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

Prebillian        (c) 1986 Taito
Hot Smash         (c) 1987 Taito
Super Qix         (c) 1987 Taito
Perestroika Girls (c) 1994 Promat (hack of Super Qix)

driver by Mirko Buffoni, Nicola Salmoria, Tomasz Slanina

Super Qix is a later revision of the hardware, featuring a bitmap layer that
is not present in the earlier games. It also has two 8910, while the earlier
games have one 8910 + a sample player.

Notes:
- The 8751 ROM, sq07.108, was bad: bit 3 was stuck high. I have recovered it
  by carefully checking the disassembly. There are probably some mistakes.
  Note that that ROM probably came from a bootleg in the first place.

- The MCU sends some ID to the Z80 on startup, but the Z80 happily ignores it.
  This happens in all sets. There appears to be code that would check part of
  the MCU init sequence ($5973 onwards), but it doesn't seem to be called.

- sqixa might be an earlier version because there is a bug with coin lockout:
  it is activated after inesrting 10 coins instead of 9. sqix doesn't have
  that bug and also inverts the coin lockout output.

- Note that the sqixa ROMs probably came from a bootleg board, where the 8751
  MCU was replaced by a model using external ROM (which was bad, and manually
  repaired). Even if it was a bootleg, at this point there is no reason to
  believe the ROMs had been tampered with.

- sqixbl is a bootleg of sqixa, with the MCU removed.

- Prebillian controls: (from the Japanese flyer):
  - pullout plunger for shot power (there's no on-screen power indicator in the game)
  - dial for aiming
  - button (fire M powerup, high score initials)
  They are mapped a bit differently in MAME. BUTTON1 simlates pulling out the
  plunger and releasing it. The plunger strength is controlled by an analog input
  (by default mapped to up/down arrows) and shown on screen. The dial is mapped
  as expected. The button is mapped on BUTTON2. BUTTON3 is also recognized by the
  game when entering initials, but was probably not present in the cabinet.


TODO:
- The MCU simulation in hotsmash is wrong. It's enough to make the game playable
  to a certain degree, but that's all. Also, should there be a timer?

- Dip switches in hotsmash.

- The way we generate NMI in sqix doesn't make much sense, but is a workaround
  for the slow gameplay you would otherwise get. Some interaction with vblank?

- I'm not sure about the NMI ack at 0418 in the original sqix, but the game hangs
  at the end of a game without it. Note that the bootleg replaces that call with
  something else.


Prebillian :
------------

PCB Layout (Prebillian, from The Guru ( http://unemulated.emuunlim.com/ )

 M6100211A
 -------------------------------------------------------------------
 |                    HM50464                                       |
 |  6                 HM50464                                       |
 |  5                 HM50464                               6116    |
 |  4                 HM50464                                       |
 |                                                                  |
 |                                                                  |
 |                                                               J  |
 |                                            68705P5 SW1(8)        |
 |               6264                                            A  |
 |                                              3     SW2(8)        |
 |                                                               M  |
 |                                                                  |
 |                                                               M  |
 |                                                                  |
 |                                   2                           A  |
 |                                                                  |
 |                                   1                              |
 |                                                                  |
 |                                   Z80B            AY-3-8910      |
 | 12MHz                                                            |
 --------------------------------------------------------------------

Notes:
       Vertical Sync: 60Hz
         Horiz. Sync: 15.67kHz
         Z80B Clock : 5.995MHz
     AY-3-8910 Clock: 1.499MHz



Hot (Vs) Smash :
----------------

Dips (not verified):

DSW1 stored @ $f236
76------ coin a
--54---- coin b
----3--- stored @ $f295 , tested @ $2a3b
------1- code @ $03ed, stored @ $f253 (flip screen)

DSW2 stored @ $f237
---4---- code @ $03b4, stored @ $f290
----32-- code @ $03d8, stored @ $f293 (3600/5400/2400/1200  -> bonus  ?)
------10 code @ $03be, stored @ $f291/92 (8,8/0,12/16,6/24,4 -> difficulty ? )

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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "sound/ay8910.h"
#include "sound/samples.h"


extern data8_t *superqix_videoram;
extern data8_t *superqix_bitmapram,*superqix_bitmapram2;
extern int pbillian_show_power;


WRITE8_HANDLER( superqix_videoram_w );
WRITE8_HANDLER( superqix_bitmapram_w );
WRITE8_HANDLER( superqix_bitmapram2_w );
WRITE8_HANDLER( pbillian_0410_w );
WRITE8_HANDLER( superqix_0410_w );

VIDEO_START( pbillian );
VIDEO_UPDATE( pbillian );
VIDEO_START( superqix );
VIDEO_UPDATE( superqix );


/* pbillian sample playback */
static INT16 *samplebuf;

void pbillian_sh_start(void)
{
	UINT8 *src = memory_region(REGION_SOUND1);
	int i;

