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+/***************************************************************************
+
+ Beast Busters A9003 (c) 1989 SNK Corporation
+ Mechanized Attack A8002 (c) 1989 SNK Corporation
+
+ Beast Busters is a large dedicated (non-jamma) triple machine gun game,
+ the gun positions values are read in an interrupt routine that must be
+ called for each position (X and Y for 3 guns, so at least 6 times a
+ frame). However I can't make it work reliably.. So for the moment
+ I'm writing the gun positions directly to memory and bypassing
+ the IRQ routine.
+
+ Mechanized Attack (A8002) is an earlier design, it only has one sprite
+ chip, no eeprom, and only 2 machine guns, but the tilemaps are twice
+ the size.
+
+ Emulation by Bryan McPhail, mish@tendril.co.uk
+
+
+Stephh's notes (based on the games M68000 code and some tests) :
+
+1) 'bbusters'
+
+ - Country/version is stored at 0x003954.w and the possible values are
+ 0x0000, 0x0004 and 0x0008 (0x000c being the same as 0x0008), 0x0008
+ being the value stored in ROM in the current set.
+ I haven't noticed any major effect (copyright/logo, language, coinage),
+ the only thing I found is that the text relative to number of coins
+ needed is different (but it's a lie as coinage is NOT modified).
+ So my guess is that if other versions exist, part of the code (or at
+ least data in it) will have to be different.
+ Anyway, here is my guess to determine the versions (by using some infos
+ from 'mechatt' :
+
+ Value Country
+ 0x0000 Japan
+ 0x0004 US?
+ 0x0008 World? (value stored in the current set)
+ 0x000c World? (same as 0x0008 - impossible choice ?)
+
+ - Coin buttons act differently depending on the "Coin Slots" Dip Switch :
+
+ * "Coin Slots" Dip Switch set to "Common" :
+
+ . COIN1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) depending on "Coin B" Dip Switch
+ . COIN3 : NO EFFECT !
+ . COIN4 : NO EFFECT !
+ . COIN5 : NO EFFECT !
+ . COIN6 : NO EFFECT !
+ . SERVICE1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+
+ * "Coin Slots" Dip Switch set to "Individual" :
+
+ . COIN1 : adds coin(s)/credit(s) for player 1 depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) for player 1 depending on "Coin B" Dip Switch
+ . COIN3 : adds coin(s)/credit(s) for player 2 depending on "Coin A" Dip Switch
+ . COIN4 : adds coin(s)/credit(s) for player 2 depending on "Coin B" Dip Switch
+ . COIN5 : adds coin(s)/credit(s) for player 3 depending on "Coin A" Dip Switch
+ . COIN6 : adds coin(s)/credit(s) for player 3 depending on "Coin B" Dip Switch
+ . SERVICE1 : adds coin(s)/credit(s) for all players depending on "Coin A" Dip Switch
+
+ Note that I had to map COIN5 and COIN6 to SERVICE2 and SERVICE3 to be
+ able to use the default parametrable keys. Let me know if there is a
+ another (better ?) way to do so.
+
+
+2) 'mechatt'
+
+ - Country/version is stored at 0x06a000.w and the possible values are :
+
+ Value Country
+ 0x0000 Japan
+ 0x1111 World (value stored in the current set)
+ 0x2222 US
+ 0x3333 Asia? (it looks like Japanese text but some "symbols" are missing)
+
+2a) Japan version
+
+ - All texts are in Japanese.
+ - "(c) 1989 (Corp) S-N-K".
+ - "Coin Slots" Dip Switch has no effect.
+ - "Coin A" and "Coin B" Dip Switches are the same as in the World version.
+ - Coin buttons effect :
+
+ * "Coin Slots" are ALWAYS considered as "Common" :
+
+ . COIN1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) depending on "Coin B" Dip Switch
+ . COIN3 : NO EFFECT !
+ . COIN4 : NO EFFECT !
+ . SERVICE1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+
+2b) World version
+
+ - All texts are in English.
+ - "(c) 1989 SNK Corporation".
+ - Coin buttons effect :
+
+ * "Coin Slots" Dip Switch set to "Common" :
+
+ . COIN1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) depending on "Coin B" Dip Switch
+ . COIN3 : NO EFFECT !
+ . COIN4 : NO EFFECT !
+ . SERVICE1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+
+ * "Coin Slots" Dip Switch set to "Individual" :
+
+ . COIN1 : adds coin(s)/credit(s) for player 1 depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) for player 1 depending on "Coin B" Dip Switch
+ . COIN3 : adds coin(s)/credit(s) for player 2 depending on "Coin A" Dip Switch
+ . COIN4 : adds coin(s)/credit(s) for player 2 depending on "Coin B" Dip Switch
+ . SERVICE1 : adds coin(s)/credit(s) for all players depending on "Coin A" Dip Switch
+
+2c) US version
+
+ - All texts are in English.
+ - "(c) 1989 SNK Corp. of America".
+ - Additional FBI logo as first screen as well as small FBI notice at the bottom left
+ of the screens until a coin is inserted.
+ - "Coin Slots" Dip Switch has no effect.
+ - "Coin A" Dip Switch is different from the World version :
+
+ World US
+ 4C_1C "Free Play"
+ 3C_1C special (see below)
+ 2C_1C "2 Coins to Start, 1 to Continue"
+ 1C_1C 1C_1C
+
+ It's a bit hard to explain the "special" coinage, so here are some infos :
+
+ * when you insert a coin before starting a game, you are awarded 2 credits
+ if credits == 0, else you are awarded 1 credit
+ * when you insert a coin to continue, you are ALWAYS awarded 1 credit
+
+ - "Coin B" Dip Switch has no effect.
+
+ - Coin buttons effect :
+
+ * "Coin Slots" are ALWAYS considered as "Individual" :
+
+ . COIN1 : adds coin(s)/credit(s) for player 1 depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) for player 2 depending on "Coin A" Dip Switch
+ . COIN3 : NO EFFECT !
+ . COIN4 : NO EFFECT !
+ . SERVICE1 : adds coin(s)/credit(s) for all players depending on "Coin A" Dip Switch
+
+2d) Asia? version
+
+ - All texts are in Japanese ? (to be confirmed)
+ - "(c) 1989 SNK Corporation".
+ - "Coin Slots" Dip Switch has no effect.
