + + /* PIA1 PB0 - PB7 */ + PORT_START("IN1") /* IN1 */ + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(2) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(2) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1) + PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START("DSW1") /* IN2, DSW1 */ + PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:1,2,3") + PORT_DIPSETTING( 0x01, DEF_STR( 2C_1C ) ) + PORT_DIPSETTING( 0x07, DEF_STR( 1C_1C ) ) + PORT_DIPSETTING( 0x06, DEF_STR( 4C_5C ) ) + PORT_DIPSETTING( 0x04, DEF_STR( 1C_2C ) ) + PORT_DIPSETTING( 0x02, DEF_STR( 1C_3C ) ) + PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) ) + PORT_BIT( 0xf8, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("DSW2") /* IN3, DSW2 */ + PORT_DIPNAME( 0x03, 0x03, "Play Mode" ) PORT_DIPLOCATION("SW2:1,2") + PORT_DIPSETTING( 0x00, "A A'" ) + PORT_DIPSETTING( 0x01, "A B'" ) + PORT_DIPSETTING( 0x02, "B A'" ) + PORT_DIPSETTING( 0x03, "B B'" ) + PORT_DIPNAME( 0x0c, 0x0c, "Spiders to Complete Belt" ) PORT_DIPLOCATION("SW2:3,4") + PORT_DIPSETTING( 0x00, "14" ) + PORT_DIPSETTING( 0x0c, "16" ) + PORT_DIPSETTING( 0x04, "20" ) + PORT_DIPSETTING( 0x08, "26" ) + PORT_DIPNAME( 0x10, 0x10, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW2:5") + PORT_DIPSETTING( 0x10, "3" ) + PORT_DIPSETTING( 0x00, "4" ) + PORT_DIPNAME( 0x60, 0x60, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW2:6,7") + PORT_DIPSETTING( 0x00, DEF_STR( None ) ) + PORT_DIPSETTING( 0x60, "15K" ) + PORT_DIPSETTING( 0x20, "20K" ) + PORT_DIPSETTING( 0x40, "25K" ) + PORT_DIPNAME( 0x80, 0x00, "Giant Spiders" ) PORT_DIPLOCATION("SW2:8") + PORT_DIPSETTING( 0x00, "First Screen" ) + PORT_DIPSETTING( 0x80, "Every Screen" ) + + PORT_START("DSW3") /* IN4, DSW3 */ + PORT_DIPNAME( 0x01, 0x00, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW3:1") + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x01, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW3:2") + PORT_DIPSETTING( 0x00, DEF_STR( Upright ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Cocktail ) ) + PORT_DIPNAME( 0x1c, 0x00, "Vertical Adjust" ) PORT_DIPLOCATION("SW3:3,4,5") + PORT_DIPSETTING( 0x00, "0" ) + PORT_DIPSETTING( 0x04, "1" ) + PORT_DIPSETTING( 0x08, "2" ) + PORT_DIPSETTING( 0x0c, "3" ) + PORT_DIPSETTING( 0x10, "4" ) + PORT_DIPSETTING( 0x14, "5" ) + PORT_DIPSETTING( 0x18, "6" ) + PORT_DIPSETTING( 0x1c, "7" ) + PORT_DIPNAME( 0xe0, 0x00, "Horizontal Adjust" ) PORT_DIPLOCATION("SW3:6,7,8") + PORT_DIPSETTING( 0x00, "0" ) + PORT_DIPSETTING( 0x20, "1" ) + PORT_DIPSETTING( 0x40, "2" ) + PORT_DIPSETTING( 0x60, "3" ) + PORT_DIPSETTING( 0x80, "4" ) + PORT_DIPSETTING( 0xa0, "5" ) + PORT_DIPSETTING( 0xc0, "6" ) + PORT_DIPSETTING( 0xe0, "7" ) + + PORT_START("XHATCH") /* connected to PIA1 CB1 input */ + PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("PS1 (Crosshatch)") PORT_CODE(KEYCODE_F1) + +INPUT_PORTS_END + + + +/************************************* + * + * Machine driver + * + *************************************/ + +static