	/* convert 8-bit unsigned samples to 8-bit signed */
	samplebuf = auto_malloc(memory_region_length(REGION_SOUND1) * 2);
	for (i = 0;i < memory_region_length(REGION_SOUND1);i++)
		samplebuf[i] = (INT8)(src[i] ^ 0x80) * 256;
}

static WRITE8_HANDLER( pbillian_sample_trigger_w )
{
	int start,end;

	start = data << 7;
	/* look for end of sample marker */
	end = start;
	while (end < 0x8000 && samplebuf[end] != (0xff^0x80))
		end++;

	sample_start_raw(0, samplebuf + start, end - start, 5000, 0); // 5khz ?
}



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

Z80 <-> 8751 communication

This is quite hackish, because the communication protocol is not very clear.
Add to that that we are not sure the 8751 is behaving 100% correctly because
the ROM was bad...

The Z80 acts this way:
- wait for 8910 #0 port B, bit 6 to be 0
- write command for MCU to 8910 #1 port B
- read port 0408
- wait for 8910 #0 port B, bit 6 to be 1
- read answer from MCU from 8910 #1 port B
- read port 0408

also, in other places it waits for 8910 #0 port B, bit 7 to be 0

The MCU acts this way:
- write FF to latch
- fiddle with port 1
- wait for IN2 bit 7 to be 1
- read command from latch
- process command
- fiddle with port 1
- write answer to latch
- wait for IN2 bit 7 to be 1

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

static data8_t port1, port3, port3_latch, from_mcu, from_z80, portb;
static int from_mcu_pending, from_z80_pending, invert_coin_lockout;

static READ8_HANDLER( in4_mcu_r )
{
//  logerror("%04x: in4_mcu_r\n",activecpu_get_pc());
	return readinputport(4) | (from_mcu_pending << 6) | (from_z80_pending << 7);
}

static READ8_HANDLER( sqix_from_mcu_r )
{
//  logerror("%04x: read mcu answer (%02x)\n",activecpu_get_pc(),from_mcu);
	return from_mcu;
}

void mcu_acknowledge_callback(int data)
{
	from_z80_pending = 1;
	from_z80 = portb;
//  logerror("Z80->MCU %02x\n",from_z80);
}

static READ8_HANDLER( mcu_acknowledge_r )
{
	timer_set(TIME_NOW, 0, mcu_acknowledge_callback);
	return 0;
}

static WRITE8_HANDLER( sqix_z80_mcu_w )
{
//  logerror("%04x: sqix_z80_mcu_w %02x\n",activecpu_get_pc(),data);
	portb = data;
}

static WRITE8_HANDLER( mcu_p1_w )
{
	switch ((data & 0x0e) >> 1)
	{
		case 0:
			// ???
			break;
		case 1:
			coin_counter_w(0,data & 1);
			break;
		case 2:
			coin_counter_w(1,data & 1);
			break;
		case 3:
			coin_lockout_global_w((data & 1) ^ invert_coin_lockout);
			break;
		case 4:
			flip_screen_set(data & 1);
			break;
		case 5:
			port1 = data;
			if ((port1 & 0x80) == 0)
			{
				port3_latch = port3;
			}
			break;
		case 6:
			from_mcu_pending = 0;	// ????
			break;
		case 7:
			if ((data & 1) == 0)
			{
//              logerror("%04x: MCU -> Z80 %02x\n",activecpu_get_pc(),port3);
				from_mcu = port3_latch;
				from_mcu_pending = 1;
				from_z80_pending = 0;	// ????
			}
			break;
	}
}

static READ8_HANDLER( mcu_p3_r )
{
	if ((port1 & 0x10) == 0)
	{
		return readinputport(0);
	}
	else if ((port1 & 0x20) == 0)
	{
		return readinputport(2) | (from_mcu_pending << 6) | (from_z80_pending << 7);
	}
	else if ((port1 & 0x40) == 0)
	{
//      logerror("%04x: read Z80 command %02x\n",activecpu_get_pc(),from_z80);
		from_z80_pending = 0;
		return from_z80;
	}
	return 0;
}

static WRITE8_HANDLER( mcu_p3_w )
{
	port3 = data;
}


static READ8_HANDLER( nmi_ack_r )
{
	cpunum_set_input_line(0, INPUT_LINE_NMI, CLEAR_LINE);
	return 0;
}

static READ8_HANDLER( bootleg_in0_r )
{
	return BITSWAP8(readinputport(0), 0,1,2,3,4,5,6,7);
}

WRITE8_HANDLER( bootleg_flipscreen_w )
{
	flip_screen_set(~data & 1);
}


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

pbillian / hotsmash MCU simulation

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

static int is_pbillian;

static WRITE8_HANDLER( pbillian_z80_mcu_w )
{
	from_z80 = data;
}

static READ8_HANDLER(pbillian_from_mcu_r)
{
	if (is_pbillian)
	{
		static int curr_player;

		switch (from_z80)
		{
			case 0x01: return readinputport(4 + 2 * curr_player);
			case 0x02: return readinputport(5 + 2 * curr_player);
			case 0x04: return readinputport(0);
			case 0x08: return readinputport(1);
			case 0x80: curr_player = 0; return 0;
			case 0x81: curr_player = 1; return 0;
		}
	}
	else
	{
		static int score[2],game[2];
		static const char *answer = "";
		static int answercounter;
		int points_per_game = ((readinputport(1) & 0x10) >> 4) + 4;

		/*
            When a goal is scored, the Z80 sends a special command - 0x80 or
            0x81, depending on who scored. It expects the MCU to return a few
            special commands, telling it what to do (remove ball, increase
            score etc.)