+ - "Coin A" and "Coin B" Dip Switches are the same as in the World version.
+ - Coin buttons effect :
+
+ * "Coin Slots" are ALWAYS considered as "Common" :
+
+ . COIN1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+ . COIN2 : adds coin(s)/credit(s) depending on "Coin B" Dip Switch
+ . COIN3 : NO EFFECT !
+ . COIN4 : NO EFFECT !
+ . SERVICE1 : adds coin(s)/credit(s) depending on "Coin A" Dip Switch
+
+
+
+HIGHWAYMAN's notes:
+
+after adding the mechanized attack u.s. roms i suspect that there is more than just a few bytes changed ;-)
+
+
+RansAckeR's notes:
+
+bbusters:
+
+If you only calibrate the P1 gun or do not hit the correct spots for all guns
+you will get either garbage or a black screen when rebooting.
+According to the manual this happens when the eprom contains invalid gun aim data.
+
+If you calibrate the guns correctly the game runs as expected:
+1) Using P1 controls fire at the indicated spots.
+2) Using P2 controls fire at the indicated spots.
+3) Using P3 controls fire at the indicated spots.
+
+---
+
+Beast Busters notes (from Brian Hargrove)
+
+1. Stage 2 for example, has background sprites and enemies that float on the
+foreground and not behind the moving elevator layer.
+
+2. Oddly enough, the emulation completely misses the huge zombie that jumps
+out during the attract demo right before the text story text comes in.
+When you hear the the high pitch "zing" sound, there should be a zombie nearly
+the entire size of the screen.
+
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "cpu/m68000/m68000.h"
+#include "sound/2608intf.h"
+#include "sound/2610intf.h"
+#include "includes/bbusters.h"
+#include "machine/nvram.h"
+
+
+/******************************************************************************/
+
+
+/* Beast Busters Region code works as follows
+
+ROM[0x003954/2] = data * 4;
+
+Country/Version :
+
+ - 0x0000 : Japan?
+ - 0x0004 : US?
+ - 0x0008 : World? (default)
+ - 0x000c : World? (same as 0x0008)
+
+*/
+
+/* Mech Attack Region code works as follows
+
+ROM[0x06a000/2] = (data << 12) | (data << 8) | (data << 4) | (data << 0);
+
+Country :
+- 0x0000 : Japan
+- 0x1111 : World (default)
+- 0x2222 : US
+- 0x3333 : Asia?
+
+*/
+
+
+/******************************************************************************/
+
+static READ16_HANDLER( sound_status_r )
+{
+ bbusters_state *state = space->machine().driver_data<bbusters_state>();
+
+ return state->m_sound_status;
+}
+
+static WRITE8_HANDLER( sound_status_w )
+{
+ bbusters_state *state = space->machine().driver_data<bbusters_state>();
+
+ state->m_sound_status = data;
+}
+
+static WRITE16_HANDLER( sound_cpu_w )
+{
+ if (ACCESSING_BITS_0_7)
+ {
+ soundlatch_w(space, 0, data&0xff);
+ cputag_set_input_line(space->machine(), "audiocpu", INPUT_LINE_NMI, PULSE_LINE);
+ }
+}
+
+/* Eprom is byte wide, top half of word _must_ be 0xff */
+static READ16_HANDLER( eprom_r )
+{
+ bbusters_state *state = space->machine().driver_data<bbusters_state>();
+
+ return (state->m_eprom_data[offset]&0xff) | 0xff00;
+}
+
+static READ16_HANDLER( control_3_r )
+{
+ bbusters_state *state = space->machine().driver_data<bbusters_state>();
+ static const char *const port[] = { "GUNX1", "GUNY1", "GUNX2", "GUNY2", "GUNX3", "GUNY3" };
+
+ UINT16 retdata = input_port_read(space->machine(), port[state->m_gun_select]);
+
+ retdata >>=1; // by lowering the precision of the gun reading hardware the game seems to work better
+
+ return retdata;
+}
+
+static WRITE16_HANDLER( gun_select_w )
+{
+ bbusters_state *state = space->machine().driver_data<bbusters_state>();
+
+ logerror("%08x: gun r\n",cpu_get_pc(&space->device()));
+
+ device_set_input_line(&space->device(), 2, HOLD_LINE);
+
+ state->m_gun_select = data & 0xff;
+}
+
+static WRITE16_HANDLER( two_gun_output_w )
+{
+ output_set_value("Player1_Gun_Recoil",(data & 0x01));
+ output_set_value("Player2_Gun_Recoil",(data & 0x02)>>1);
+}
+
+static WRITE16_HANDLER( three_gun_output_w )
+{
+ output_set_value("Player1_Gun_Recoil",(data & 0x01));
+ output_set_value("Player2_Gun_Recoil",(data & 0x02)>>1);
+ output_set_value("Player3_Gun_Recoil",(data & 0x04)>>2);
+}
+
+static READ16_HANDLER( kludge_r )
+{
+ // might latch the gun value?
