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/* Aquarium (c)1996 Excellent Systems */

/* the hardware is similar to gcpinbal.c, probably should merge it at some point */

/*

AQUARIUM
EXCELLENT SYSTEMS
ES-9206
                                   3
                      14.318MHz                 7
       ES 9207
                                        8
       ES 9303
                                       ES 9208  2

AQUARF1              68000-16            6

                                                 SW1
   YM2151  M6295  4  32MHz               1
                     Z80-6  5                    SW2Q


To Do:
- Merge with gcpinbal.c (and clean up gcpinbal.c)

Notes:
- A bug in the program code causes the OKI to be reset on the very
  first coin inserted.
- The current dump is Japanese. The game also includes English text,
  so it may have been released overseas too. Use cheat/debugger and
  set RAM[0x000a5c / 2] to 1 to be able to change the game to English.

*/


#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/m68000/m68000.h"
#include "sound/2151intf.h"
#include "sound/okim6295.h"
#include "includes/aquarium.h"


READ16_MEMBER(aquarium_state::aquarium_coins_r)
{
	int data;
	data = (ioport("SYSTEM")->read() & 0x7fff);
	data |= m_aquarium_snd_ack;
	m_aquarium_snd_ack = 0;

	return data;
}

WRITE8_MEMBER(aquarium_state::aquarium_snd_ack_w)
{
	m_aquarium_snd_ack = 0x8000;
}

WRITE16_MEMBER(aquarium_state::aquarium_sound_w)
{
//  popmessage("sound write %04x",data);

	soundlatch_byte_w(space, 1, data & 0xff);
	m_audiocpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE );
}

WRITE8_MEMBER(aquarium_state::aquarium_z80_bank_w)
{
	membank("bank1")->set_entry(data & 0x07);
}

UINT8 aquarium_state::aquarium_snd_bitswap( UINT8 scrambled_data )
{
	UINT8 data = 0;

	data |= ((scrambled_data & 0x01) << 7);
	data |= ((scrambled_data & 0x02) << 5);
	data |= ((scrambled_data & 0x04) << 3);
	data |= ((scrambled_data & 0x08) << 1);
	data |= ((scrambled_data & 0x10) >> 1);
	data |= ((scrambled_data & 0x20) >> 3);
	data |= ((scrambled_data & 0x40) >> 5);
	data |= ((scrambled_data & 0x80) >> 7);

	return data;
}

READ8_MEMBER(aquarium_state::aquarium_oki_r)
{
	okim6295_device *oki = machine().device<okim6295_device>("oki");
	return aquarium_snd_bitswap(oki->read(space, offset));
}

WRITE8_MEMBER(aquarium_state::aquarium_oki_w)
{
	logerror("%s:Writing %04x to the OKI M6295\n", machine().describe_context(), aquarium_snd_bitswap(data));
	okim6295_device *oki = machine().device<okim6295_device>("oki");
	oki->write(space, offset, (aquarium_snd_bitswap(data)));
}




static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, aquarium_state )
	AM_RANGE(0x000000, 0x07ffff) AM_ROM
	AM_RANGE(0xc00000, 0xc00fff) AM_RAM_WRITE(aquarium_mid_videoram_w) AM_SHARE("mid_videoram")
	AM_RANGE(0xc01000, 0xc01fff) AM_RAM_WRITE(aquarium_bak_videoram_w) AM_SHARE("bak_videoram")
	AM_RANGE(0xc02000, 0xc03fff) AM_RAM_WRITE(aquarium_txt_videoram_w) AM_SHARE("txt_videoram")
	AM_RANGE(0xc80000, 0xc81fff) AM_RAM AM_SHARE("spriteram")
	AM_RANGE(0xd00000, 0xd00fff) AM_RAM_WRITE(paletteram_RRRRGGGGBBBBRGBx_word_w) AM_SHARE("paletteram")
	AM_RANGE(0xd80014, 0xd8001f) AM_WRITEONLY AM_SHARE("scroll")
	AM_RANGE(0xd80068, 0xd80069) AM_WRITENOP        /* probably not used */
	AM_RANGE(0xd80080, 0xd80081) AM_READ_PORT("DSW")
	AM_RANGE(0xd80082, 0xd80083) AM_READNOP /* stored but not read back ? check code at 0x01f440 */
	AM_RANGE(0xd80084, 0xd80085) AM_READ_PORT("INPUTS")
	AM_RANGE(0xd80086, 0xd80087) AM_READ(aquarium_coins_r)
	AM_RANGE(0xd80088, 0xd80089) AM_WRITENOP        /* ?? video related */
	AM_RANGE(0xd8008a, 0xd8008b) AM_WRITE(aquarium_sound_w)
	AM_RANGE(0xff0000, 0xffffff) AM_RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( snd_map, AS_PROGRAM, 8, aquarium_state )
	AM_RANGE(0x0000, 0x3fff) AM_ROM
	AM_RANGE(0x7800, 0x7fff) AM_RAM
	AM_RANGE(0x8000, 0xffff) AM_ROMBANK("bank1")
ADDRESS_MAP_END

