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// license:BSD-3-Clause
// copyright-holders:Carlos A. Lozano
/**************************************************************************

Blood Bros, West Story & Sky Smasher
TAD Corporation 1990
68000 + Z80 + YM3931 + YM3812

driver by Carlos A. Lozano Baides

TODO:
West Story:
- sound (still has IRQ problems)
- some bad sprites (2 bad sprite roms, should the actual decoded data match?)


Blood Bros  (c) 1990 Nihon System [Seibu hardware]
-----------
The manual states:

 At Power On, if you touch the joystick, you will have DIP-SW setting on
 the screen

This works for all sets and the bootleg.

Fabtek licensed this game for the U.S. along with other games by Seibu and TAD.
Though no Fabtek-licensed set has been dumped yet, and the program code does
not appear to test a region byte, the TAD strings displayed on the title screen
are both space-justified to the same length as the unused string "U.S. LICENSEE
FABTEK, INC."

Sky Smasher  (c) 1990 Nihon System [Seibu hardware]
-----------

Like some other Seibu hardware games, hold P1 right at boot to
view DIP descriptions. The manual states:

 At Power On, if you touch the joystick or SHOOT or MISSILE button, you will
 have DIP-SW setting on the screen

Game does not appear to have cocktail mode. The screen hardware
is undoubtedly capable of flipscreen and layer priority flipping
however.(which is why we have MACHINE_NO_COCKTAIL despite the games
being upright)

If the word at 0x488 in the maincpu ROM is set to any value other than 1, the
attract mode will include the "Winners Don't Use Drugs" screen. The only other
change this effects is reducing the first "NIHON SYSTEM INC." on the title
screen to the initials NSI. The string "US LICENSEE FABTEC INC" appears twice
in the program ROM, but no code that might display it is known to exist.

Dumpers Notes
=============

PCB is made by Seibu

Sound           - Z80
                - YM3931 SEI0100BU    (64 pin DIP)
                - YM3812
                - M6295

GFX             - SEI0210   custom    (128 pin PQFP)
                - SEI0220BP custom    (80 pin PQFP)
                - SEI0200   custom    (100 pin PQFP)
                - SEI0160   custom    (60 pin PQFP)


Stephh's notes (based on the games M68000 code and some tests) :

1) 'bloodbro'

  - When "Starting Coin" Dip Switch is set to "x2", you need 2 coins to start
    a game (but 1 coin to join), then 1 coin to continue.
    However, it you insert 2 coins, and press START2, you start a 2 players game.
    Also note that when "Starting Coin" Dip Switch is set to "x2", SERVICE1
    adds 2 credits instead of 1.

  - Bits 6 and 7 of DSW are told to be unused, but they are tested before
    entering the initials (code at 0x004a1e, 0x014bb0 and 0x014c84)


2) 'bloodbroa'

  - When "Starting Coin" Dip Switch is set to "x2", you need 2 coins to start
    a game (but 1 coin to join), then 1 coin to continue.
    However, it you insert 2 coins, and press START2, you start a 2 players game.
    Also note that when "Starting Coin" Dip Switch is set to "x2", SERVICE1
    adds 2 credits instead of 1.

  - Bits 6 and 7 of DSW are told to be unused, but they are tested before
    entering the initials (code at 0x004a46, 0x014bd8 and 0x014cac)


3) 'weststry'

  - This bootleg has been released by Datsu in 1991. This "company" also
    bootlegged "Toki" (another TAD game) in 1990, and several Sega titles.

  - When "Starting Coin" Dip Switch is set to "x2", you need 2 coins to start
    a game (but 1 coin to join), then 1 coin to continue.
    However, it you insert 2 coins, and press START2, you start a 2 players game.

  - Bits 6 and 7 of DSW are told to be unused, but bit 7 is tested when
    entering the initials (code at 0x00497e, 0x014cf2 and 0x014dc4
    Note that bit 8 (!) is tested at 0x0049a2, so this has no effect.
  - Bit 7 of DSW is also "merged" with bit 6 (code at 0x0002f6 and 0x000326).


4) 'skysmash'

  - This game only has 2 buttons : bits 6 and 14 of players inputs are NEVER tested !

  - When "Starting Coin" Dip Switch is set to "x2", you need 2 coins to start
    a game (but 1 coin to join), then 1 coin to continue.
    However, it you insert 2 coins, and press START2, you start a 2 players game.
    Also note that when "Starting Coin" Dip Switch is set to "x2", SERVICE1
    adds 2 credits instead of 1.

  - Bit 6 of DSW was previouly used as a "Cabinet" Dip Switch (OFF = Upright
    and ON = Cocktail), but it isn't tested outside of the "test mode".
    Check code from 0x021abe to 0x021afc (and the "rts" instruction at 0x021adc)
  - Bit 7 of DSW is only tested at 0x02035e and writes a value to 0x0c0100.
    I don't know what it is supposed to do, but it could be a "Flip Screen"
    Dip Switch as in 'toki' (same manufacturer and similar hardware).


DIP locations verified for Blood Bros. & Sky Smasher via manual & DIP-SW setting
    screens at power up.