+ return 0x0000;
+}
+
+static READ16_HANDLER( mechatt_gun_r )
+{
+ int x, y;
+
+ x = input_port_read(space->machine(), offset ? "GUNX2" : "GUNX1");
+ y = input_port_read(space->machine(), offset ? "GUNY2" : "GUNY1");
+
+ /* Todo - does the hardware really clamp like this? */
+ x += 0x18;
+ if (x > 0xff) x = 0xff;
+ if (y > 0xef) y = 0xef;
+
+ return x | (y<<8);
+}
+
+/*******************************************************************************/
+
+static ADDRESS_MAP_START( bbusters_map, AS_PROGRAM, 16 )
+ AM_RANGE(0x000000, 0x07ffff) AM_ROM
+ AM_RANGE(0x080000, 0x08ffff) AM_RAM AM_BASE_MEMBER(bbusters_state, m_ram)
+ AM_RANGE(0x090000, 0x090fff) AM_RAM_WRITE(bbusters_video_w) AM_BASE_MEMBER(bbusters_state, m_videoram)
+ AM_RANGE(0x0a0000, 0x0a0fff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram)
+ AM_RANGE(0x0a1000, 0x0a7fff) AM_RAM /* service mode */
+ AM_RANGE(0x0a8000, 0x0a8fff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram2)
+ AM_RANGE(0x0a9000, 0x0affff) AM_RAM /* service mode */
+ AM_RANGE(0x0b0000, 0x0b1fff) AM_RAM_WRITE(bbusters_pf1_w) AM_BASE_MEMBER(bbusters_state, m_pf1_data)
+ AM_RANGE(0x0b2000, 0x0b3fff) AM_RAM_WRITE(bbusters_pf2_w) AM_BASE_MEMBER(bbusters_state, m_pf2_data)
+ AM_RANGE(0x0b4000, 0x0b5fff) AM_RAM /* service mode */
+ AM_RANGE(0x0b8000, 0x0b8003) AM_WRITEONLY AM_BASE_MEMBER(bbusters_state, m_pf1_scroll_data)
+ AM_RANGE(0x0b8008, 0x0b800b) AM_WRITEONLY AM_BASE_MEMBER(bbusters_state, m_pf2_scroll_data)
+ AM_RANGE(0x0d0000, 0x0d0fff) AM_RAM_WRITE(paletteram16_RRRRGGGGBBBBxxxx_word_w) AM_BASE_GENERIC(paletteram)
+ AM_RANGE(0x0e0000, 0x0e0001) AM_READ_PORT("COINS") /* Coins */
+ AM_RANGE(0x0e0002, 0x0e0003) AM_READ_PORT("IN0") /* Player 1 & 2 */
+ AM_RANGE(0x0e0004, 0x0e0005) AM_READ_PORT("IN1") /* Player 3 */
+ AM_RANGE(0x0e0008, 0x0e0009) AM_READ_PORT("DSW1") /* Dip 1 */
+ AM_RANGE(0x0e000a, 0x0e000b) AM_READ_PORT("DSW2") /* Dip 2 */
+ AM_RANGE(0x0e0018, 0x0e0019) AM_READ(sound_status_r)
+ AM_RANGE(0x0e8000, 0x0e8001) AM_READWRITE(kludge_r, gun_select_w)
+ AM_RANGE(0x0e8002, 0x0e8003) AM_READ(control_3_r)
+ /* AM_RANGE(0x0f0008, 0x0f0009) AM_WRITENOP */
+ AM_RANGE(0x0f0008, 0x0f0009) AM_WRITE(three_gun_output_w)
+ AM_RANGE(0x0f0018, 0x0f0019) AM_WRITE(sound_cpu_w)
+ AM_RANGE(0x0f8000, 0x0f80ff) AM_READ(eprom_r) AM_WRITEONLY AM_SHARE("eeprom") /* Eeprom */
+ADDRESS_MAP_END
+
+/*******************************************************************************/
+
+static ADDRESS_MAP_START( mechatt_map, AS_PROGRAM, 16 )
+ AM_RANGE(0x000000, 0x06ffff) AM_ROM
+ AM_RANGE(0x070000, 0x07ffff) AM_RAM AM_BASE_MEMBER(bbusters_state, m_ram)
+ AM_RANGE(0x090000, 0x090fff) AM_RAM_WRITE(bbusters_video_w) AM_BASE_MEMBER(bbusters_state, m_videoram)
+ AM_RANGE(0x0a0000, 0x0a0fff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram)
+ AM_RANGE(0x0a1000, 0x0a7fff) AM_WRITENOP
+ AM_RANGE(0x0b0000, 0x0b3fff) AM_RAM_WRITE(bbusters_pf1_w) AM_BASE_MEMBER(bbusters_state, m_pf1_data)
+ AM_RANGE(0x0b8000, 0x0b8003) AM_WRITEONLY AM_BASE_MEMBER(bbusters_state, m_pf1_scroll_data)
+ AM_RANGE(0x0c0000, 0x0c3fff) AM_RAM_WRITE(bbusters_pf2_w) AM_BASE_MEMBER(bbusters_state, m_pf2_data)
+ AM_RANGE(0x0c8000, 0x0c8003) AM_WRITEONLY AM_BASE_MEMBER(bbusters_state, m_pf2_scroll_data)
+ AM_RANGE(0x0d0000, 0x0d07ff) AM_RAM_WRITE(paletteram16_RRRRGGGGBBBBxxxx_word_w) AM_BASE_GENERIC(paletteram)
+ AM_RANGE(0x0e0000, 0x0e0001) AM_READ_PORT("IN0")
+ AM_RANGE(0x0e0002, 0x0e0003) AM_READ_PORT("DSW1")
+ AM_RANGE(0x0e0004, 0x0e0007) AM_READ(mechatt_gun_r)
+ /* AM_RANGE(0x0e4002, 0x0e4003) AM_WRITENOP Gun force feedback? */
+ AM_RANGE(0x0e4002, 0x0e4003) AM_WRITE(two_gun_output_w)
+ AM_RANGE(0x0e8000, 0x0e8001) AM_READWRITE(sound_status_r, sound_cpu_w)
+ADDRESS_MAP_END
+
+/******************************************************************************/
+
+static ADDRESS_MAP_START( sound_map, AS_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0xefff) AM_ROM
+ AM_RANGE(0xf000, 0xf7ff) AM_RAM
+ AM_RANGE(0xf800, 0xf800) AM_READWRITE(soundlatch_r, sound_status_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_portmap, AS_IO, 8 )
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("ymsnd", ym2610_r, ym2610_w)
+ AM_RANGE(0xc0, 0xc1) AM_WRITENOP /* -> Main CPU */
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sounda_portmap, AS_IO, 8 )
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("ymsnd", ym2608_r, ym2608_w)
+ AM_RANGE(0xc0, 0xc1) AM_WRITENOP /* -> Main CPU */
+ADDRESS_MAP_END
+
+/******************************************************************************/
+