MACHINE_CONFIG_START( spiders, spiders_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", M6809, 2800000) + MCFG_CPU_PROGRAM_MAP(spiders_main_map) + MCFG_CPU_PERIODIC_INT_DRIVER(spiders_state, update_pia_1, 25) + + MCFG_CPU_ADD("audiocpu", M6802, 3000000) + MCFG_CPU_PROGRAM_MAP(spiders_audio_map) + + MCFG_NVRAM_ADD_0FILL("nvram") + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, 256, 0, 256, 256, 0, 256) /* temporary, CRTC will configure screen */ + MCFG_SCREEN_UPDATE_DEVICE("crtc", mc6845_device, screen_update) + + MCFG_PALETTE_ADD_3BIT_RGB("palette") + + MCFG_MC6845_ADD("crtc", MC6845, "screen", CRTC_CLOCK) + MCFG_MC6845_SHOW_BORDER_AREA(false) + MCFG_MC6845_CHAR_WIDTH(8) + MCFG_MC6845_UPDATE_ROW_CB(spiders_state, crtc_update_row) + MCFG_MC6845_OUT_DE_CB(WRITELINE(spiders_state, display_enable_changed)) + + /* 74LS123 */ + + MCFG_DEVICE_ADD("pia1", PIA6821, 0) + MCFG_PIA_READPA_HANDLER(IOPORT("IN0")) + MCFG_PIA_READPB_HANDLER(IOPORT("IN1")) + MCFG_PIA_IRQA_HANDLER(WRITELINE(spiders_state,main_cpu_irq)) + MCFG_PIA_IRQB_HANDLER(WRITELINE(spiders_state,main_cpu_irq)) + + MCFG_DEVICE_ADD("pia2", PIA6821, 0) + MCFG_PIA_READPA_HANDLER(READ8(spiders_state,gfx_rom_r)) + MCFG_PIA_WRITEPB_HANDLER(WRITE8(spiders_state,gfx_rom_intf_w)) + MCFG_PIA_CB2_HANDLER(WRITELINE(spiders_state,flipscreen_w)) + MCFG_PIA_IRQA_HANDLER(WRITELINE(spiders_state,main_cpu_firq)) + MCFG_PIA_IRQB_HANDLER(WRITELINE(spiders_state,main_cpu_irq)) + + MCFG_DEVICE_ADD("pia3", PIA6821, 0) + MCFG_PIA_WRITEPA_HANDLER(WRITE8(spiders_state, spiders_audio_ctrl_w)) + MCFG_PIA_WRITEPB_HANDLER(WRITE8(spiders_state, spiders_audio_command_w)) + MCFG_PIA_IRQA_HANDLER(WRITELINE(spiders_state,main_cpu_irq)) + MCFG_PIA_IRQB_HANDLER(WRITELINE(spiders_state,main_cpu_irq)) + + MCFG_DEVICE_ADD("pia4", PIA6821, 0) + MCFG_PIA_WRITEPA_HANDLER(WRITE8(spiders_state, spiders_audio_a_w)) + MCFG_PIA_WRITEPB_HANDLER(WRITE8(spiders_state, spiders_audio_b_w)) + MCFG_PIA_IRQA_HANDLER(WRITELINE(spiders_state, audio_cpu_irq)) + + MCFG_DEVICE_ADD("ic60", TTL74123, 0) + MCFG_TTL74123_CONNECTION_TYPE(TTL74123_GROUNDED) /* the hook up type */ + MCFG_TTL74123_RESISTOR_VALUE(RES_K(22)) /* resistor connected to RCext */ + MCFG_TTL74123_CAPACITOR_VALUE(CAP_U(0.01)) /* capacitor connected to Cext and RCext */ + MCFG_TTL74123_A_PIN_VALUE(1) /* A pin - driven by the CRTC */ + MCFG_TTL74123_B_PIN_VALUE(1) /* B pin - pulled high */ + MCFG_TTL74123_CLEAR_PIN_VALUE(1) /* Clear pin - pulled high */ + MCFG_TTL74123_OUTPUT_CHANGED_CB(WRITE8(spiders_state, ic60_74123_output_changed)) + + /* audio hardware */ + MCFG_FRAGMENT_ADD(spiders_audio) + +MACHINE_CONFIG_END + + + +/************************************* + * + * ROM definitions + * + *************************************/ + +ROM_START( spiders ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "sp-ic74", 0xc000, 0x1000, CRC(6a2578f6) SHA1(ddfe4fb2ccc925df7ae97821f8681b32e47630b4) ) + ROM_LOAD( "sp-ic73", 0xd000, 0x1000, CRC(d69b2f21) SHA1(ea2b07d19bd50c3b57da8fd8e13b8ab0e8ca3084) ) + ROM_LOAD( "sp-ic72", 0xe000, 