**************************************************************************/

#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "cpu/z80/z80.h"
#include "sound/3812intf.h"
#include "includes/bloodbro.h"
#include "video/seibu_crtc.h"


/* Memory Maps */
static ADDRESS_MAP_START( common_map, AS_PROGRAM, 16, bloodbro_state )
	AM_RANGE(0x000000, 0x07ffff) AM_ROM
	AM_RANGE(0x080000, 0x08afff) AM_RAM
	AM_RANGE(0x08b000, 0x08bfff) AM_RAM AM_SHARE("spriteram")
	AM_RANGE(0x08c000, 0x08c3ff) AM_RAM_WRITE(bgvideoram_w) AM_SHARE("bgvideoram")
	AM_RANGE(0x08c400, 0x08cfff) AM_RAM
	AM_RANGE(0x08d000, 0x08d3ff) AM_RAM_WRITE(fgvideoram_w) AM_SHARE("fgvideoram")
	AM_RANGE(0x08d400, 0x08d7ff) AM_RAM
	AM_RANGE(0x08d800, 0x08dfff) AM_RAM_WRITE(txvideoram_w) AM_SHARE("txvideoram")
	AM_RANGE(0x08e000, 0x08e7ff) AM_RAM
	AM_RANGE(0x08e800, 0x08f7ff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
	AM_RANGE(0x08f800, 0x08ffff) AM_RAM
	AM_RANGE(0x0a0000, 0x0a000d) AM_DEVREADWRITE("seibu_sound", seibu_sound_device, main_word_r, main_word_w)
//  AM_RANGE(0x0c0000, 0x0c007f) AM_RAM AM_SHARE("scroll")
	AM_RANGE(0x0c0080, 0x0c0081) AM_WRITENOP // ??? IRQ Ack VBL?
	AM_RANGE(0x0c00c0, 0x0c00c1) AM_WRITENOP // ??? watchdog?
	AM_RANGE(0x0c0100, 0x0c0101) AM_WRITENOP // ??? written once
	AM_RANGE(0x0e0000, 0x0e0001) AM_READ_PORT("DSW")
	AM_RANGE(0x0e0002, 0x0e0003) AM_READ_PORT("IN0")
	AM_RANGE(0x0e0004, 0x0e0005) AM_READ_PORT("IN1")
ADDRESS_MAP_END

static ADDRESS_MAP_START( bloodbro_map, AS_PROGRAM, 16, bloodbro_state )
	AM_IMPORT_FROM(common_map)
	AM_RANGE(0xc0000, 0xc004f) AM_DEVREADWRITE("crtc", seibu_crtc_device, read, write)
ADDRESS_MAP_END

static ADDRESS_MAP_START( skysmash_map, AS_PROGRAM, 16, bloodbro_state )
	AM_IMPORT_FROM(common_map)
	AM_RANGE(0xc0000, 0xc004f) AM_DEVREADWRITE("crtc", seibu_crtc_device, read_alt, write_alt)
ADDRESS_MAP_END

WRITE8_MEMBER(bloodbro_state::weststry_soundlatch_w)
{
	m_seibu_sound->main_word_w(space, offset, data, mem_mask);

	// Probably incorrect, but these interrupts must be triggered somehow
	if (offset == 1)
		m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
	else
		m_audiocpu->set_input_line(0, ASSERT_LINE);
}

static ADDRESS_MAP_START( weststry_map, AS_PROGRAM, 16, bloodbro_state )
	AM_RANGE(0x000000, 0x07ffff) AM_ROM
	AM_RANGE(0x080000, 0x08ffff) AM_RAM // old VRAM areas still used, but bootleg code copies them to higher addresses
	AM_RANGE(0x0c1000, 0x0c1001) AM_READ_PORT("DSW")
	AM_RANGE(0x0c1002, 0x0c1003) AM_READ_PORT("IN0")
	AM_RANGE(0x0c1004, 0x0c1005) AM_READ_PORT("IN1")
	AM_RANGE(0x0c1000, 0x0c1003) AM_WRITE8(weststry_soundlatch_w, 0xff00)
	AM_RANGE(0x0c1004, 0x0c100b) AM_WRITE(weststry_layer_scroll_w)
	AM_RANGE(0x0e0002, 0x0e0003) AM_READNOP // remnant of old code
	AM_RANGE(0x122800, 0x122bff) AM_RAM // cleared at startup
	AM_RANGE(0x122c00, 0x122fff) AM_RAM_WRITE(fgvideoram_w) AM_SHARE("fgvideoram")
	AM_RANGE(0x123000, 0x1233ff) AM_RAM_WRITE(bgvideoram_w) AM_SHARE("bgvideoram")
	AM_RANGE(0x123400, 0x1237ff) AM_RAM // cleared at startup
	AM_RANGE(0x123800, 0x123fff) AM_RAM_WRITE(txvideoram_w) AM_SHARE("txvideoram")
	AM_RANGE(0x124000, 0x124005) AM_RAM
	AM_RANGE(0x124006, 0x1247fd) AM_RAM AM_SHARE("spriteram")
	AM_RANGE(0x128000, 0x1287ff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
ADDRESS_MAP_END