+static INPUT_PORTS_START( bbusters )
+ PORT_START("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_NAME("P1 Fire") // "Fire"
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_NAME("P1 Grenade") // "Grenade"
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 Fire") // "Fire"
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 Grenade") // "Grenade"
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("IN1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START3 )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(3) PORT_NAME("P3 Fire") // "Fire"
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(3) PORT_NAME("P3 Grenade") // "Grenade"
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("COINS")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN4 )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN5 )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN6 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE1 ) // See notes
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("DSW1")
+ PORT_DIPNAME( 0x01, 0x01, DEF_STR( Allow_Continue ) ) PORT_DIPLOCATION("SW1:1")
+ PORT_DIPSETTING( 0x00, DEF_STR( No ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( Yes ) )
+ PORT_DIPNAME( 0x06, 0x06, "Magazine / Grenade" ) PORT_DIPLOCATION("SW1:2,3")
+ PORT_DIPSETTING( 0x04, "5 / 2" )
+ PORT_DIPSETTING( 0x06, "7 / 3" )
+ PORT_DIPSETTING( 0x02, "9 / 4" )
+ PORT_DIPSETTING( 0x00, "12 / 5" )
+ /* Manual (from a different revision/region?) says:
+ SW1:4 SW1:5 SW1:6
+ 1C_1C 1 To continue OFF OFF OFF
+ 2C_1C 1 To continue ON OFF OFF
+ 1C_2C 1 To continue OFF ON OFF
+ 2C_1C 2 To continue ON ON OFF
+ 3C_1C 1 To continue OFF OFF ON
+ 3C_1C 2 To continue ON OFF ON
+ 4C_3C 1 To continue OFF ON ON
+ Free Play Mode OFF OFF OFF
+
+ SW1:7 Unused
+ SW1:8 Blood color: ON=green OFF=red */
+ PORT_DIPNAME( 0x18, 0x18, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SW1:4,5")
+ PORT_DIPSETTING( 0x00, DEF_STR( 4C_1C ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( 3C_1C ) )
+ PORT_DIPSETTING( 0x10, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x18, DEF_STR( 1C_1C ) )
+ PORT_DIPNAME( 0x60, 0x60, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW1:6,7")
+ PORT_DIPSETTING( 0x60, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x20, DEF_STR( 1C_4C ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 1C_6C ) )
+ PORT_DIPNAME( 0x80, 0x80, "Coin Slots" ) PORT_DIPLOCATION("SW1:8") // See notes
+ PORT_DIPSETTING( 0x80, "Common" )
+ PORT_DIPSETTING( 0x00, "Individual" )
+
+ PORT_START("DSW2")
+ PORT_DIPNAME( 0x03, 0x03, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:1,2")
+ PORT_DIPSETTING( 0x02, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x03, DEF_STR( Normal ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( Hard ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( Hardest ) )
+ PORT_DIPNAME( 0x0c, 0x0c, "Game Mode" ) PORT_DIPLOCATION("SW2:3,4")
+ PORT_DIPSETTING( 0x08, "Demo Sounds Off" )
+ PORT_DIPSETTING( 0x0c, "Demo Sounds On" )
+ PORT_DIPSETTING( 0x04, "Infinite Energy (Cheat)")
+ PORT_DIPSETTING( 0x00, "Freeze" )
+ PORT_DIPUNUSED_DIPLOC( 0x10, 0x10, "SW2:5" ) /* Listed as "Unused" */
+ PORT_DIPUNUSED_DIPLOC( 0x20, 0x20, "SW2:6" ) /* Listed as "Unused" */
+ PORT_DIPUNUSED_DIPLOC( 0x40, 0x40, "SW2:7" ) /* Listed as "Unused" */
+ PORT_SERVICE_DIPLOC(0x80, IP_ACTIVE_LOW, "SW2:8" )
+
+ PORT_START("GUNX1")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(1)
+ PORT_START("GUNY1")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(1)
+
+ PORT_START("GUNX2")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(2)
+ PORT_START("GUNY2")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(2)
+
+ PORT_START("GUNX3")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(3)
+ PORT_START("GUNY3")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(3)
+INPUT_PORTS_END
+
+static INPUT_PORTS_START( mechatt )
+ PORT_START("IN0")
+ PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN1 )
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN2 )
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_SERVICE1 ) // See notes
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_COIN3 )
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_COIN4 )
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_NAME("P1 Fire") // "Fire"
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_NAME("P1 Grenade") // "Grenade"
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 Fire") // "Fire"
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 Grenade") // "Grenade"
+ PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("DSW1")
+ PORT_DIPNAME( 0x0001, 0x0001, "Coin Slots" ) PORT_DIPLOCATION("SW1:1") // Listed as "Unused" (manual from different revision/region?), See notes
+ PORT_DIPSETTING( 0x0001, "Common" )
+ PORT_DIPSETTING( 0x0000, "Individual" )
+ PORT_DIPNAME( 0x0002, 0x0002, DEF_STR( Allow_Continue ) ) PORT_DIPLOCATION("SW1:2")
+ PORT_DIPSETTING( 0x0000, DEF_STR( No ) )
+ PORT_DIPSETTING( 0x0002, DEF_STR( Yes ) )
+ PORT_DIPNAME( 0x000c, 0x000c, "Magazine / Grenade" ) PORT_DIPLOCATION("SW1:3,4")
+ PORT_DIPSETTING( 0x0008, "5 / 2" )
+ PORT_DIPSETTING( 0x000c, "6 / 3" )
+ PORT_DIPSETTING( 0x0004, "7 / 4" )
+ PORT_DIPSETTING( 0x0000, "8 / 5" )
+ PORT_DIPNAME( 0x0030, 0x0030, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SW1:5,6") // See notes
+ PORT_DIPSETTING( 0x0000, DEF_STR( 4C_1C ) )
+ PORT_DIPSETTING( 0x0010, DEF_STR( 3C_1C ) )
+ PORT_DIPSETTING( 0x0020, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x0030, DEF_STR( 1C_1C ) )
+ PORT_DIPNAME( 0x00c0, 0x00c0, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW1:7,8") // Listed as "Unused" (manual from different revision/region?), See notes
+ PORT_DIPSETTING( 0x00c0, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x0080, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x0040, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x0000, DEF_STR( 1C_4C ) )
+ PORT_DIPNAME( 0x0300, 0x0300, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:1,2")
+ PORT_DIPSETTING( 0x0200, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x0300, DEF_STR( Normal ) )
+ PORT_DIPSETTING( 0x0100, DEF_STR( Hard ) )
+ PORT_DIPSETTING( 0x0000, DEF_STR( Hardest ) )
+ PORT_DIPNAME( 0x0c00, 0x0c00, "Game Mode" ) PORT_DIPLOCATION("SW2:3,4")
+ PORT_DIPSETTING( 0x0800, "Demo Sounds Off" )
+ PORT_DIPSETTING( 0x0c00, "Demo Sounds On" )
+ PORT_DIPSETTING( 0x0400, "Infinite Energy (Cheat)")
+ PORT_DIPSETTING( 0x0000, "Freeze" )
+ PORT_DIPUNUSED_DIPLOC(0x1000, 0x1000, "SW2:5" ) /* Listed as "Unused" */
+ PORT_DIPUNUSED_DIPLOC(0x2000, 0x2000, "SW2:6" ) /* Listed as "Unused" */
+ PORT_DIPUNUSED_DIPLOC(0x4000, 0x4000, "SW2:7" ) /* Listed as "Unused" */
+ PORT_SERVICE_DIPLOC( 0x8000, IP_ACTIVE_LOW, "SW2:8" )
+
+ PORT_START("GUNX1")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(1)
+ PORT_START("GUNY1")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(1)
+
+ PORT_START("GUNX2")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(2)
+ PORT_START("GUNY2")
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(2)
+INPUT_PORTS_END
+
+static INPUT_PORTS_START( mechattu )
+ PORT_INCLUDE( mechatt )
+
+ PORT_MODIFY("DSW1")
+ PORT_DIPUNUSED_DIPLOC( 0x0001, 0x0001, "SW1:1" )
+ PORT_DIPNAME( 0x0030, 0x0030, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:5,6")
+ PORT_DIPSETTING( 0x0000, DEF_STR( Free_Play ) )
+ PORT_DIPSETTING( 0x0010, "1 Coin/2 Credits first, then 1 Coin/1 Credit" )
+ PORT_DIPSETTING( 0x0020, "2 Coins/1 Credit first, then 1 Coin/1 Credit" )
+ PORT_DIPSETTING( 0x0030, DEF_STR( 1C_1C ) )
+ PORT_DIPUNUSED_DIPLOC( 0x00c0, 0x00c0, "SW1:7,8" )
+INPUT_PORTS_END
+
+
+/******************************************************************************/
+
+static const gfx_layout charlayout =
+{
+ 8,8,
+ RGN_FRAC(1,1),
+ 4,
+ { 0, 1, 2, 3 },
+ { 0,4,8,12,16,20,24,28 },
+ { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
+ 32*8
+};
+
+static const gfx_layout spritelayout =
+{
+ 16,16,
+ RGN_FRAC(1,1),
+ 4,
+ { 8, 12, 0, 4 },
+ {
+ 0, 1, 2, 3,
+ 16,17,18,19,
+
+ 0+32*8, 1+32*8, 2+32*8, 3+32*8,
+ 16+32*8,17+32*8,18+32*8,19+32*8,
+ },
+ { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
+ 16*32, 17*32, 18*32, 19*32, 20*32, 21*32, 22*32, 23*32 },
+ 128*8
+};
+
+static const gfx_layout tilelayout =
+{
+ 16,16, /* 16*16 sprites */
+ RGN_FRAC(1,1),
+ 4, /* 4 bits per pixel */
+ { 0, 1, 2, 3 },
+ { 0, 4, 8, 12, 16, 20, 24, 28,
+ 0+64*8, 4+64*8, 8+64*8, 12+64*8,
+ 16+64*8,20+64*8,24+64*8,28+64*8,
+ },
+ { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
+ 8*32, 9*32, 10*32, 11*32, 12*32, 13*32, 14*32, 15*32 },
+ 128*8
+};
+
+static GFXDECODE_START( bbusters )
+ GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 )
+ GFXDECODE_ENTRY( "gfx2", 0, spritelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0, spritelayout, 512, 16 )
+ GFXDECODE_ENTRY( "gfx4", 0, tilelayout, 768, 16 )
+ GFXDECODE_ENTRY( "gfx5", 0, tilelayout, 1024+256, 16 )
+GFXDECODE_END
+
+static GFXDECODE_START( mechatt )
+ GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 )
+ GFXDECODE_ENTRY( "gfx2", 0, spritelayout, 256, 16 )
+ GFXDECODE_ENTRY( "gfx3", 0, spritelayout, 512, 16 )