            0x80 = ?
            0x81 = ?
            0x82 = stop ball
            0x83 = time over
            0x84 = P1 score++
            0x85 = P2 score++
            0x86 = P1 game++
            0x87 = P2 game++
            0x88 = P1 WIN
            0x89 = P2 WIN
            0x8a = restart P1 side
            0x8b = restart P2 side
            0x8c = next game
            0x8d = ?
        */

		switch (from_z80)
		{
			case 0x01:
				if (answercounter)
				{
					answercounter--;
					return readinputport(4);
				}
				if (*answer)
				{
					answercounter = 50;
					return *(answer++);
				}
				else return readinputport(4);

			case 0x02: return readinputport(5);
			case 0x04: return readinputport(0);
			case 0x08: return readinputport(1);
			case 0x20: return 0;	// select player 2?
			case 0x40: score[0] = score[1] = game[0] = game[1] = 0;	return 0; // start game 1 player?
			case 0x41: score[0] = score[1] = game[0] = game[1] = 0;	return 0; // start game 2 players?
			case 0x80:
				score[1]++;
				if (score[1] < points_per_game)
					answer = "\x82\x85\x8a";
				else
				{
					score[0] = score[1] = 0;
					game[1]++;
					if (game[1] < 2)
						answer = "\x82\x87\x8c";
					else
					{
						game[0] = game[1] = 0;
						answer = "\x82\x89\x8c";
					}
				}
				return 0;
			case 0x81:
				score[0]++;
				if (score[0] < points_per_game)
					answer = "\x82\x84\x8b";
				else
				{
					score[0] = score[1] = 0;
					game[0]++;
					if (game[0] < 2)
						answer = "\x82\x86\x8c";
					else
					{
						game[0] = game[1] = 0;
						answer = "\x82\x88\x8c";
					}
				}
				return 0;
//          case 0xf0: return 0;    // resync?
		}
	}

	logerror("408[%x] r at %x\n",from_z80,activecpu_get_pc());
	return 0;
}

static READ8_HANDLER(ay_port_a_r)
{
	/* temp kludge for hotsmash */
	if (activecpu_get_pc() == 0x21a)
		return 0xff;

//  logerror("%04x: ay_port_a_r\n",activecpu_get_pc());
	 /* bits 76------  MCU status bits */
	return (rand()&0xc0)|readinputport(3);
}




static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0xbfff) AM_ROMBANK(1)
	AM_RANGE(0xe000, 0xe0ff) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0xe100, 0xe7ff) AM_RAM
	AM_RANGE(0xe800, 0xefff) AM_READWRITE(MRA8_RAM, superqix_videoram_w) AM_BASE(&superqix_videoram)
	AM_RANGE(0xf000, 0xffff) AM_RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( pbillian_port_map, ADDRESS_SPACE_IO, 8 )
	AM_RANGE(0x0000, 0x01ff) AM_READWRITE(paletteram_r, paletteram_BBGGRRII_w) AM_BASE(&paletteram)
	AM_RANGE(0x0401, 0x0401) AM_READ(AY8910_read_port_0_r)
	AM_RANGE(0x0402, 0x0402) AM_WRITE(AY8910_write_port_0_w)
	AM_RANGE(0x0403, 0x0403) AM_WRITE(AY8910_control_port_0_w)
	AM_RANGE(0x0408, 0x0408) AM_READ(pbillian_from_mcu_r)
	AM_RANGE(0x0408, 0x0408) AM_WRITE(pbillian_z80_mcu_w)
	AM_RANGE(0x0410, 0x0410) AM_WRITE(pbillian_0410_w)
	AM_RANGE(0x0418, 0x0418) AM_READ(MRA8_NOP)  //?
	AM_RANGE(0x0419, 0x0419) AM_WRITE(MWA8_NOP)  //? watchdog ?
	AM_RANGE(0x041a, 0x041a) AM_WRITE(pbillian_sample_trigger_w)
	AM_RANGE(0x041b, 0x041b) AM_READ(MRA8_NOP)  // input related? but probably not used
ADDRESS_MAP_END