static ADDRESS_MAP_START( snd_portmap, AS_IO, 8, aquarium_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0x01) AM_DEVREADWRITE("ymsnd", ym2151_device, read, write)
	AM_RANGE(0x02, 0x02) AM_READWRITE(aquarium_oki_r, aquarium_oki_w)
	AM_RANGE(0x04, 0x04) AM_READ(soundlatch_byte_r)
	AM_RANGE(0x06, 0x06) AM_WRITE(aquarium_snd_ack_w)
	AM_RANGE(0x08, 0x08) AM_WRITE(aquarium_z80_bank_w)
ADDRESS_MAP_END

static INPUT_PORTS_START( aquarium )
	PORT_START("DSW")
	PORT_DIPNAME( 0x0003, 0x0003, DEF_STR( Difficulty ) )           PORT_DIPLOCATION("SW1:1,2")
	PORT_DIPSETTING(      0x0002, DEF_STR( Easy ) )
	PORT_DIPSETTING(      0x0003, DEF_STR( Normal ) )
	PORT_DIPSETTING(      0x0001, DEF_STR( Hard ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x000c, 0x000c, "Winning Rounds (Player VS CPU)" )    PORT_DIPLOCATION("SW1:3,4")
	PORT_DIPSETTING(      0x000c, "1/1" )
	PORT_DIPSETTING(      0x0008, "2/3" )
	PORT_DIPSETTING(      0x0004, "3/5" )
//  PORT_DIPSETTING(      0x0000, "1/1" )                   /* Not used or listed in manual */
	PORT_DIPNAME( 0x0030, 0x0030, "Winning Rounds (Player VS Player)" ) PORT_DIPLOCATION("SW1:5,6")
	PORT_DIPSETTING(      0x0030, "1/1" )
	PORT_DIPSETTING(      0x0020, "2/3" )
	PORT_DIPSETTING(      0x0010, "3/5" )
//  PORT_DIPSETTING(      0x0000, "1/1" )                   /* Not used or listed in manual */
	PORT_DIPUNUSED_DIPLOC( 0x0040, 0x0040, "SW1:7" )            /* Listed in the manual as always OFF */
	PORT_DIPUNUSED_DIPLOC( 0x0080, 0x0080, "SW1:8" )            /* Listed in the manual as always OFF */
	PORT_DIPNAME( 0x0700, 0x0700, DEF_STR( Coinage ) )          PORT_DIPLOCATION("SW2:1,2,3")
	PORT_DIPSETTING(      0x0000, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(      0x0100, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(      0x0200, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(      0x0300, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(      0x0700, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(      0x0600, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(      0x0500, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(      0x0400, DEF_STR( 1C_4C ) )
	PORT_DIPUNUSED_DIPLOC( 0x0800, 0x0800, "SW2:4" )            /* Listed in the manual as always OFF */
	PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Flip_Screen ) )          PORT_DIPLOCATION("SW2:5")
	PORT_DIPSETTING(      0x1000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Demo_Sounds ) )          PORT_DIPLOCATION("SW2:6")
	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x2000, DEF_STR( On ) )
	PORT_DIPUNUSED_DIPLOC( 0x4000, 0x4000, "SW2:7" )            /* Listed in the manual as always OFF */
	PORT_DIPUNUSED_DIPLOC( 0x8000, 0x8000, "SW2:8" )            /* Listed in the manual as always OFF */