+ GFXDECODE_ENTRY( "gfx4", 0, tilelayout, 512, 16 )
+ GFXDECODE_ENTRY( "gfx5", 0, tilelayout, 768, 16 )
+GFXDECODE_END
+
+/******************************************************************************/
+
+static void sound_irq( device_t *device, int irq )
+{
+ cputag_set_input_line(device->machine(), "audiocpu", 0, irq ? ASSERT_LINE : CLEAR_LINE);
+}
+
+static const ym2608_interface ym2608_config =
+{
+ {
+ AY8910_LEGACY_OUTPUT | AY8910_SINGLE_OUTPUT,
+ AY8910_DEFAULT_LOADS,
+ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL
+ },
+ sound_irq
+};
+
+static const ym2610_interface ym2610_config =
+{
+ sound_irq
+};
+
+/******************************************************************************/
+
+static SCREEN_EOF( bbuster )
+{
+ address_space *space = machine.device("maincpu")->memory().space(AS_PROGRAM);
+
+ buffer_spriteram16_w(space,0,0,0xffff);
+ buffer_spriteram16_2_w(space,0,0,0xffff);
+}
+
+static SCREEN_EOF( mechatt )
+{
+ address_space *space = machine.device("maincpu")->memory().space(AS_PROGRAM);
+ buffer_spriteram16_w(space,0,0,0xffff);
+}
+
+static MACHINE_CONFIG_START( bbusters, bbusters_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", M68000, 12000000)
+ MCFG_CPU_PROGRAM_MAP(bbusters_map)
+ MCFG_CPU_VBLANK_INT("screen", irq6_line_hold)
+
+ MCFG_CPU_ADD("audiocpu", Z80,4000000) /* Accurate */
+ MCFG_CPU_PROGRAM_MAP(sound_map)
+ MCFG_CPU_IO_MAP(sound_portmap)
+
+ MCFG_NVRAM_ADD_0FILL("eeprom")
+
+ /* video hardware */
+ MCFG_VIDEO_ATTRIBUTES(VIDEO_BUFFERS_SPRITERAM)
+
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MCFG_SCREEN_SIZE(64*8, 32*8)
+ MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
+ MCFG_SCREEN_UPDATE(bbuster)
+ MCFG_SCREEN_EOF(bbuster)
+
+ MCFG_GFXDECODE(bbusters)
+ MCFG_PALETTE_LENGTH(2048)
+
+ MCFG_VIDEO_START(bbuster)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
+
+ MCFG_SOUND_ADD("ymsnd", YM2610, 8000000)
+ MCFG_SOUND_CONFIG(ym2610_config)
+ MCFG_SOUND_ROUTE(0, "lspeaker", 1.0)
+ MCFG_SOUND_ROUTE(0, "rspeaker", 1.0)
+ MCFG_SOUND_ROUTE(1, "lspeaker", 1.0)
+ MCFG_SOUND_ROUTE(2, "rspeaker", 1.0)
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_START( mechatt, bbusters_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", M68000, 12000000)
+ MCFG_CPU_PROGRAM_MAP(mechatt_map)
+ MCFG_CPU_VBLANK_INT("screen", irq4_line_hold)
+
+ MCFG_CPU_ADD("audiocpu", Z80,4000000) /* Accurate */
+ MCFG_CPU_PROGRAM_MAP(sound_map)
+ MCFG_CPU_IO_MAP(sounda_portmap)
+
+ /* video hardware */
+ MCFG_VIDEO_ATTRIBUTES(VIDEO_BUFFERS_SPRITERAM)
+
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MCFG_SCREEN_SIZE(64*8, 32*8)
+ MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
+ MCFG_SCREEN_UPDATE(mechatt)
+ MCFG_SCREEN_EOF(mechatt)
+
+ MCFG_GFXDECODE(mechatt)
+ MCFG_PALETTE_LENGTH(1024)
+
+ MCFG_VIDEO_START(mechatt)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
+
+ MCFG_SOUND_ADD("ymsnd", YM2608, 8000000)
+ MCFG_SOUND_CONFIG(ym2608_config)
+ MCFG_SOUND_ROUTE(0, "lspeaker", 0.50)
+ MCFG_SOUND_ROUTE(0, "rspeaker", 0.50)
+ MCFG_SOUND_ROUTE(1, "lspeaker", 1.0)
+ MCFG_SOUND_ROUTE(2, "rspeaker", 1.0)
+MACHINE_CONFIG_END
+
+/******************************************************************************/
+
+ROM_START( bbusters )
+ ROM_REGION( 0x80000, "maincpu", 0 )
+ ROM_LOAD16_BYTE( "bb-3.k10", 0x000000, 0x20000, CRC(04da1820) SHA1(0b6e06adf9c181d7aef28f781efbdd2c225fe81e) )
+ ROM_LOAD16_BYTE( "bb-5.k12", 0x000001, 0x20000, CRC(777e0611) SHA1(b7ac0c6ea3738d560a5be75aed286821de918808) )
+ ROM_LOAD16_BYTE( "bb-2.k8", 0x040000, 0x20000, CRC(20141805) SHA1(0958579681bda81bcf48d020a14bc147c1e575f1) )
+ ROM_LOAD16_BYTE( "bb-4.k11", 0x040001, 0x20000, CRC(d482e0e9) SHA1(e56ca92965e8954b613ba4b0e3975e3a12840c30) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "bb-1.e6", 0x000000, 0x10000, CRC(4360f2ee) SHA1(4c6b212f59389bdf4388893d2030493b110ac087) )
+
+ ROM_REGION( 0x020000, "gfx1", 0 )
+ ROM_LOAD( "bb-10.l9", 0x000000, 0x20000, CRC(490c0d9b) SHA1(567c25a6d96407259c64061d674305e4117d9fa4) )
+
+ ROM_REGION( 0x200000, "gfx2", 0 )
+ ROM_LOAD( "bb-f11.m16", 0x000000, 0x80000, CRC(39fdf9c0) SHA1(80392947e3a1831c3ee80139f6f3bdc3bafa4f0d) )
+ ROM_LOAD( "bb-f12.m13", 0x080000, 0x80000, CRC(69ee046b) SHA1(5c0435f1ce76b584fa8d154d7617d73c7ab5f62f) )
+ ROM_LOAD( "bb-f13.m12", 0x100000, 0x80000, CRC(f5ef840e) SHA1(dd0f630c52076e0d330f47931e68a3ae9a401078) )
+ ROM_LOAD( "bb-f14.m11", 0x180000, 0x80000, CRC(1a7df3bb) SHA1(1f27a528e6f89fe56a7342c4f1ff733da0a09327) )
+
+ ROM_REGION( 0x200000, "gfx3", 0 )