static ADDRESS_MAP_START( sqix_port_map, ADDRESS_SPACE_IO, 8 )
	AM_RANGE(0x0000, 0x00ff) AM_READWRITE(paletteram_r, paletteram_BBGGRRII_w) AM_BASE(&paletteram)
	AM_RANGE(0x0401, 0x0401) AM_READ(AY8910_read_port_0_r)
	AM_RANGE(0x0402, 0x0402) AM_WRITE(AY8910_write_port_0_w)
	AM_RANGE(0x0403, 0x0403) AM_WRITE(AY8910_control_port_0_w)
	AM_RANGE(0x0405, 0x0405) AM_READ(AY8910_read_port_1_r)
	AM_RANGE(0x0406, 0x0406) AM_WRITE(AY8910_write_port_1_w)
	AM_RANGE(0x0407, 0x0407) AM_WRITE(AY8910_control_port_1_w)
	AM_RANGE(0x0408, 0x0408) AM_READ(mcu_acknowledge_r)
	AM_RANGE(0x0410, 0x0410) AM_WRITE(superqix_0410_w)	/* ROM bank, NMI enable, tile bank */
	AM_RANGE(0x0418, 0x0418) AM_READ(nmi_ack_r)
	AM_RANGE(0x0800, 0x77ff) AM_READWRITE(MRA8_RAM, superqix_bitmapram_w) AM_BASE(&superqix_bitmapram)
	AM_RANGE(0x8800, 0xf7ff) AM_READWRITE(MRA8_RAM, superqix_bitmapram2_w) AM_BASE(&superqix_bitmapram2)
ADDRESS_MAP_END

static ADDRESS_MAP_START( bootleg_port_map, ADDRESS_SPACE_IO, 8 )
	AM_RANGE(0x0000, 0x00ff) AM_READWRITE(paletteram_r, paletteram_BBGGRRII_w) AM_BASE(&paletteram)
	AM_RANGE(0x0401, 0x0401) AM_READ(AY8910_read_port_0_r)
	AM_RANGE(0x0402, 0x0402) AM_WRITE(AY8910_write_port_0_w)
	AM_RANGE(0x0403, 0x0403) AM_WRITE(AY8910_control_port_0_w)
	AM_RANGE(0x0405, 0x0405) AM_READ(AY8910_read_port_1_r)
	AM_RANGE(0x0406, 0x0406) AM_WRITE(AY8910_write_port_1_w)
	AM_RANGE(0x0407, 0x0407) AM_WRITE(AY8910_control_port_1_w)
	AM_RANGE(0x0408, 0x0408) AM_WRITE(bootleg_flipscreen_w)
	AM_RANGE(0x0410, 0x0410) AM_WRITE(superqix_0410_w)	/* ROM bank, NMI enable, tile bank */
	AM_RANGE(0x0418, 0x0418) AM_READ(input_port_2_r)
	AM_RANGE(0x0800, 0x77ff) AM_READWRITE(MRA8_RAM, superqix_bitmapram_w) AM_BASE(&superqix_bitmapram)
	AM_RANGE(0x8800, 0xf7ff) AM_READWRITE(MRA8_RAM, superqix_bitmapram2_w) AM_BASE(&superqix_bitmapram2)
ADDRESS_MAP_END


/* I8751 memory handlers */
static ADDRESS_MAP_START( mcu_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x0fff) AM_RAM	// AM_ROM
ADDRESS_MAP_END

static ADDRESS_MAP_START( mcu_io_map, ADDRESS_SPACE_IO, 8 )
	AM_RANGE(0x01, 0x01) AM_WRITE(mcu_p1_w)
	AM_RANGE(0x03, 0x03) AM_READWRITE(mcu_p3_r, mcu_p3_w)
ADDRESS_MAP_END



INPUT_PORTS_START( pbillian )
	PORT_START
	PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x38, 0x38, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x18, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x28, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x38, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(    0x40, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x80, 0x80, "Freeze" )
	PORT_DIPSETTING(    0x80, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )

	PORT_START
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x0c, "10/20/300K Points" )
	PORT_DIPSETTING(    0x00, "10/30/500K Points" )
	PORT_DIPSETTING(    0x08, "20/30/400K Points" )
	PORT_DIPSETTING(    0x04, "30/40/500K Points" )
	PORT_DIPNAME( 0x30, 0x10, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x30, DEF_STR( Very_Hard ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 )	// high score initials
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 )	// fire (M powerup) + high score initials
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_COCKTAIL	// high score initials
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL	// fire (M powerup) + high score initials
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL )	// mcu status (pending mcu->z80)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )	// mcu status (pending z80->mcu)

	PORT_START
	PORT_BIT( 0x3f, 0x00, IPT_PADDLE_V  ) PORT_MINMAX(0,0x3f) PORT_SENSITIVITY(30) PORT_KEYDELTA(3) PORT_CENTERDELTA(0) PORT_REVERSE
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON1 )

	PORT_START
	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(20) PORT_KEYDELTA(10)

	PORT_START
	PORT_BIT( 0x3f, 0x00, IPT_PADDLE_V  ) PORT_MINMAX(0,0x3f) PORT_SENSITIVITY(30) PORT_KEYDELTA(3) PORT_CENTERDELTA(0) PORT_REVERSE  PORT_COCKTAIL
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL

	PORT_START
	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(20) PORT_KEYDELTA(10) PORT_COCKTAIL
INPUT_PORTS_END

INPUT_PORTS_START( hotsmash )
	PORT_START
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_2C ) )

	PORT_START
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, "1" )
	PORT_DIPSETTING(    0x01, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x03, "4" )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x00, "1" )
	PORT_DIPSETTING(    0x04, "2" )
	PORT_DIPSETTING(    0x08, "3" )
	PORT_DIPSETTING(    0x0c, "4" )
	PORT_DIPNAME( 0x10, 0x10, "Points per game" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPSETTING(    0x10, "5" )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN2 )//$49c
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 )//$42d
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )

	PORT_START

	PORT_START
	PORT_BIT( 0x7f, 0x38, IPT_PADDLE ) PORT_MINMAX(0x10,0x7f) PORT_SENSITIVITY(30) PORT_KEYDELTA(5) PORT_CENTERDELTA(0) PORT_REVERSE

	PORT_START
	PORT_BIT( 0x7f, 0x38, IPT_PADDLE ) PORT_MINMAX(0x10,0x7f) PORT_SENSITIVITY(30) PORT_KEYDELTA(5) PORT_CENTERDELTA(0) PORT_REVERSE PORT_PLAYER(2)

INPUT_PORTS_END


INPUT_PORTS_START( superqix )
	PORT_START	/* DSW1 */
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Freeze" )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(    0x08, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ))
	PORT_DIPSETTING(    0x20, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ))
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_2C ) )

	PORT_START	/* DSW2 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Difficulty ) )
	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, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x08, "20000 50000" )
	PORT_DIPSETTING(    0x0c, "30000 100000" )
	PORT_DIPSETTING(    0x04, "50000 100000" )
	PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x20, "2" )
	PORT_DIPSETTING(    0x30, "3" )
	PORT_DIPSETTING(    0x10, "4" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0xc0, 0xc0, "Fill Area" )
	PORT_DIPSETTING(    0x80, "70%" )
	PORT_DIPSETTING(    0xc0, "75%" )
	PORT_DIPSETTING(    0x40, "80%" )
	PORT_DIPSETTING(    0x00, "85%" )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE1 )	// doesn't work in bootleg
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )	// Z80 status (pending z80->mcu)

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_VBLANK )	/* ??? */
	PORT_SERVICE( 0x80, IP_ACTIVE_LOW )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL )	// mcu status (pending mcu->z80)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )	// mcu status (pending z80->mcu)
INPUT_PORTS_END



static struct GfxLayout pbillian_charlayout =
{
	8,8,
	0x800,	/* doesn't use the whole ROM space */
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8
};

static struct GfxLayout sqix_charlayout =
{
	8,8,
	RGN_FRAC(1,1),
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8
};

static struct GfxLayout spritelayout =
{
	16,16,
	RGN_FRAC(1,1),
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4,
			32*8+0*4, 32*8+1*4, 32*8+2*4, 32*8+3*4, 32*8+4*4, 32*8+5*4, 32*8+6*4, 32*8+7*4 },
	{ 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 struct GfxDecodeInfo pbillian_gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &pbillian_charlayout, 16*16, 16 },
	{ REGION_GFX1, 0, &spritelayout,            0, 16 },
	{ -1 }
};

static struct GfxDecodeInfo sqix_gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0x00000, &sqix_charlayout,   0, 16 },	/* Chars */
	{ REGION_GFX2, 0x00000, &sqix_charlayout,   0, 16 },	/* Background tiles */
	{ REGION_GFX3, 0x00000, &spritelayout,      0, 16 },	/* Sprites */
	{ -1 }
};



static struct Samplesinterface custom_interface =
{
	1,
	NULL,
	pbillian_sh_start
};

static struct AY8910interface pbillian_ay8910_interface =
{
	ay_port_a_r,					/* port Aread */
	input_port_2_r					/* port Bread */
};

static struct AY8910interface sqix_ay8910_interface_1 =
{
	input_port_3_r,	/* port Aread */
	in4_mcu_r,		/* port Bread */
};

static struct AY8910interface sqix_ay8910_interface_2 =
{
	input_port_1_r,	/* port Aread */
	sqix_from_mcu_r,		/* port Bread */
	0,								/* port Awrite */
	sqix_z80_mcu_w				/* port Bwrite */
};

static struct AY8910interface bootleg_ay8910_interface_1 =
{
	input_port_3_r,	/* port Aread */
	input_port_4_r	/* port Bread */
};

static struct AY8910interface bootleg_ay8910_interface_2 =
{
	input_port_1_r,	/* port Aread */
	bootleg_in0_r	/* port Bread */
};



INTERRUPT_GEN( sqix_interrupt )
{
	/* highly suspicious... */
	if (cpu_getiloops() <= 3)
		nmi_line_assert();
}