0x1000, CRC(464125da) SHA1(94e9edd52e8bd72bbb5dc91b0aa11955e940799c) ) + ROM_LOAD( "sp-ic71", 0xf000, 0x1000, CRC(a9539b18) SHA1(2d02343a78a4a65e5a1798552cd015f16ad5423a) ) + + ROM_REGION( 0x10000, "audiocpu", 0 ) + ROM_LOAD( "sp-ic3", 0xf800, 0x0800, CRC(944d761e) SHA1(23b1f9234e0de678e96d1a6876d8d0a341150385) ) + + ROM_REGION( 0x10000, "gfx1", 0 ) + ROM_LOAD( "sp-ic33", 0x0000, 0x1000, CRC(b6731baa) SHA1(b551030df417b40f4a8488fc82a8b5809d3d32f6) ) + ROM_LOAD( "sp-ic25", 0x1000, 0x1000, CRC(baec64e7) SHA1(beb45e2e6270607c14cdf964c08fe320ce8236a0) ) + ROM_LOAD( "sp-ic24", 0x2000, 0x1000, CRC(a40a5517) SHA1(3f524c7dbbfe8aad7860d15c38d2702732895681) ) + ROM_LOAD( "sp-ic23", 0x3000, 0x1000, CRC(3ca08053) SHA1(20c5709d9650c426b91aed5318a9ab0a10009f17) ) + ROM_LOAD( "sp-ic22", 0x4000, 0x1000, CRC(07ea073c) SHA1(2e57831092730db5fbdb97c2d78d8842868906f4) ) + ROM_LOAD( "sp-ic21", 0x5000, 0x1000, CRC(41b344b4) SHA1(c0eac1e332da1eada062059ae742b666051da76c) ) + ROM_LOAD( "sp-ic20", 0x6000, 0x1000, CRC(4d37da5a) SHA1(37567d19596506385e9dcc7a7c0cf65120189ae0) ) +ROM_END + + +ROM_START( spiders2 ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "sp-ic74", 0xc000, 0x1000, CRC(6a2578f6) SHA1(ddfe4fb2ccc925df7ae97821f8681b32e47630b4) ) + ROM_LOAD( "sp2.bin", 0xd000, 0x1000, CRC(cf71d12b) SHA1(369e91f637e8cd898354ddee04e24d4894968f79) ) + ROM_LOAD( "sp-ic72", 0xe000, 0x1000, CRC(464125da) SHA1(94e9edd52e8bd72bbb5dc91b0aa11955e940799c) ) + ROM_LOAD( "sp4.bin", 0xf000, 0x1000, CRC(f3d126bb) SHA1(ecc9156a7da661fa7543d7656aa7da77274e0842) ) + + ROM_REGION( 0x10000, "audiocpu", 0 ) + ROM_LOAD( "sp-ic3", 0xf800, 0x0800, CRC(944d761e) SHA1(23b1f9234e0de678e96d1a6876d8d0a341150385) ) + + ROM_REGION( 0x10000, "gfx1", 0 ) + ROM_LOAD( "sp-ic33", 0x0000, 0x1000, CRC(b6731baa) SHA1(b551030df417b40f4a8488fc82a8b5809d3d32f6) ) + ROM_LOAD( "sp-ic25", 0x1000, 0x1000, CRC(baec64e7) SHA1(beb45e2e6270607c14cdf964c08fe320ce8236a0) ) + ROM_LOAD( "sp-ic24", 0x2000, 0x1000, CRC(a40a5517) SHA1(3f524c7dbbfe8aad7860d15c38d2702732895681) ) + ROM_LOAD( "sp-ic23", 0x3000, 0x1000, CRC(3ca08053) SHA1(20c5709d9650c426b91aed5318a9ab0a10009f17) ) + ROM_LOAD( "sp-ic22", 0x4000, 0x1000, CRC(07ea073c) SHA1(2e57831092730db5fbdb97c2d78d8842868906f4) ) + ROM_LOAD( "sp-ic21", 0x5000, 0x1000, CRC(41b344b4) SHA1(c0eac1e332da1eada062059ae742b666051da76c) ) + ROM_LOAD( "sp-ic20", 0x6000, 0x1000, CRC(4d37da5a) SHA1(37567d19596506385e9dcc7a7c0cf65120189ae0) ) +ROM_END + + +ROM_START( spinner ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "sp01-100.r1", 0xc000, 0x1000, CRC(e85faa36) SHA1(ef1c479d503ef6a833ae1f9d5a260f9e50c1f2d4) ) + ROM_LOAD( "sp02-99.s1", 0xd000, 0x1000, CRC(4bcd2b35) SHA1(dff3c6e68cc5384863a123661422d929e7406dee) ) + ROM_LOAD( "sp03-98.t1", 0xe000, 0x1000, CRC(fdabc5df) SHA1(a3276eb1f09f6a3c406721f89993a39c92fb7728) ) + ROM_LOAD( "sp04-97.v1", 0xf000, 0x1000, CRC(62798f96) SHA1(1407a2ccb2b8f998f2ee494f52a471b627895dbe) ) + + ROM_REGION( 0x10000, "audiocpu", 0 ) + ROM_LOAD( "sp41-28.d9", 0xf800, 0x0800, CRC(944d761e) SHA1(23b1f9234e0de678e96d1a6876d8d0a341150385) ) + + ROM_REGION( 