+ ROM_LOAD( "bb-f21.l10", 0x000000, 0x80000, CRC(530f595b) SHA1(820898693b878c4423de9c244f943d39ea69515e) )
+ ROM_LOAD( "bb-f22.l12", 0x080000, 0x80000, CRC(889c562e) SHA1(d19172d6515ab9793c98de75d6e41687e61a408d) )
+ ROM_LOAD( "bb-f23.l13", 0x100000, 0x80000, CRC(c89fe0da) SHA1(92be860a7191e7473c42aa2da981eda873219d3d) )
+ ROM_LOAD( "bb-f24.l15", 0x180000, 0x80000, CRC(e0d81359) SHA1(2213c17651b6c023a456447f352b0739439f913a) )
+
+ ROM_REGION( 0x80000, "gfx4", 0 )
+ ROM_LOAD( "bb-back1.m4", 0x000000, 0x80000, CRC(b5445313) SHA1(3c99b557b2af30ff0fbc8a7dc6c40448c4f327db) )
+
+ ROM_REGION( 0x80000, "gfx5", 0 )
+ ROM_LOAD( "bb-back2.m6", 0x000000, 0x80000, CRC(8be996f6) SHA1(1e2c56f4c24793f806d7b366b92edc03145ae94c) )
+
+ ROM_REGION( 0x10000, "user1", 0 ) /* Zoom table */
+ /* same rom exists in 4 different locations on the board */
+ ROM_LOAD( "bb-6.e7", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "bb-7.h7", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "bb-8.a14", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "bb-9.c14", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+
+ ROM_REGION( 0x80000, "ymsnd", 0 )
+ ROM_LOAD( "bb-pcma.l5", 0x000000, 0x80000, CRC(44cd5bfe) SHA1(26a612191a0aa614c090203485aba17c99c763ee) )
+
+ ROM_REGION( 0x80000, "ymsnd.deltat", 0 )
+ ROM_LOAD( "bb-pcmb.l3", 0x000000, 0x80000, CRC(c8d5dd53) SHA1(0f7e94532cc14852ca12c1b792e5479667af899e) )
+
+ ROM_REGION( 0x100, "eeprom", 0 )
+ ROM_LOAD( "bbusters-eeprom.bin", 0x00, 0x100, CRC(a52ebd66) SHA1(de04db6f1510700c61bf152799452a80220ae87c) )
+ROM_END
+
+ROM_START( bbustersu )
+ ROM_REGION( 0x80000, "maincpu", 0 )
+ ROM_LOAD16_BYTE( "bbv2-3.k10", 0x000000, 0x20000, CRC(6930088b) SHA1(265f0b584d81b6fdcda5c3a2e0bd15d56443bb35) )
+ ROM_LOAD16_BYTE( "bbv2-5.k12", 0x000001, 0x20000, CRC(cfdb2c6c) SHA1(54a837dc84b74d12e931f607f3dc9ee06a7e4d31) )
+ ROM_LOAD16_BYTE( "bb-2.k8", 0x040000, 0x20000, CRC(20141805) SHA1(0958579681bda81bcf48d020a14bc147c1e575f1) )
+ ROM_LOAD16_BYTE( "bb-4.k11", 0x040001, 0x20000, CRC(d482e0e9) SHA1(e56ca92965e8954b613ba4b0e3975e3a12840c30) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "bb-1.e6", 0x000000, 0x10000, CRC(4360f2ee) SHA1(4c6b212f59389bdf4388893d2030493b110ac087) )
+
+ ROM_REGION( 0x020000, "gfx1", 0 )
+ ROM_LOAD( "bb-10.l9", 0x000000, 0x20000, CRC(490c0d9b) SHA1(567c25a6d96407259c64061d674305e4117d9fa4) )
+
+ ROM_REGION( 0x200000, "gfx2", 0 )
+ ROM_LOAD( "bb-f11.m16", 0x000000, 0x80000, CRC(39fdf9c0) SHA1(80392947e3a1831c3ee80139f6f3bdc3bafa4f0d) )
+ ROM_LOAD( "bb-f12.m13", 0x080000, 0x80000, CRC(69ee046b) SHA1(5c0435f1ce76b584fa8d154d7617d73c7ab5f62f) )
+ ROM_LOAD( "bb-f13.m12", 0x100000, 0x80000, CRC(f5ef840e) SHA1(dd0f630c52076e0d330f47931e68a3ae9a401078) )
+ ROM_LOAD( "bb-f14.m11", 0x180000, 0x80000, CRC(1a7df3bb) SHA1(1f27a528e6f89fe56a7342c4f1ff733da0a09327) )
+
+ ROM_REGION( 0x200000, "gfx3", 0 )
+ ROM_LOAD( "bb-f21.l10", 0x000000, 0x80000, CRC(530f595b) SHA1(820898693b878c4423de9c244f943d39ea69515e) )
+ ROM_LOAD( "bb-f22.l12", 0x080000, 0x80000, CRC(889c562e) SHA1(d19172d6515ab9793c98de75d6e41687e61a408d) )
+ ROM_LOAD( "bb-f23.l13", 0x100000, 0x80000, CRC(c89fe0da) SHA1(92be860a7191e7473c42aa2da981eda873219d3d) )
+ ROM_LOAD( "bb-f24.l15", 0x180000, 0x80000, CRC(e0d81359) SHA1(2213c17651b6c023a456447f352b0739439f913a) )
+
+ ROM_REGION( 0x80000, "gfx4", 0 )
+ ROM_LOAD( "bb-back1.m4", 0x000000, 0x80000, CRC(b5445313) SHA1(3c99b557b2af30ff0fbc8a7dc6c40448c4f327db) )
+
+ ROM_REGION( 0x80000, "gfx5", 0 )
+ ROM_LOAD( "bb-back2.m6", 0x000000, 0x80000, CRC(8be996f6) SHA1(1e2c56f4c24793f806d7b366b92edc03145ae94c) )
+
+ ROM_REGION( 0x10000, "user1", 0 ) /* Zoom table */
+ /* same rom exists in 4 different locations on the board */
+ ROM_LOAD( "bb-6.e7", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "bb-7.h7", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "bb-8.a14", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "bb-9.c14", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+
+ ROM_REGION( 0x80000, "ymsnd", 0 )
+ ROM_LOAD( "bb-pcma.l5", 0x000000, 0x80000, CRC(44cd5bfe) SHA1(26a612191a0aa614c090203485aba17c99c763ee) )
+
+ ROM_REGION( 0x80000, "ymsnd.deltat", 0 )
+ ROM_LOAD( "bb-pcma.l5", 0x000000, 0x80000, CRC(44cd5bfe) SHA1(26a612191a0aa614c090203485aba17c99c763ee) )
+
+ ROM_REGION( 0x100, "eeprom", 0 )
+ ROM_LOAD( "bbusters-eeprom.bin", 0x00, 0x100, CRC(a52ebd66) SHA1(de04db6f1510700c61bf152799452a80220ae87c) )
+ROM_END
+
+
+ROM_START( mechatt )
+ ROM_REGION( 0x80000, "maincpu", 0 )
+ ROM_LOAD16_BYTE( "ma5-e.bin", 0x000000, 0x20000, CRC(9bbb852a) SHA1(34b696bf79cf53cac1c384a3143c0f3f243a71f3) )