/* Input Ports */

#define BLOODBRO_COINAGE \
	PORT_DIPNAME( 0x0001, 0x0001, "Coin Mode" )                  PORT_DIPLOCATION("SW1:1") \
	PORT_DIPSETTING(      0x0001, "Mode 1" ) \
	PORT_DIPSETTING(      0x0000, "Mode 2" ) \
	/* Coin Mode 1 */ \
	PORT_DIPNAME( 0x001e, 0x001e, DEF_STR( Coinage ) )           PORT_DIPLOCATION("SW1:2,3,4,5") PORT_CONDITION("DSW",0x0001,EQUALS,0x0001) \
	PORT_DIPSETTING(      0x0014, DEF_STR( 6C_1C ) ) \
	PORT_DIPSETTING(      0x0016, DEF_STR( 5C_1C ) ) \
	PORT_DIPSETTING(      0x0018, DEF_STR( 4C_1C ) ) \
	PORT_DIPSETTING(      0x001a, DEF_STR( 3C_1C ) ) \
	PORT_DIPSETTING(      0x0002, DEF_STR( 8C_3C ) ) \
	PORT_DIPSETTING(      0x001c, DEF_STR( 2C_1C ) ) \
	PORT_DIPSETTING(      0x0004, DEF_STR( 5C_3C ) ) \
	PORT_DIPSETTING(      0x0006, DEF_STR( 3C_2C ) ) \
	PORT_DIPSETTING(      0x001e, DEF_STR( 1C_1C ) ) \
	PORT_DIPSETTING(      0x0008, DEF_STR( 2C_3C ) ) \
	PORT_DIPSETTING(      0x0012, DEF_STR( 1C_2C ) ) \
	PORT_DIPSETTING(      0x0010, DEF_STR( 1C_3C ) ) \
	PORT_DIPSETTING(      0x000e, DEF_STR( 1C_4C ) ) \
	PORT_DIPSETTING(      0x000c, DEF_STR( 1C_5C ) ) \
	PORT_DIPSETTING(      0x000a, DEF_STR( 1C_6C ) ) \
	PORT_DIPSETTING(      0x0000, DEF_STR( Free_Play ) ) \
	/* Coin Mode 2 */ \
	PORT_DIPNAME( 0x0006, 0x0006, DEF_STR( Coin_A ) )            PORT_DIPLOCATION("SW1:2,3") PORT_CONDITION("DSW",0x0001,EQUALS,0x0000) \
	PORT_DIPSETTING(      0x0000, DEF_STR( 5C_1C ) ) \
	PORT_DIPSETTING(      0x0002, DEF_STR( 3C_1C ) ) \
	PORT_DIPSETTING(      0x0004, DEF_STR( 2C_1C ) ) \
	PORT_DIPSETTING(      0x0006, DEF_STR( 1C_1C ) ) \
	PORT_DIPNAME( 0x0018, 0x0018, DEF_STR( Coin_B ) )            PORT_DIPLOCATION("SW1:4,5") PORT_CONDITION("DSW",0x0001,EQUALS,0x0000) \
	PORT_DIPSETTING(      0x0018, DEF_STR( 1C_2C ) ) \
	PORT_DIPSETTING(      0x0010, DEF_STR( 1C_3C ) ) \
	PORT_DIPSETTING(      0x0008, DEF_STR( 1C_5C ) ) \
	PORT_DIPSETTING(      0x0000, DEF_STR( 1C_6C ) ) \
	PORT_DIPNAME( 0x0020, 0x0020, "Starting Coin" )              PORT_DIPLOCATION("SW1:6") \
	PORT_DIPSETTING(      0x0020, DEF_STR( Normal ) ) \
	PORT_DIPSETTING(      0x0000, "x2" )

static INPUT_PORTS_START( bloodbro_base )
	PORT_START("DSW")
	BLOODBRO_COINAGE
	/*  SW1:7,8 is listed as "ROM change option", "optional"
	                     A  B  C  D
	    Coin Up          0  1  1  1
	    Screen Complete  0  0  0  1
	    Stage Complete   1  1  3  1
	    Top 10           1  3  3  3
	    High Score       1  4  5  4
	    Complete Game    5  5 10 15

	    D limits 8 tickets/coin except completion

	    The sets handled in MAME don't seem to have this "feature"
	PORT_DIPNAME( 0x00c0, 0x00c0, "Ticket Dispenser Payout Mode" ) PORT_DIPLOCATION("SW1:7,8")
	PORT_DIPSETTING(      0x00c0, "A" )
	PORT_DIPSETTING(      0x0080, "B" )
	PORT_DIPSETTING(      0x0040, "C" )
	PORT_DIPSETTING(      0x0000, "D" )
	*/
	PORT_DIPUNKNOWN_DIPLOC( 0x0040, IP_ACTIVE_LOW, "SW1:7" )
	PORT_DIPUNKNOWN_DIPLOC( 0x0080, IP_ACTIVE_LOW, "SW1:8" )
	PORT_DIPNAME( 0x0300, 0x0300, DEF_STR( Lives ) )             PORT_DIPLOCATION("SW2:1,2")
	PORT_DIPSETTING(      0x0000, "1" )
	PORT_DIPSETTING(      0x0200, "2" )
	PORT_DIPSETTING(      0x0300, "3" )
	PORT_DIPSETTING(      0x0100, "5" )
	PORT_DIPNAME( 0x0c00, 0x0c00, DEF_STR( Bonus_Life ) )        PORT_DIPLOCATION("SW2:3,4")
	PORT_DIPSETTING(      0x0c00, "300K 500K+" )
	PORT_DIPSETTING(      0x0800, "500K+" )
	PORT_DIPSETTING(      0x0400, "500K" )
	PORT_DIPSETTING(      0x0000, DEF_STR( None ) )
	PORT_DIPNAME( 0x3000, 0x3000, DEF_STR( Difficulty ) )        PORT_DIPLOCATION("SW2:5,6")
	PORT_DIPSETTING(      0x2000, DEF_STR( Easy ) )
	PORT_DIPSETTING(      0x3000, DEF_STR( Normal ) )
	PORT_DIPSETTING(      0x1000, DEF_STR( Hard ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( Very_Hard ) )
	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Allow_Continue ) )    PORT_DIPLOCATION("SW2:7")
	PORT_DIPSETTING(      0x0000, DEF_STR( No ) )
	PORT_DIPSETTING(      0x4000, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Demo_Sounds ) )       PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x8000, DEF_STR( On ) )

