/*************************************************************************** Atari Avalanche hardware driver by Mike Balfour Games supported: * Avalanche Known issues: * none at this time **************************************************************************** Memory Map: 0000-1FFF RAM 2000-2FFF R INPUTS 3000-3FFF W WATCHDOG 4000-4FFF W OUTPUTS 5000-5FFF W SOUND LEVEL 6000-7FFF R PROGRAM ROM 8000-DFFF UNUSED E000-FFFF PROGRAM ROM (Remapped) If you have any questions about how this driver works, don't hesitate to ask. - Mike Balfour (mab22@po.cwru.edu) ***************************************************************************/ #include "driver.h" #include "sound/discrete.h" #include "avalnche.h" #include "avalnche.lh" /************************************* * * Interrupt generation * *************************************/ static INTERRUPT_GEN( avalnche_interrupt ) { cpunum_set_input_line(0, INPUT_LINE_NMI, PULSE_LINE); } /************************************* * * Video system * *************************************/ static UINT8 avalance_video_inverted; static VIDEO_UPDATE( avalnche ) { offs_t offs; for (offs = 0; offs < videoram_size; offs++) { int i; UINT8 x = offs << 3; int y = offs >> 5; UINT8 data = videoram[offs]; for (i = 0; i < 8; i++) { pen_t pen; if (avalance_video_inverted) pen = (data & 0x80) ? RGB_WHITE : RGB_BLACK; else pen = (data & 0x80) ? RGB_BLACK : RGB_WHITE; *BITMAP_ADDR32(bitmap, y, x) = pen; data = data << 1; x = x + 1; } } return 0; } static WRITE8_HANDLER( avalance_video_invert_w ) { avalance_video_inverted = data & 0x01; } /************************************* * * Lamp handling * *************************************/ static WRITE8_HANDLER( avalance_credit_1_lamp_w ) { set_led_status(0, data & 0x01); } static WRITE8_HANDLER( avalance_credit_2_lamp_w ) { set_led_status(1, data & 0x01); } static WRITE8_HANDLER( avalance_start_lamp_w ) { set_led_status(2, data & 0x01); } /************************************* * * Main CPU memory handlers * *************************************/ static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 ) ADDRESS_MAP_FLAGS( AMEF_ABITS(15) ) AM_RANGE(0x0000, 0x1fff) AM_RAM AM_BASE(&videoram) AM_SIZE(&videoram_size) AM_RANGE(0x2000, 0x2000) AM_MIRROR(0x0ffc) AM_READ(input_port_0_r) AM_RANGE(0x2001, 0x2001) AM_MIRROR(0x0ffc) AM_READ(input_port_1_r) AM_RANGE(0x2002, 0x2002) AM_MIRROR(0x0ffc) AM_READ(input_port_2_r) AM_RANGE(0x2003, 0x2003) AM_MIRROR(0x0ffc) AM_READ(MRA8_NOP) AM_RANGE(0x3000, 0x3000) AM_MIRROR(0x0fff) AM_WRITE(watchdog_reset_w) AM_RANGE(0x4000, 0x4000) AM_MIRROR(0x0ff8) AM_WRITE(avalance_credit_1_lamp_w) AM_RANGE(0x4001, 0x4001) AM_MIRROR(0x0ff8) AM_WRITE(avalnche_attract_enable_w) AM_RANGE(0x4002, 0x4002) AM_MIRROR(0x0ff8) AM_WRITE(avalance_video_invert_w) AM_RANGE(0x4003, 0x4003) AM_MIRROR(0x0ff8) AM_WRITE(avalance_credit_2_lamp_w) AM_RANGE(0x4004, 0x4006) AM_MIRROR(0x0ff8) AM_WRITE(avalnche_audio_w) AM_RANGE(0x4007, 