	PORT_START("INPUTS")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )  /* used in testmode, but not in game? */
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNKNOWN )  /* used in testmode, but not in game? */
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START("SYSTEM")
	PORT_BIT( 0x00ff, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_TILT )
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_SERVICE( 0x1000, IP_ACTIVE_LOW )
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN )  /* sound status */
INPUT_PORTS_END

static const gfx_layout char5bpplayout =
{
	16,16,  /* 16*16 characters */
	RGN_FRAC(1,2),
	5,  /* 4 bits per pixel */
	{  RGN_FRAC(1,2), 0, 1, 2, 3 },
	{ 2*4, 3*4, 0*4, 1*4, 6*4, 7*4, 4*4, 5*4, 2*4+32, 3*4+32, 0*4+32, 1*4+32, 6*4+32, 7*4+32, 4*4+32, 5*4+32 },
	{ 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64, 8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
	128*8   /* every sprite takes 128 consecutive bytes */
};

static const gfx_layout char_8x8_layout =
{
	8,8,    /* 8*8 characters */
	RGN_FRAC(1,1),
	4,  /* 4 bits per pixel */
	{ 0, 1, 2, 3 },
	{ 2*4, 3*4, 0*4, 1*4, 6*4, 7*4, 4*4, 5*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8    /* every sprite takes 32 consecutive bytes */
};

static const gfx_layout tilelayout =
{
	16,16,  /* 16*16 sprites */
	RGN_FRAC(1,1),
	4,  /* 4 bits per pixel */
	{ 48, 16, 32, 0 },
	{ 8, 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64, 8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
	128*8   /* every sprite takes 128 consecutive bytes */
};

DRIVER_INIT_MEMBER(aquarium_state,aquarium)
{
	UINT8 *Z80 = machine().root_device().memregion("audiocpu")->base();

	/* The BG tiles are 5bpp, this rearranges the data from
	   the roms containing the 1bpp data so we can decode it
	   correctly */
	UINT8 *DAT2 = machine().root_device().memregion("gfx1")->base() + 0x080000;
	UINT8 *DAT = machine().root_device().memregion("user1")->base();
	int len = 0x0200000;

	for (len = 0; len < 0x020000; len++)
	{
		DAT2[len * 4 + 1] =  (DAT[len] & 0x80) << 0;
		DAT2[len * 4 + 1] |= (DAT[len] & 0x40) >> 3;
		DAT2[len * 4 + 0] =  (DAT[len] & 0x20) << 2;
		DAT2[len * 4 + 0] |= (DAT[len] & 0x10) >> 1;
		DAT2[len * 4 + 3] =  (DAT[len] & 0x08) << 4;
		DAT2[len * 4 + 3] |= (DAT[len] & 0x04) << 1;
		DAT2[len * 4 + 2] =  (DAT[len] & 0x02) << 6;
		DAT2[len * 4 + 2] |= (DAT[len] & 0x01) << 3;
	}

	DAT2 = machine().root_device().memregion("gfx4")->base() + 0x080000;
	DAT = machine().root_device().memregion("user2")->base();

	for (len = 0; len < 0x020000; len++)
	{
		DAT2[len * 4 + 1] =  (DAT[len] & 0x80) << 0;
		DAT2[len * 4 + 1] |= (DAT[len] & 0x40) >> 3;
		DAT2[len * 4 + 0] =  (DAT[len] & 0x20) << 2;
		DAT2[len * 4 + 0] |= (DAT[len] & 0x10) >> 1;
		DAT2[len * 4 + 3] =  (DAT[len] & 0x08) << 4;
		DAT2[len * 4 + 3] |= (DAT[len] & 0x04) << 1;
		DAT2[len * 4 + 2] =  (DAT[len] & 0x02) << 6;
		DAT2[len * 4 + 2] |= (DAT[len] & 0x01) << 3;
	}

	/* configure and set up the sound bank */
	machine().root_device().membank("bank1")->configure_entries(0, 7, &Z80[0x18000], 0x8000);
	machine().root_device().membank("bank1")->set_entry(1);
}


static GFXDECODE_START( aquarium )
	GFXDECODE_ENTRY( "gfx3", 0, tilelayout,       0x300, 32 )
	GFXDECODE_ENTRY( "gfx1", 0, char5bpplayout,   0x400, 32 )
	GFXDECODE_ENTRY( "gfx2", 0, char_8x8_layout,  0x200, 32 )
	GFXDECODE_ENTRY( "gfx4", 0, char5bpplayout,   0x400, 32 )
GFXDECODE_END

void aquarium_state::machine_start()
{
	m_audiocpu = machine().device<cpu_device>("audiocpu");

	save_item(NAME(m_aquarium_snd_ack));
}

void aquarium_state::machine_reset()
{
	m_aquarium_snd_ack = 0;
}

static MACHINE_CONFIG_START( aquarium, aquarium_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M68000, XTAL_32MHz/2) // clock not verified on pcb
	MCFG_CPU_PROGRAM_MAP(main_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", aquarium_state,  irq1_line_hold)