	PORT_START("IN0")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)   // "Fire"
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)   // "Roll"
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)   // "Dynamite"
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN )  /* tested when "continue" - check code at 0x000598 */
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)   // "Fire"
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)   // "Roll"
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)   // "Dynamite"
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN )  /* tested - check code at 0x0005fe - VBLANK ? (probably not) */

	PORT_START("IN1")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x00e0, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END


static INPUT_PORTS_START( weststry )
	PORT_INCLUDE( bloodbro_base )

	SEIBU_COIN_INPUTS   /* coin inputs read through sound cpu */
INPUT_PORTS_END


static INPUT_PORTS_START( bloodbro )
	PORT_INCLUDE( bloodbro_base )

	PORT_MODIFY("IN1")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x000e, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x00e0, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNKNOWN )  /* tested - check code at 0x000800 */
	PORT_BIT( 0x0e00, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0xe000, IP_ACTIVE_LOW, IPT_UNKNOWN )

	SEIBU_COIN_INPUTS   /* coin inputs read through sound cpu */
INPUT_PORTS_END

static INPUT_PORTS_START( skysmash )
	PORT_START("DSW")
	BLOODBRO_COINAGE
	PORT_DIPUNUSED_DIPLOC( 0x0040, IP_ACTIVE_LOW, "SW1:7" )      /* see notes */
	PORT_DIPUNUSED_DIPLOC( 0x0080, IP_ACTIVE_LOW, "SW1:8" )      /* see notes */
	PORT_DIPNAME( 0x0300, 0x0300, DEF_STR( Lives ) )             PORT_DIPLOCATION("SW2:1,2")
	PORT_DIPSETTING(      0x0200, "2" )
	PORT_DIPSETTING(      0x0300, "3" )
	PORT_DIPSETTING(      0x0100, "5" )
	PORT_DIPSETTING(      0x0000, DEF_STR( Infinite ) )
	PORT_DIPNAME( 0x0c00, 0x0c00, DEF_STR( Bonus_Life ) )        PORT_DIPLOCATION("SW2:3,4")
	PORT_DIPSETTING(      0x0c00, "120K 200K+" )
	PORT_DIPSETTING(      0x0800, "200K+" )
	PORT_DIPSETTING(      0x0400, "250K+" )
	PORT_DIPSETTING(      0x0000, "200K" )
	PORT_DIPNAME( 0x3000, 0x3000, DEF_STR( Difficulty ) )        PORT_DIPLOCATION("SW2:5,6")
	PORT_DIPSETTING(      0x0000, DEF_STR( Easy ) )
	PORT_DIPSETTING(      0x3000, DEF_STR( Normal ) )
	PORT_DIPSETTING(      0x2000, DEF_STR( Hard ) )
	PORT_DIPSETTING(      0x1000, DEF_STR( Very_Hard ) )
	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Allow_Continue ) )    PORT_DIPLOCATION("SW2:7")
	PORT_DIPSETTING(      0x0000, DEF_STR( No ) )
	PORT_DIPSETTING(      0x4000, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Demo_Sounds ) )       PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x8000, DEF_STR( On ) )

	PORT_START("IN0")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)   // "Fire"
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)   // "Bomb"
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)   // "Fire"
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)   // "Bomb"
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("IN1")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x000e, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x00e0, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0e00, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0xe000, IP_ACTIVE_LOW, IPT_UNKNOWN )

	SEIBU_COIN_INPUTS   /* coin inputs read through sound cpu */
INPUT_PORTS_END


/* Graphics Layouts */

static const gfx_layout textlayout =
{
	8,8,    /* 8*8 characters */
	RGN_FRAC(1,2),  /* 4096 characters */
	4,  /* 4 bits per pixel */
	{ 0, 4, RGN_FRAC(1,2)+0, RGN_FRAC(1,2)+4 },
	{ 3, 2, 1, 0, 8+3, 8+2, 8+1, 8+0},
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	16*8    /* every char takes 16 consecutive bytes */
};

static const gfx_layout spritelayout =
{
	16,16,  /* 16*16 sprites  */
	RGN_FRAC(1,1),
	4,  /* 4 bits per pixel */
	{ 8, 12, 0, 4 },
	{ 3, 2, 1, 0, 16+3, 16+2, 16+1, 16+0,
				3+32*16, 2+32*16, 1+32*16, 0+32*16, 16+3+32*16, 16+2+32*16, 16+1+32*16, 16+0+32*16 },
	{ 0*16, 2*16, 4*16, 6*16, 8*16, 10*16, 12*16, 14*16,
			16*16, 18*16, 20*16, 22*16, 24*16, 26*16, 28*16, 30*16 },
	128*8   /* every sprite takes 128 consecutive bytes */
};

static const gfx_layout weststry_textlayout =
{
	8,8,    /* 8*8 sprites */
	RGN_FRAC(1,4),  /* 4096 sprites */
	4,  /* 4 bits per pixel */
	{ RGN_FRAC(0,4), RGN_FRAC(1,4), RGN_FRAC(2,4), RGN_FRAC(3,4) },
		{ 0, 1, 2, 3, 4, 5, 6, 7 },
		{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8 /* every sprite takes 8 consecutive bytes */
};

static const gfx_layout weststry_spritelayout =
{
	16,16,  /* 16*16 sprites */
	RGN_FRAC(1,4),  /* 8192 sprites */
	4,  /* 4 bits per pixel */
	{ RGN_FRAC(0,4), RGN_FRAC(1,4), RGN_FRAC(2,4), RGN_FRAC(3,4) },
	{ 0, 1, 2, 3, 4, 5, 6, 7,
			16*8+0, 16*8+1, 16*8+2, 16*8+3, 16*8+4, 16*8+5, 16*8+6, 16*8+7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
			8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8    /* every sprite takes 32 consecutive bytes */
};