0x10000, "gfx1", 0 ) + ROM_LOAD( "sp05-25.k8", 0x0000, 0x1000, CRC(ccc696ee) SHA1(1d41e9eb0cae73b221327d7b6e02450275d056c6) ) + ROM_LOAD( "sp06-17.k9", 0x1000, 0x1000, CRC(d3d06722) SHA1(da510ed162e5c310945123c9ce6d5648c7b0ae48) ) + ROM_LOAD( "sp07-16.l9", 0x2000, 0x1000, CRC(a40a5517) SHA1(3f524c7dbbfe8aad7860d15c38d2702732895681) ) + ROM_LOAD( "sp08-15.n9", 0x3000, 0x1000, CRC(3ca08053) SHA1(20c5709d9650c426b91aed5318a9ab0a10009f17) ) + ROM_LOAD( "sp09-14.o9", 0x4000, 0x1000, CRC(07ea073c) SHA1(2e57831092730db5fbdb97c2d78d8842868906f4) ) + ROM_LOAD( "sp10-13.q9", 0x5000, 0x1000, CRC(41b344b4) SHA1(c0eac1e332da1eada062059ae742b666051da76c) ) + ROM_LOAD( "sp11-12.r9", 0x6000, 0x1000, CRC(4d37da5a) SHA1(37567d19596506385e9dcc7a7c0cf65120189ae0) ) +ROM_END + +ROM_START( spiders3 ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "sp-ic74.bin", 0xc000, 0x1000, CRC(ed6b5dcd) SHA1(551fecb9adbab5cb5ac07fb27cc1fcfa03b5e832) ) + ROM_LOAD( "sp-ic73.bin", 0xd000, 0x1000, CRC(bc04f779) SHA1(a6366461a120d978b27470dad34a2270aee71428) ) + ROM_LOAD( "sp-ic72.bin", 0xe000, 0x1000, CRC(c7dd097d) SHA1(c7802ac33c1a67ffcb1891e74f0e43483f5b1016) ) + ROM_LOAD( "sp-ic71.bin", 0xf000, 0x1000, CRC(593b43c4) SHA1(f0cf06a22be205f00a9d52f766c3aae1985f0090) ) + + ROM_REGION( 0x10000, "audiocpu", 0 ) + ROM_LOAD( "sp-ic3.bin", 0xf800, 0x0800, CRC(153adee7) SHA1(45dbd756adb5d75562b066fc152c0af7925052de) ) + + ROM_REGION( 0x10000, "gfx1", 0 ) + ROM_LOAD( "sp-ic33.bin", 0x0000, 0x1000, CRC(7209dacd) SHA1(142de81c013f4074a8eaedc5cd7e9498e6910eb9) ) + ROM_LOAD( "sp-ic25.bin", 0x1000, 0x1000, CRC(d3d06722) SHA1(da510ed162e5c310945123c9ce6d5648c7b0ae48) ) + ROM_LOAD( "sp-ic24", 0x2000, 0x1000, CRC(a40a5517) SHA1(3f524c7dbbfe8aad7860d15c38d2702732895681) ) + ROM_LOAD( "sp-ic23", 0x3000, 0x1000, CRC(3ca08053) SHA1(20c5709d9650c426b91aed5318a9ab0a10009f17) ) + ROM_LOAD( "sp-ic22", 0x4000, 0x1000, CRC(07ea073c) SHA1(2e57831092730db5fbdb97c2d78d8842868906f4) ) + ROM_LOAD( "sp-ic21", 0x5000, 0x1000, CRC(41b344b4) SHA1(c0eac1e332da1eada062059ae742b666051da76c) ) + ROM_LOAD( "sp-ic20", 0x6000, 0x1000, CRC(4d37da5a) SHA1(37567d19596506385e9dcc7a7c0cf65120189ae0) ) +ROM_END + + +/************************************* + * + * Game drivers + * + *************************************/ + +/* this is a newer version with just one bug fix */ +GAME( 1981, spiders, 0, spiders, spiders, driver_device, 0, ROT270, "Sigma Enterprises Inc.", "Spiders (set 1)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) +GAME( 1981, spiders2, spiders, spiders, spiders, driver_device, 0, ROT270, "Sigma Enterprises Inc.", "Spiders (set 2)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) +GAME( 1981, spiders3, spiders, spiders, spiders, driver_device, 0, ROT270, "Sigma Enterprises Inc.", "Spiders (set 3)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) +GAME( 1981, spinner, spiders, spiders, spiders, driver_device, 0, ROT270, "bootleg", "Spinner", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) |