INTERRUPT_GEN( bootleg_interrupt )
{
	/* highly suspicious... */
	if (cpu_getiloops() <= 3)
		nmi_line_pulse();
}



static MACHINE_DRIVER_START( pbillian )
	MDRV_CPU_ADD(Z80,12000000/2)		 /* 6 MHz */
	MDRV_CPU_PROGRAM_MAP(main_map,0)
	MDRV_CPU_IO_MAP(pbillian_port_map,0)
	MDRV_CPU_VBLANK_INT(nmi_line_pulse,1)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(256, 256)
	MDRV_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
	MDRV_GFXDECODE(pbillian_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(512)

	MDRV_VIDEO_START(pbillian)
	MDRV_VIDEO_UPDATE(pbillian)

	MDRV_SPEAKER_STANDARD_MONO("mono")

	MDRV_SOUND_ADD(AY8910, 12000000/8)
	MDRV_SOUND_CONFIG(pbillian_ay8910_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.30)

	MDRV_SOUND_ADD(SAMPLES, 0)
	MDRV_SOUND_CONFIG(custom_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( sqix )

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, 12000000/2)	/* 6 MHz */
	MDRV_CPU_PROGRAM_MAP(main_map,0)
	MDRV_CPU_IO_MAP(sqix_port_map,0)
	MDRV_CPU_VBLANK_INT(sqix_interrupt,6)	/* ??? */

	MDRV_CPU_ADD(I8751, 12000000/3)	/* ??? */
	MDRV_CPU_PROGRAM_MAP(mcu_map,0)
	MDRV_CPU_IO_MAP(mcu_io_map,0)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)
	MDRV_INTERLEAVE(500)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
	MDRV_GFXDECODE(sqix_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(256)

	MDRV_VIDEO_START(superqix)
	MDRV_VIDEO_UPDATE(superqix)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")

	MDRV_SOUND_ADD(AY8910, 12000000/8)
	MDRV_SOUND_CONFIG(sqix_ay8910_interface_1)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	MDRV_SOUND_ADD(AY8910, 12000000/8)
	MDRV_SOUND_CONFIG(sqix_ay8910_interface_2)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( sqixbl )

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, 12000000/2)	/* 6 MHz */
	MDRV_CPU_PROGRAM_MAP(main_map,0)
	MDRV_CPU_IO_MAP(bootleg_port_map,0)
	MDRV_CPU_VBLANK_INT(bootleg_interrupt,6)	/* ??? */

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
	MDRV_GFXDECODE(sqix_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(256)

	MDRV_VIDEO_START(superqix)
	MDRV_VIDEO_UPDATE(superqix)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")

	MDRV_SOUND_ADD(AY8910, 12000000/8)
	MDRV_SOUND_CONFIG(bootleg_ay8910_interface_1)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	MDRV_SOUND_ADD(AY8910, 12000000/8)
	MDRV_SOUND_CONFIG(bootleg_ay8910_interface_2)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_DRIVER_END



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

  Game driver(s)

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

ROM_START( pbillian )
	ROM_REGION( 0x018000, REGION_CPU1, 0 )
	ROM_LOAD( "1.6c",  0x00000, 0x08000, CRC(d379fe23) SHA1(e147a9151b1cdeacb126d9713687bd0aa92980ac) )
	ROM_LOAD( "2.6d",  0x14000, 0x04000, CRC(1af522bc) SHA1(83e002dc831bfcedbd7096b350c9b34418b79674) )

	ROM_REGION( 0x0800, REGION_CPU2, 0 )
	ROM_LOAD( "pbillian.mcu", 0x0000, 0x0800, NO_DUMP )

	ROM_REGION( 0x8000, REGION_SOUND1, 0 )
	ROM_LOAD( "3.7j",  0x0000, 0x08000, CRC(3f9bc7f1) SHA1(0b0c2ec3bea6a7f3fc6c0c8b750318f3f9ec3d1f) )

	ROM_REGION( 0x018000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "4.1n",  0x00000, 0x08000, CRC(9c08a072) SHA1(25f31fcf72216cf42528b07ad8c09113aa69861a) )
	ROM_LOAD( "5.1r",  0x08000, 0x08000, CRC(2dd5b83f) SHA1(b05e3a008050359d0207757b9cbd8cee87abc697) )
	ROM_LOAD( "6.1t",  0x10000, 0x08000, CRC(33b855b0) SHA1(5a1df4f82fc0d6f78883b759fd61f395942645eb) )
ROM_END

ROM_START( hotsmash )
	ROM_REGION( 0x018000, REGION_CPU1, 0 )
	ROM_LOAD( "b18-04",  0x00000, 0x08000, CRC(981bde2c) SHA1(ebcc901a036cde16b33d534d423500d74523b781) )

	ROM_REGION( 0x0800, REGION_CPU2, 0 )
	ROM_LOAD( "b18-06.mcu", 0x0000, 0x0800, NO_DUMP )