/* Graphics Decode Info */

static GFXDECODE_START( bloodbro )
	GFXDECODE_ENTRY( "gfx1", 0x00000, textlayout,   0x70*16,  0x10 ) /* Text */
	GFXDECODE_ENTRY( "gfx2", 0x00000, spritelayout, 0x40*16,  0x10 ) /* Background */
	GFXDECODE_ENTRY( "gfx2", 0x00000, spritelayout, 0x50*16,  0x10 ) /* Foreground */
	GFXDECODE_ENTRY( "gfx3", 0x00000, spritelayout, 0x00*16,  0x10 ) /* Sprites */
GFXDECODE_END

static GFXDECODE_START( weststry )
	GFXDECODE_ENTRY( "gfx1", 0x00000, weststry_textlayout,     0x10*16,  0x10 )
	GFXDECODE_ENTRY( "gfx2", 0x00000, weststry_spritelayout,   0x30*16,  0x10 )
	GFXDECODE_ENTRY( "gfx2", 0x00000, weststry_spritelayout,   0x20*16,  0x10 )
	GFXDECODE_ENTRY( "gfx3", 0x00000, weststry_spritelayout,   0x00*16,  0x10 )
GFXDECODE_END

WRITE16_MEMBER( bloodbro_state::layer_en_w )
{
	m_layer_en = data;
}

WRITE16_MEMBER( bloodbro_state::layer_scroll_w )
{
	COMBINE_DATA(&m_scrollram[offset]);
}

WRITE16_MEMBER( bloodbro_state::weststry_layer_scroll_w )
{
	COMBINE_DATA(&m_scrollram[offset]);
}

/* Machine Drivers */

static MACHINE_CONFIG_START( bloodbro, bloodbro_state )
	// basic machine hardware
	MCFG_CPU_ADD("maincpu", M68000, XTAL_20MHz/2) /* verified on pcb */
	MCFG_CPU_PROGRAM_MAP(bloodbro_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", bloodbro_state,  irq4_line_hold)

	SEIBU_SOUND_SYSTEM_CPU(XTAL_7_15909MHz/2) /* verified on pcb */

	// video hardware

	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(59.39)    /* verified on pcb */
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MCFG_SCREEN_SIZE(32*8, 32*8)
	MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
	MCFG_SCREEN_UPDATE_DRIVER(bloodbro_state, screen_update_bloodbro)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_DEVICE_ADD("crtc", SEIBU_CRTC, 0)
	MCFG_SEIBU_CRTC_LAYER_EN_CB(WRITE16(bloodbro_state, layer_en_w))
	MCFG_SEIBU_CRTC_LAYER_SCROLL_CB(WRITE16(bloodbro_state, layer_scroll_w))


	MCFG_GFXDECODE_ADD("gfxdecode", "palette", bloodbro)
	MCFG_PALETTE_ADD("palette", 2048)
	MCFG_PALETTE_FORMAT(xxxxBBBBGGGGRRRR)

	// sound hardware
	SEIBU_SOUND_SYSTEM_YM3812_RAIDEN_INTERFACE(XTAL_7_15909MHz/2, XTAL_12MHz/12)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( weststry, bloodbro )

	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(weststry_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", bloodbro_state,  irq6_line_hold)

	MCFG_GFXDECODE_MODIFY("gfxdecode", weststry)
	MCFG_PALETTE_MODIFY("palette")
	MCFG_PALETTE_ENTRIES(1024)
	MCFG_PALETTE_FORMAT(xxxxBBBBGGGGRRRR)

	// Bootleg video hardware is non-Seibu 
	MCFG_SCREEN_MODIFY("screen")
	MCFG_SCREEN_UPDATE_DRIVER(bloodbro_state, screen_update_weststry)
	MCFG_DEVICE_REMOVE("crtc")

	// Bootleg sound hardware is close copy of Seibu, but uses different interrupts
	MCFG_SOUND_MODIFY("ymsnd")
	MCFG_YM3812_IRQ_HANDLER(INPUTLINE("audiocpu", INPUT_LINE_NMI))
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( skysmash, bloodbro )

	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(skysmash_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", bloodbro_state,  irq2_line_hold)

	MCFG_SCREEN_MODIFY("screen")
	MCFG_SCREEN_UPDATE_DRIVER(bloodbro_state, screen_update_skysmash)
MACHINE_CONFIG_END

/* ROMs */

ROM_START( bloodbro )
	ROM_REGION( 0x80000, "maincpu", 0 )
	ROM_LOAD16_BYTE( "2j.u021.7n",   0x00001, 0x20000, CRC(c0fdc3e4) SHA1(31968f693de2054a0c8ba50a8d44a371dd9c2848) )
	ROM_LOAD16_BYTE( "1j.u022.8n",   0x00000, 0x20000, CRC(2d7e0fdf) SHA1(8fe22d8a1ef7d562a475a5b6c98303b0cb1af561) )
	ROM_LOAD16_BYTE( "bb_04.u023.7l", 0x40001, 0x20000, CRC(fd951c2c) SHA1(f4031bf303c67c82f2f78f7456f78382d8c1ac85) )
	ROM_LOAD16_BYTE( "bb_03.u024.8l", 0x40000, 0x20000, CRC(18d3c460) SHA1(93b86af1199f0fedeaf1fe64d27ffede4b819e42) )