+ ROM_LOAD16_BYTE( "ma4.bin", 0x000001, 0x20000, CRC(0d414918) SHA1(0d51b893d37ba124b983beebb691e65bdc52d300) )
+ ROM_LOAD16_BYTE( "ma7.bin", 0x040000, 0x20000, CRC(61d85e1b) SHA1(46234d48ac21c481a5e70c6a654a341ebdd4cd3a) )
+ ROM_LOAD16_BYTE( "ma6-f.bin", 0x040001, 0x20000, CRC(4055fe8d) SHA1(b4d8bd5f73805ce1c332eff657dddbb88ff45b37) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "ma3.bin", 0x000000, 0x10000, CRC(c06cc8e1) SHA1(65f5f1901120d633f7c3ba07432a188fd7fd7272) )
+
+ ROM_REGION( 0x020000, "gfx1", 0 )
+ ROM_LOAD( "ma1.bin", 0x000000, 0x10000, CRC(24766917) SHA1(9082a8ae849605ce65b5a0493ae69cfe282f7e7b) )
+
+ ROM_REGION( 0x200000, "gfx2", 0 )
+ ROM_LOAD( "mao89p13.bin", 0x000000, 0x80000, CRC(8bcb16cf) SHA1(409ee1944188d9ce39adce29b1df029b560dd5b0) )
+ ROM_LOAD( "ma189p15.bin", 0x080000, 0x80000, CRC(b84d9658) SHA1(448adecb0067d8f5b219ec2f94a8dec84187a554) )
+ ROM_LOAD( "ma289p17.bin", 0x100000, 0x80000, CRC(6cbe08ac) SHA1(8f81f6e92b84ab6867452011d52f3e7689c62a1a) )
+ ROM_LOAD( "ma389m15.bin", 0x180000, 0x80000, CRC(34d4585e) SHA1(38d9fd5d775e4b3c8b8b487a6ba9b8bdcb3274b0) )
+
+ ROM_REGION( 0x10000, "gfx3", ROMREGION_ERASEFF )
+ /* Unused */
+
+ ROM_REGION( 0x80000, "gfx4", 0 )
+ ROM_LOAD( "mab189a2.bin", 0x000000, 0x80000, CRC(e1c8b4d0) SHA1(2f8a1839cca892f8380c7cffe7a12e615d38fd55) )
+
+ ROM_REGION( 0x80000, "gfx5", 0 )
+ ROM_LOAD( "mab289c2.bin", 0x000000, 0x80000, CRC(14f97ceb) SHA1(a22033532ea616dc3a3db8b66ad6ccc6172ed7cc) )
+
+ ROM_REGION( 0x20000, "ymsnd", 0 )
+ ROM_LOAD( "ma2.bin", 0x000000, 0x20000, CRC(ea4cc30d) SHA1(d8f089fc0ce76309411706a8110ad907f93dc97e) )
+
+ ROM_REGION( 0x20000, "user1", 0 ) /* Zoom table */
+ ROM_LOAD( "ma8.bin", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "ma9.bin", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) ) /* identical to ma8 */
+ROM_END
+
+
+ROM_START( mechattu )
+ ROM_REGION( 0x80000, "maincpu", 0 )
+ ROM_LOAD16_BYTE( "ma5u.bin", 0x000000, 0x20000, CRC(485ea606) SHA1(0c499f08d7c6d861ba7c50a8f577823613a7923c) )
+ ROM_LOAD16_BYTE( "ma4u.bin", 0x000001, 0x20000, CRC(09fa31ec) SHA1(008abb2e09f83614c277471e534f20cba3e354d7) )
+ ROM_LOAD16_BYTE( "ma7u.bin", 0x040000, 0x20000, CRC(f45b2c70) SHA1(65523d202d378bab890f1f7bffdde152dd246d4a) )
+ ROM_LOAD16_BYTE( "ma6u.bin", 0x040001, 0x20000, CRC(d5d68ce6) SHA1(16057d882781015f6d1c7bb659e0812a8459c3f0) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 )
+ ROM_LOAD( "ma3.bin", 0x000000, 0x10000, CRC(c06cc8e1) SHA1(65f5f1901120d633f7c3ba07432a188fd7fd7272) )
+
+ ROM_REGION( 0x020000, "gfx1", 0 )
+ ROM_LOAD( "ma1.bin", 0x000000, 0x10000, CRC(24766917) SHA1(9082a8ae849605ce65b5a0493ae69cfe282f7e7b) )
+
+ ROM_REGION( 0x200000, "gfx2", 0 )
+ ROM_LOAD( "mao89p13.bin", 0x000000, 0x80000, CRC(8bcb16cf) SHA1(409ee1944188d9ce39adce29b1df029b560dd5b0) )
+ ROM_LOAD( "ma189p15.bin", 0x080000, 0x80000, CRC(b84d9658) SHA1(448adecb0067d8f5b219ec2f94a8dec84187a554) )
+ ROM_LOAD( "ma289p17.bin", 0x100000, 0x80000, CRC(6cbe08ac) SHA1(8f81f6e92b84ab6867452011d52f3e7689c62a1a) )
+ ROM_LOAD( "ma389m15.bin", 0x180000, 0x80000, CRC(34d4585e) SHA1(38d9fd5d775e4b3c8b8b487a6ba9b8bdcb3274b0) )
+
+ ROM_REGION( 0x10000, "gfx3", ROMREGION_ERASEFF )
+ /* Unused */
+
+ ROM_REGION( 0x80000, "gfx4", 0 )
+ ROM_LOAD( "mab189a2.bin", 0x000000, 0x80000, CRC(e1c8b4d0) SHA1(2f8a1839cca892f8380c7cffe7a12e615d38fd55) )
+
+ ROM_REGION( 0x80000, "gfx5", 0 )
+ ROM_LOAD( "mab289c2.bin", 0x000000, 0x80000, CRC(14f97ceb) SHA1(a22033532ea616dc3a3db8b66ad6ccc6172ed7cc) )
+
+ ROM_REGION( 0x20000, "ymsnd", 0 )
+ ROM_LOAD( "ma2.bin", 0x000000, 0x20000, CRC(ea4cc30d) SHA1(d8f089fc0ce76309411706a8110ad907f93dc97e) )
+
+ ROM_REGION( 0x20000, "user1", 0 ) /* Zoom table */
+ ROM_LOAD( "ma8.bin", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) )
+ ROM_LOAD( "ma9.bin", 0x000000, 0x10000, CRC(61f3de03) SHA1(736f9634fe054ea68a2aa90a743bd0dc320f23c9) ) /* identical to ma8 */
+ROM_END
+
+
+/******************************************************************************/
+
+// as soon as you calibrate the guns in test mode the game refuses to boot
+GAME( 1989, bbusters, 0, bbusters, bbusters, 0, ROT0, "SNK", "Beast Busters (World)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_SOUND )
+GAME( 1989, bbustersu,bbusters, bbusters, bbusters, 0, ROT0, "SNK", "Beast Busters (US, Version 2)", GAME_IMPERFECT_GRAPHICS | GAME_IMPERFECT_SOUND )
+
+GAME( 1989, mechatt, 0, mechatt, mechatt, 0, ROT0, "SNK", "Mechanized Attack (World)", 0 )
+GAME( 1989, mechattu, mechatt, mechatt, mechattu, 0, ROT0, "SNK", "Mechanized Attack (US)", 0 )