	ROM_REGION( 0x8000, REGION_SOUND1, 0 )
	ROM_LOAD( "b18-05",  0x0000, 0x08000, CRC(dab5e718) SHA1(6cf6486f283f5177dfdc657b1627fbfa3f0743e8) )

	ROM_REGION( 0x018000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "b18-01",  0x00000, 0x08000, CRC(870a4c04) SHA1(a029108bcda40755c8320d2ee297f42d816aa7c0) )
	ROM_LOAD( "b18-02",  0x08000, 0x08000, CRC(4e625cac) SHA1(2c21b32240eaada9a5f909a2ec5b335372c8c994) )
	ROM_LOAD( "b18-03",  0x14000, 0x04000, CRC(1c82717d) SHA1(6942c8877e24ac51ed71036e771a1655d82f3491) )
ROM_END

ROM_START( sqix )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )	/* 64k for code */
	ROM_LOAD( "b03-01-1",     0x00000, 0x08000, CRC(ad614117) SHA1(c461f00a2aecde1bc3860c15a3c31091b14665a2) )
	ROM_LOAD( "b03-02",       0x10000, 0x10000, CRC(9c23cb64) SHA1(7e04cb18cabdc0031621162cbc228cd95875a022) )

	ROM_REGION( 0x1000, REGION_CPU2, 0 )	/* I8751 code */
	ROM_LOAD( "sq07.108",     0x00000, 0x1000, BAD_DUMP CRC(8be4d2a8) SHA1(a0c72cd87b2cddc67070b0a533fca111dbb9a984) )	// from sqixa

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-04",       0x00000, 0x08000, CRC(f815ef45) SHA1(4189d455b6ccf3ae922d410fb624c4665203febf) )

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-03",       0x00000, 0x10000, CRC(6e8b6a67) SHA1(c71117cc880a124c46397c446d1edc1cbf681200) )
	ROM_LOAD( "b03-06",       0x10000, 0x10000, CRC(38154517) SHA1(703ad4cfe54a4786c67aedcca5998b57f39fd857) )

	ROM_REGION( 0x10000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-05",       0x00000, 0x10000, CRC(df326540) SHA1(1fe025edcd38202e24c4e1005f478b6a88533453) )
ROM_END

/* this was probably a bootleg */
ROM_START( sqixa )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )	/* 64k for code */
	ROM_LOAD( "sq01.97",      0x00000, 0x08000, CRC(0888b7de) SHA1(de3e4637436de185f43d2ad4186d4cfdcd4d33d9) )
	ROM_LOAD( "b03-02",       0x10000, 0x10000, CRC(9c23cb64) SHA1(7e04cb18cabdc0031621162cbc228cd95875a022) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* I8751 code */
	ROM_LOAD( "sq07.108",     0x00000, 0x1000, BAD_DUMP CRC(8be4d2a8) SHA1(a0c72cd87b2cddc67070b0a533fca111dbb9a984) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-04",       0x00000, 0x08000, CRC(f815ef45) SHA1(4189d455b6ccf3ae922d410fb624c4665203febf) )

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-03",       0x00000, 0x10000, CRC(6e8b6a67) SHA1(c71117cc880a124c46397c446d1edc1cbf681200) )
	ROM_LOAD( "b03-06",       0x10000, 0x10000, CRC(38154517) SHA1(703ad4cfe54a4786c67aedcca5998b57f39fd857) )

	ROM_REGION( 0x10000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-05",       0x00000, 0x10000, CRC(df326540) SHA1(1fe025edcd38202e24c4e1005f478b6a88533453) )
ROM_END

ROM_START( sqixbl )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )	/* 64k for code */
	ROM_LOAD( "cpu.2",        0x00000, 0x08000, CRC(682e28e3) SHA1(fe9221d26d7397be5a0fc8fdc51672b5924f3cf2) )
	ROM_LOAD( "b03-02",       0x10000, 0x10000, CRC(9c23cb64) SHA1(7e04cb18cabdc0031621162cbc228cd95875a022) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-04",       0x00000, 0x08000, CRC(f815ef45) SHA1(4189d455b6ccf3ae922d410fb624c4665203febf) )

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-03",       0x00000, 0x10000, CRC(6e8b6a67) SHA1(c71117cc880a124c46397c446d1edc1cbf681200) )
	ROM_LOAD( "b03-06",       0x10000, 0x10000, CRC(38154517) SHA1(703ad4cfe54a4786c67aedcca5998b57f39fd857) )

	ROM_REGION( 0x10000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "b03-05",       0x00000, 0x10000, CRC(df326540) SHA1(1fe025edcd38202e24c4e1005f478b6a88533453) )
ROM_END

ROM_START( perestrf )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )	/* 64k for code */
	/* 0x8000 - 0x10000 in the rom is empty anyway */
	ROM_LOAD( "rom1.bin",        0x00000, 0x20000, CRC(0cbf96c1) SHA1(cf2b1367887d1b8812a56aa55593e742578f220c) )