0x4007) AM_MIRROR(0x0ff8) AM_WRITE(avalance_start_lamp_w) AM_RANGE(0x5000, 0x5000) AM_MIRROR(0x0fff) AM_WRITE(avalnche_noise_amplitude_w) AM_RANGE(0x6000, 0x7fff) AM_ROM ADDRESS_MAP_END /************************************* * * Port definitions * *************************************/ static INPUT_PORTS_START( avalnche ) PORT_START_TAG("IN0") PORT_BIT (0x03, IP_ACTIVE_HIGH, IPT_UNKNOWN ) /* Spare */ PORT_DIPNAME( 0x0c, 0x04, DEF_STR( Coinage ) ) PORT_DIPSETTING( 0x08, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x04, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x0c, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) ) PORT_DIPNAME( 0x30, 0x00, DEF_STR( Language ) ) PORT_DIPSETTING( 0x00, DEF_STR( English ) ) PORT_DIPSETTING( 0x30, DEF_STR( German ) ) PORT_DIPSETTING( 0x20, DEF_STR( French ) ) PORT_DIPSETTING( 0x10, DEF_STR( Spanish ) ) PORT_BIT (0x40, IP_ACTIVE_HIGH, IPT_START2 ) PORT_BIT (0x80, IP_ACTIVE_HIGH, IPT_START1 ) PORT_START_TAG("IN1") PORT_BIT ( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_BIT ( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 ) PORT_DIPNAME( 0x04, 0x04, "Allow Extended Play" ) PORT_DIPSETTING( 0x00, DEF_STR( No ) ) PORT_DIPSETTING( 0x04, DEF_STR( Yes ) ) PORT_DIPNAME( 0x08, 0x00, "Lives/Extended Play" ) PORT_DIPSETTING( 0x00, "3/450 points" ) PORT_DIPSETTING( 0x08, "5/750 points" ) PORT_BIT ( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* SLAM */ PORT_SERVICE( 0x20, IP_ACTIVE_HIGH) PORT_BIT ( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON1 ) /* Serve */ PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK ) /* VBLANK */ PORT_START_TAG("IN2") PORT_BIT( 0xff, 0x80, IPT_PADDLE ) PORT_MINMAX(0x40,0xb7) PORT_SENSITIVITY(50) PORT_KEYDELTA(10) PORT_CENTERDELTA(0) INPUT_PORTS_END static INPUT_PORTS_START( cascade ) PORT_START_TAG("IN0") PORT_BIT (0x03, IP_ACTIVE_HIGH, IPT_UNKNOWN ) /* Spare */ PORT_DIPNAME( 0x0c, 0x04, DEF_STR( Coinage ) ) PORT_DIPSETTING( 0x08, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x04, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x0c, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) ) PORT_DIPNAME( 0x30, 0x00, DEF_STR( Language ) ) PORT_DIPSETTING( 0x00, DEF_STR( English ) ) PORT_DIPSETTING( 0x30, DEF_STR( German ) ) PORT_DIPSETTING( 0x20, DEF_STR( French ) ) PORT_DIPSETTING( 0x10, DEF_STR( Italian ) ) PORT_BIT (0x40, IP_ACTIVE_HIGH, IPT_START2 ) PORT_BIT (0x80, IP_ACTIVE_HIGH, IPT_START1 ) PORT_START_TAG("IN1") PORT_BIT ( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_BIT ( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 ) PORT_DIPNAME( 0x04, 0x04, "Allow Extended Play" ) PORT_DIPSETTING( 0x00, DEF_STR( No ) ) PORT_DIPSETTING( 0x04, DEF_STR( Yes ) ) PORT_DIPNAME( 0x08, 0x00, "Extended Play" ) PORT_DIPSETTING( 0x00, "1500 points" ) PORT_DIPSETTING( 0x08, "2500 points" ) PORT_BIT ( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* SLAM */ PORT_SERVICE( 0x20, IP_ACTIVE_HIGH) PORT_BIT ( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON1 ) /* Serve */ PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK ) /* VBLANK */ PORT_START_TAG("IN2") PORT_BIT( 0xff, 0x80, IPT_PADDLE ) PORT_MINMAX(0x40,0xb7) PORT_SENSITIVITY(50) PORT_KEYDELTA(10) PORT_CENTERDELTA(0) INPUT_PORTS_END /************************************* * * Machine driver * *************************************/ static MACHINE_DRIVER_START( avalnche ) /* basic machine hardware */ MDRV_CPU_ADD(M6502,12096000/16) /* clock input is the "2H" signal divided by two */ MDRV_CPU_PROGRAM_MAP(main_map,0) MDRV_CPU_VBLANK_INT(avalnche_interrupt,8) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(DEFAULT_REAL_60HZ_VBLANK_DURATION) /* video hardware */ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) MDRV_VIDEO_UPDATE(avalnche) MDRV_SCREEN_ADD("main", 0) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32) MDRV_SCREEN_SIZE(32*8, 32*8) MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 32*8-1) /* sound hardware */ MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD(DISCRETE, 0) MDRV_SOUND_CONFIG_DISCRETE(avalnche) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_DRIVER_END /************************************* * * ROM definitions * *************************************/ ROM_START( avalnche ) ROM_REGION( 0x8000, REGION_CPU1, 0 ) ROM_LOAD_NIB_HIGH( "30612.d2", 0x6800, 0x0800, CRC(3f975171) SHA1(afe680865da97824f1ebade4c7a2ba5d7ee2cbab) ) ROM_LOAD_NIB_LOW ( "30615.d3", 0x6800, 0x0800, CRC(3e1a86b4) SHA1(3ff4cffea5b7a32231c0996473158f24c3bbe107) ) ROM_LOAD_NIB_HIGH( "30613.e2", 0x7000, 0x0800, CRC(47a224d3) SHA1(9feb7444a2e5a3d90a4fe78ae5d23c3a5039bfaa) ) ROM_LOAD_NIB_LOW ( "30616.e3", 0x7000, 0x0800, CRC(f620f0f8) SHA1(7802b399b3469fc840796c3145b5f63781090956) ) ROM_LOAD_NIB_HIGH( "30611.c2", 0x7800, 0x0800, CRC(0ad07f85) SHA1(5a1a873b14e63dbb69ee3686ba53f7ca831fe9d0) ) ROM_LOAD_NIB_LOW ( "30614.c3", 0x7800, 0x0800, CRC(a12d5d64) SHA1(1647d7416bf9266d07f066d3797bda943e004d24) ) ROM_END ROM_START( cascade ) ROM_REGION( 0x8000, REGION_CPU1, 0 ) ROM_LOAD( "10005.1a", 0x6800, 0x0400, CRC(54774594) SHA1(03e013b563675fb8a30bd69836466a353db9bfc7) ) ROM_LOAD( "10005.1b", 0x6c00, 0x0400, CRC(fd9575ad) SHA1(ed0a1343d3c0456d458561256d5ee966b6c213f4) ) ROM_LOAD( "10005.2a", 0x7000, 0x0400, CRC(12857c75) SHA1(e42fdee70bd19d6f60e88f106a49dbbd68c591cd) ) ROM_LOAD( "10005.2b", 0x7400, 0x0400, CRC(26361698) SHA1(587cc6f0dc068a74aac41c2cb3336d70d2dd91e5) ) ROM_LOAD( "10005.3a", 0x7800, 0x0400, CRC(d1f422ff) SHA1(65ecbf0a22ba340d6a1768ed029030bac9c19e0f) ) ROM_LOAD( "10005.3b", 0x7c00, 0x0400, CRC(bb243d96) SHA1(3a387a8c50cd9b0db37d12b94dc9e260892dbf21) ) ROM_END /************************************* * * Game drivers * *************************************/ GAMEL( 1978, avalnche, 0, avalnche, avalnche, 0, ROT0, "Atari", "Avalanche", 0, layout_avalnche ) GAMEL( 1978, cascade, avalnche, avalnche, cascade, 0, ROT0, "Sidam", "Cascade", 0, layout_avalnche )