	MCFG_CPU_ADD("audiocpu", Z80, XTAL_32MHz/6) // clock not verified on pcb
	MCFG_CPU_PROGRAM_MAP(snd_map)
	MCFG_CPU_IO_MAP(snd_portmap)


	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MCFG_SCREEN_SIZE(64*8, 64*8)
	MCFG_SCREEN_VISIBLE_AREA(2*8, 42*8-1, 2*8, 34*8-1)
	MCFG_SCREEN_UPDATE_DRIVER(aquarium_state, screen_update_aquarium)

	MCFG_GFXDECODE(aquarium)
	MCFG_PALETTE_LENGTH(0x1000/2)


	/* sound hardware */
	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MCFG_YM2151_ADD("ymsnd", XTAL_14_31818MHz/4) // clock not verified on pcb
	MCFG_YM2151_IRQ_HANDLER(INPUTLINE("audiocpu", 0))
	MCFG_SOUND_ROUTE(0, "lspeaker", 0.45)
	MCFG_SOUND_ROUTE(1, "rspeaker", 0.45)

	MCFG_OKIM6295_ADD("oki", 1122000, OKIM6295_PIN7_HIGH) // clock frequency & pin 7 not verified
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.47)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.47)
MACHINE_CONFIG_END

ROM_START( aquarium )
	ROM_REGION( 0x080000, "maincpu", 0 )     /* 68000 code */
	ROM_LOAD16_WORD_SWAP( "aquar3",  0x000000, 0x080000, CRC(344509a1) SHA1(9deb610732dee5066b3225cd7b1929b767579235) )

	ROM_REGION( 0x40000, "audiocpu", 0 ) /* z80 (sound) code */
	ROM_LOAD( "aquar5",  0x000000, 0x40000, CRC(fa555be1) SHA1(07236f2b2ba67e92984b9ddf4a8154221d535245) )

	ROM_REGION( 0x100000, "gfx1", 0 ) /* BG Tiles */
	ROM_LOAD( "aquar1",      0x000000, 0x080000, CRC(575df6ac) SHA1(071394273e512666fe124facdd8591a767ad0819) ) // 4bpp
	/* data is expanded here from USER1 */
	ROM_REGION( 0x100000, "user1", 0 ) /* BG Tiles */
	ROM_LOAD( "aquar6",      0x000000, 0x020000, CRC(9065b146) SHA1(befc218bbcd63453ea7eb8f976796d36f2b2d552) ) // 1bpp

	ROM_REGION( 0x100000, "gfx4", 0 ) /* BG Tiles */
	ROM_LOAD( "aquar8",      0x000000, 0x080000, CRC(915520c4) SHA1(308207cb20f1ed6df365710c808644a6e4f07614) ) // 4bpp
	/* data is expanded here from USER2 */
	ROM_REGION( 0x100000, "user2", 0 ) /* BG Tiles */
	ROM_LOAD( "aquar7",      0x000000, 0x020000, CRC(b96b2b82) SHA1(2b719d0c185d1eca4cd9ea66bed7842b74062288) ) // 1bpp

	ROM_REGION( 0x060000, "gfx2", 0 ) /* FG Tiles */
	ROM_LOAD( "aquar2",   0x000000, 0x020000, CRC(aa071b05) SHA1(517415bfd8e4dd51c6eb03a25c706f8613d34a09) )

	ROM_REGION( 0x200000, "gfx3", 0 ) /* Sprites? */
	ROM_LOAD( "aquarf1",     0x000000, 0x0100000, CRC(14758b3c) SHA1(b372ccb42acb55a3dd15352a9d4ed576878a6731) )

	ROM_REGION( 0x100000, "oki", 0 ) /* Samples */
	ROM_LOAD( "aquar4",  0x000000, 0x80000, CRC(9a4af531) SHA1(bb201b7a6c9fd5924a0d79090257efffd8d4aba1) )
ROM_END

GAME( 1996, aquarium, 0, aquarium, aquarium, aquarium_state, aquarium, ROT0, "Excellent System", "Aquarium (Japan)", GAME_SUPPORTS_SAVE | GAME_NO_COCKTAIL )