	ROM_REGION( 0x20000, "audiocpu", 0 )
	ROM_LOAD( "bb_07.u1016.6a",   0x000000, 0x08000, CRC(411b94e8) SHA1(6968441f64212c0935afeca68f07deaadf86d614) )
	ROM_CONTINUE(            0x010000, 0x08000 )
	ROM_COPY( "audiocpu", 0x000000, 0x018000, 0x08000 )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD( "bb_05.u061.6f", 0x00000, 0x10000, CRC(04ba6d19) SHA1(7333075c3323756d51917418b5234d785a9bee00) ) /* characters */
	ROM_LOAD( "bb_06.u063.6d", 0x10000, 0x10000, CRC(7092e35b) SHA1(659d30b2e2fd9ffa34a47e98193c8f0a87ac1315) )

	ROM_REGION( 0x100000, "gfx2", 0 )
	ROM_LOAD( "blood_bros_bk__(c)1990_tad_corp.u064.4d", 0x00000, 0x100000, CRC(1aa87ee6) SHA1(e7843c1e8a0f3a685f0b5d6e3a2eb3176c410847) )  /* Background+Foreground */

	ROM_REGION( 0x100000, "gfx3", 0 )
	ROM_LOAD( "blood_bros_obj__(c)1990_tad_corp.u078.2n", 0x00000, 0x100000, CRC(d27c3952) SHA1(de7306432b682f238b911507ad7aa2fa8acbee80) ) /* sprites */

	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
	ROM_LOAD( "bb_08.u095.5a",  0x00000, 0x20000, CRC(deb1b975) SHA1(08f2e9a0a23171201b71d381d091edcd3787c287) )
ROM_END

ROM_START( bloodbroa )
	ROM_REGION( 0x80000, "maincpu", 0 )
	ROM_LOAD16_BYTE( "2j_a.u021.7n",     0x00001, 0x20000, CRC(e8ca21b8) SHA1(65330368c29ec64ca03124d28a7f8b49d7a15566) )
	ROM_LOAD16_BYTE( "1j_a.u022.8n",     0x00000, 0x20000, CRC(6b28cfc7) SHA1(dedd06cab61381f3e27dc14315f283d707d06bcb) )
	ROM_LOAD16_BYTE( "bb_04.u023.7l", 0x40001, 0x20000, CRC(fd951c2c) SHA1(f4031bf303c67c82f2f78f7456f78382d8c1ac85) )
	ROM_LOAD16_BYTE( "bb_03.u024.8l", 0x40000, 0x20000, CRC(18d3c460) SHA1(93b86af1199f0fedeaf1fe64d27ffede4b819e42) )

	ROM_REGION( 0x20000, "audiocpu", 0 )
	ROM_LOAD( "bb_07.u1016.6a",   0x000000, 0x08000, CRC(411b94e8) SHA1(6968441f64212c0935afeca68f07deaadf86d614) )
	ROM_CONTINUE(            0x010000, 0x08000 )
	ROM_COPY( "audiocpu", 0x000000, 0x018000, 0x08000 )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD( "bb_05.u061.6f", 0x00000, 0x10000, CRC(04ba6d19) SHA1(7333075c3323756d51917418b5234d785a9bee00) ) /* characters */
	ROM_LOAD( "bb_06.u063.6d", 0x10000, 0x10000, CRC(7092e35b) SHA1(659d30b2e2fd9ffa34a47e98193c8f0a87ac1315) )

	ROM_REGION( 0x100000, "gfx2", 0 )
	ROM_LOAD( "blood_bros_bk__(c)1990_tad_corp.u064.4d", 0x00000, 0x100000, CRC(1aa87ee6) SHA1(e7843c1e8a0f3a685f0b5d6e3a2eb3176c410847) )  /* Background+Foreground */

	ROM_REGION( 0x100000, "gfx3", 0 )
	ROM_LOAD( "blood_bros_obj__(c)1990_tad_corp.u078.2n", 0x00000, 0x100000, CRC(d27c3952) SHA1(de7306432b682f238b911507ad7aa2fa8acbee80) ) /* sprites */

	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
	ROM_LOAD( "bb_08.u095.5a",  0x00000, 0x20000, CRC(deb1b975) SHA1(08f2e9a0a23171201b71d381d091edcd3787c287) )
ROM_END

ROM_START( bloodbrob )
	ROM_REGION( 0x80000, "maincpu", 0 )
	ROM_LOAD16_BYTE( "bloodbros02.u021.7n", 0x00001, 0x20000, CRC(204dca6e) SHA1(f04cb2116d699ac2deec2d55597beb5d7b3dc793) )
	ROM_LOAD16_BYTE( "bloodbros01.u022.8n", 0x00000, 0x20000, CRC(ac6719e7) SHA1(bcefd61ed5d2f5eeb4424243f03037c7d123b9f6) )
	ROM_LOAD16_BYTE( "bb_04.u023.7l",       0x40001, 0x20000, CRC(fd951c2c) SHA1(f4031bf303c67c82f2f78f7456f78382d8c1ac85) )
	ROM_LOAD16_BYTE( "bb_03.u024.8l",       0x40000, 0x20000, CRC(18d3c460) SHA1(93b86af1199f0fedeaf1fe64d27ffede4b819e42) )

	ROM_REGION( 0x20000, "audiocpu", 0 )
	ROM_LOAD( "bb_07.u1016.6a",   0x000000, 0x08000, CRC(411b94e8) SHA1(6968441f64212c0935afeca68f07deaadf86d614) )
	ROM_CONTINUE(            0x010000, 0x08000 )
	ROM_COPY( "audiocpu", 0x000000, 0x018000, 0x08000 )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD( "bb_05.u061.6f", 0x00000, 0x10000, CRC(04ba6d19) SHA1(7333075c3323756d51917418b5234d785a9bee00) ) /* characters */
	ROM_LOAD( "bb_06.u063.6d", 0x10000, 0x10000, CRC(7092e35b) SHA1(659d30b2e2fd9ffa34a47e98193c8f0a87ac1315) )