	ROM_REGION( 0x10000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "rom4.bin",       0x00000, 0x10000, CRC(c56122a8) SHA1(1d24b2f0358e14aca5681f92175869224584a6ea) ) /* both halves identical */

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "rom2.bin",       0x00000, 0x20000, CRC(36f93701) SHA1(452cb23efd955c6c155cef2b1b650e253e195738) )

	ROM_REGION( 0x10000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "rom3.bin",       0x00000, 0x10000, CRC(00c91d5a) SHA1(fdde56d3689a47e6bfb296e442207b93b887ec7a) )
ROM_END

ROM_START( perestro )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )	/* 64k for code */
	/* 0x8000 - 0x10000 in the rom is empty anyway */
	ROM_LOAD( "rom1.bin",        0x00000, 0x20000, CRC(0cbf96c1) SHA1(cf2b1367887d1b8812a56aa55593e742578f220c) )

	ROM_REGION( 0x10000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "rom4.bin",       0x00000, 0x10000, CRC(c56122a8) SHA1(1d24b2f0358e14aca5681f92175869224584a6ea) ) /* both halves identical */

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "rom2.bin",       0x00000, 0x20000, CRC(36f93701) SHA1(452cb23efd955c6c155cef2b1b650e253e195738) )

	ROM_REGION( 0x10000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "rom3a.bin",       0x00000, 0x10000, CRC(7a2a563f) SHA1(e3654091b858cc80ec1991281447fc3622a0d4f9) )
ROM_END



static DRIVER_INIT( pbillian )
{
	pbillian_show_power = 1;
	is_pbillian=1;
}

static DRIVER_INIT( hotsmash )
{
	pbillian_show_power = 0;
	is_pbillian=0;
}

static DRIVER_INIT( sqix )
{
	invert_coin_lockout = 1;
}

static DRIVER_INIT( sqixa )
{
	invert_coin_lockout = 0;
}

static DRIVER_INIT( perestro )
{
	data8_t *src;
	int len;
	data8_t temp[16];
	int i,j;

	/* decrypt program code; the address lines are shuffled around in a non-trivial way */
	src = memory_region(REGION_CPU1);
	len = memory_region_length(REGION_CPU1);
	for (i = 0;i < len;i += 16)
	{
		memcpy(temp,&src[i],16);
		for (j = 0;j < 16;j++)
		{
			static int convtable[16] =
			{
				0xc, 0x9, 0xb, 0xa,
				0x8, 0xd, 0xf, 0xe,
				0x4, 0x1, 0x3, 0x2,
				0x0, 0x5, 0x7, 0x6
			};

			src[i+j] = temp[convtable[j]];
		}
	}

	/* decrypt gfx ROMs; simple bit swap on the address lines */
	src = memory_region(REGION_GFX1);
	len = memory_region_length(REGION_GFX1);
	for (i = 0;i < len;i += 16)
	{
		memcpy(temp,&src[i],16);
		for (j = 0;j < 16;j++)
		{
			src[i+j] = temp[BITSWAP8(j,7,6,5,4,3,2,0,1)];
		}
	}

	src = memory_region(REGION_GFX2);
	len = memory_region_length(REGION_GFX2);
	for (i = 0;i < len;i += 16)
	{
		memcpy(temp,&src[i],16);
		for (j = 0;j < 16;j++)
		{
			src[i+j] = temp[BITSWAP8(j,7,6,5,4,0,1,2,3)];
		}
	}

	src = memory_region(REGION_GFX3);
	len = memory_region_length(REGION_GFX3);
	for (i = 0;i < len;i += 16)
	{
		memcpy(temp,&src[i],16);
		for (j = 0;j < 16;j++)
		{
			src[i+j] = temp[BITSWAP8(j,7,6,5,4,1,0,3,2)];
		}
	}
}



GAME( 1986, pbillian, 0,        pbillian, pbillian, pbillian, ROT0,  "Taito", "Prebillian" )
GAMEX(1987, hotsmash, 0,        pbillian, hotsmash, hotsmash, ROT90, "Taito", "Vs. Hot Smash", GAME_NOT_WORKING|GAME_UNEMULATED_PROTECTION )
GAME( 1987, sqix,     0,        sqix,     superqix, sqix,     ROT90, "Taito", "Super Qix (set 1)" )
GAME( 1987, sqixa,    sqix,     sqix,     superqix, sqixa,    ROT90, "Taito", "Super Qix (set 2)" )
GAME( 1987, sqixbl,   sqix,     sqixbl,   superqix, 0,        ROT90, "bootleg", "Super Qix (bootleg)" )
GAME( 1994, perestro, 0,        sqixbl,   superqix, perestro, ROT90, "Promat", "Perestroika Girls" )
GAME( 1993, perestrf, perestro, sqixbl,   superqix, perestro, ROT90, "Promat (Fuuki license)", "Perestroika Girls (Fuuki license)" )