	ROM_REGION( 0x100000, "gfx2", 0 )
	ROM_LOAD( "blood_bros_bk__(c)1990_tad_corp.u064.4d", 0x00000, 0x100000, CRC(1aa87ee6) SHA1(e7843c1e8a0f3a685f0b5d6e3a2eb3176c410847) )  /* Background+Foreground */

	ROM_REGION( 0x100000, "gfx3", 0 )
	ROM_LOAD( "blood_bros_obj__(c)1990_tad_corp.u078.2n", 0x00000, 0x100000, CRC(d27c3952) SHA1(de7306432b682f238b911507ad7aa2fa8acbee80) ) /* sprites */

	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
	ROM_LOAD( "bb_08.u095.5a",  0x00000, 0x20000, CRC(deb1b975) SHA1(08f2e9a0a23171201b71d381d091edcd3787c287) )
ROM_END


ROM_START( weststry )
	ROM_REGION( 0x80000, "maincpu", 0 ) /* 64k for cpu code; based on bloodbrob */
	ROM_LOAD16_BYTE( "ws13.bin",  0x00001, 0x20000, CRC(158e302a) SHA1(52cc1bf526424ff025a6b79f3fc7bba4b9bbfcbb) )
	ROM_LOAD16_BYTE( "ws15.bin",  0x00000, 0x20000, CRC(672e9027) SHA1(71cb9fcef04edb972ba88de45d605dcff539ea2d) )
	ROM_LOAD16_BYTE( "bb_04.bin", 0x40001, 0x20000, CRC(fd951c2c) SHA1(f4031bf303c67c82f2f78f7456f78382d8c1ac85) )
	ROM_LOAD16_BYTE( "bb_03.bin", 0x40000, 0x20000, CRC(18d3c460) SHA1(93b86af1199f0fedeaf1fe64d27ffede4b819e42) )

	ROM_REGION( 0x20000, "audiocpu", 0 )    /* 64k for sound cpu code; based on different revision of original Seibu code */
	ROM_LOAD( "ws17.bin",    0x000000, 0x08000, CRC(e00a8f09) SHA1(e7247ce0ab99d0726f31dee5de5ba33f4ebd183e) )
	ROM_CONTINUE(            0x010000, 0x08000 )
	ROM_COPY( "audiocpu", 0x000000, 0x018000, 0x08000 )

	ROM_REGION( 0x20000, "gfx1", 0 ) // first half of these is blank
	ROM_LOAD( "ws09.bin", 0x00000, 0x08000, CRC(f05b2b3e) SHA1(6570d795d68655ace9668f32dc0bf5c2d2372411) )  /* characters */
	ROM_CONTINUE(         0x00000, 0x08000 )
	ROM_LOAD( "ws11.bin", 0x08000, 0x08000, CRC(2b10e3d2) SHA1(0f5045615b44e2300745fd3afac7f1441352cca5) )
	ROM_CONTINUE(         0x08000, 0x08000 )
	ROM_LOAD( "ws10.bin", 0x10000, 0x08000, CRC(efdf7c82) SHA1(65392697f56473cfe90d9733b9c49f2da6f9b7e6) )
	ROM_CONTINUE(         0x10000, 0x08000 )
	ROM_LOAD( "ws12.bin", 0x18000, 0x08000, CRC(af993578) SHA1(b250b562deeab3bb2c79002e5e1f0b6e17986848) )
	ROM_CONTINUE(         0x18000, 0x08000 )

	ROM_REGION( 0x100000, "gfx2", 0 )
	ROM_LOAD( "ws01.bin", 0x20000, 0x20000, CRC(32bda4bc) SHA1(ed0c0740c7af513b341b2b7ff3e0bf6045e930e9) )  /* Foreground */
	ROM_LOAD( "ws03.bin", 0x60000, 0x20000, CRC(046b51f8) SHA1(25af752caebdec762582fc0130cf14546110bb54) )
	ROM_LOAD( "ws02.bin", 0xa0000, 0x20000, CRC(ed9d682e) SHA1(0f79ea09a7af367d175081f72f2bc94f6caad463) )
	ROM_LOAD( "ws04.bin", 0xe0000, 0x20000, CRC(75f082e5) SHA1(b29f09a3cc9a0ac3f982be3981f5e895050c49e8) )
	ROM_LOAD( "ws05.bin", 0x00000, 0x20000, CRC(007c8dc0) SHA1(f44576da3b89d6a889fdb564825ac6ce3bb4cffe) )  /* Background */
	ROM_LOAD( "ws07.bin", 0x40000, 0x20000, CRC(0f0c8d9a) SHA1(f5fe9b5ee4c8ffd7caf5313d13fb5f6e181ed9b6) )
	ROM_LOAD( "ws06.bin", 0x80000, 0x20000, CRC(459d075e) SHA1(24cd0bffe7c5bbccf653ced0b73579059603d187) )
	ROM_LOAD( "ws08.bin", 0xc0000, 0x20000, CRC(4d6783b3) SHA1(9870fe9570afeff179b6080581fd6bb187898ff0) )

	ROM_REGION( 0x100000, "gfx3", ROMREGION_INVERT )
	ROM_LOAD( "ws25.bin", 0x00000, 0x20000, BAD_DUMP CRC(8092e8e9) SHA1(eabe58ac0f88234b0dddf361f56aad509a83012e) ) /* sprites */
	ROM_LOAD( "ws26.bin", 0x20000, 0x20000, BAD_DUMP CRC(f6a1f42c) SHA1(6d5503e1a9b00104970292d22301ed28893c5223) )
	ROM_LOAD( "ws23.bin", 0x40000, 0x20000, CRC(43d58e24) SHA1(99e255faa9716d9102a1223419084fc209ab4024) )
	ROM_LOAD( "ws24.bin", 0x60000, 0x20000, CRC(20a867ea) SHA1(d3985002931fd4180fc541d61a94371871f3709d) )
	ROM_LOAD( "ws21.bin", 0x80000, 0x20000, CRC(e23d7296) SHA1(33bbced960be22efc7d2681e06a27feba09e0fc0) )
	ROM_LOAD( "ws22.bin", 0xa0000, 0x20000, CRC(7150a060) SHA1(73bdd7d6752f7fe9e23073d835dbc468d57865fa) )
	ROM_LOAD( "ws19.bin", 0xc0000, 0x20000, CRC(c5dd0a96) SHA1(4696ab1b02d40c54a7dacf0bdf90b624b7d6812e) )
	ROM_LOAD( "ws20.bin", 0xe0000, 0x20000, CRC(f1245c16) SHA1(f3941bf5830995f65a5378326fdb72687fbbddcf) )

	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
	ROM_LOAD( "bb_08.bin", 0x00000, 0x20000, CRC(deb1b975) SHA1(08f2e9a0a23171201b71d381d091edcd3787c287) )
ROM_END

ROM_START( skysmash )
	ROM_REGION( 0x80000, "maincpu", 0 )
	ROM_LOAD16_BYTE( "rom5", 0x00000, 0x20000, CRC(867f9897) SHA1(7751f9d03d71bd5db0b82bda6e4d5231a30c1ad0) )
	ROM_LOAD16_BYTE( "rom6", 0x00001, 0x20000, CRC(e9c1d308) SHA1(d7032345b91f87de64ad09ffea49e39b755cac44) )
	ROM_LOAD16_BYTE( "rom7", 0x40000, 0x20000, CRC(d209db4d) SHA1(1cf85d39d12e92c1b97f7e5a148f3ad56cdca963) )
	ROM_LOAD16_BYTE( "rom8", 0x40001, 0x20000, CRC(d3646728) SHA1(898606be662214d2ba99e9a3e3cc0c7e7609a719) )

	ROM_REGION( 0x20000, "audiocpu", 0 )
	ROM_LOAD( "rom2",        0x000000, 0x08000, CRC(75b194cf) SHA1(6aaf36cdab06c0aa5328f5176557387a5d3f7d26) )
	ROM_CONTINUE(            0x010000, 0x08000 )
	ROM_COPY( "audiocpu", 0x000000, 0x018000, 0x08000 )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD( "rom3", 0x00000, 0x10000, CRC(fbb241be) SHA1(cd94c328891538bbd8c062d90a47ddf3d7d05bb0) )  /* characters */
	ROM_LOAD( "rom4", 0x10000, 0x10000, CRC(ad3cde81) SHA1(2bd0c707e5b67d3699a743d989cb5384cbe37ff7) )

	ROM_REGION( 0x100000, "gfx2", 0 )
	ROM_LOAD( "rom9", 0x00000, 0x100000, CRC(b0a5eecf) SHA1(9e8191c7ae4a32dc16aebc37fa942afc531eddd4) ) /* Background + Foreground */

	ROM_REGION( 0x80000, "gfx3", 0 )
	ROM_LOAD( "rom10", 0x00000, 0x080000, CRC(1bbcda5d) SHA1(63915221f70a7dfda6a4d8ac7f5c663c9316610a) )    /* sprites */

	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
	ROM_LOAD( "rom1", 0x00000, 0x20000, CRC(e69986f6) SHA1(de38bf2d5638cb40740882e1abccf7928e43a5a6) )
ROM_END


DRIVER_INIT_MEMBER(bloodbro_state,weststry)
{
	// Patch out jp nz,$3000; no code known to exist at that address
	memory_region *z80_rom = memregion("audiocpu");
	z80_rom->u8(0x160e) = 0x00;
	z80_rom->u8(0x1610) = 0x00;
}


/* Game Drivers */

GAME( 1990, bloodbro, 0,        bloodbro, bloodbro, driver_device, 0, ROT0,   "TAD Corporation", "Blood Bros. (set 1)", MACHINE_NO_COCKTAIL | MACHINE_SUPPORTS_SAVE )
GAME( 1990, bloodbroa,bloodbro, bloodbro, bloodbro, driver_device, 0, ROT0,   "TAD Corporation", "Blood Bros. (set 2)", MACHINE_NO_COCKTAIL | MACHINE_SUPPORTS_SAVE )
GAME( 1990, bloodbrob,bloodbro, bloodbro, bloodbro, driver_device, 0, ROT0,   "TAD Corporation", "Blood Bros. (set 3)", MACHINE_NO_COCKTAIL | MACHINE_SUPPORTS_SAVE )
GAME( 1990, weststry, bloodbro, weststry, weststry, bloodbro_state, weststry, ROT0,   "bootleg (Datsu)", "West Story (bootleg of Blood Bros.)", MACHINE_NO_COCKTAIL | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
GAME( 1990, skysmash, 0,        skysmash, skysmash, driver_device, 0, ROT270, "Nihon System",    "Sky Smasher", MACHINE_SUPPORTS_SAVE )