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

    Sega Z80-3D system

    driver by Alex Pasadyn, Howie Cohen, Frank Palazzolo, Ernesto Corvi,
    and Aaron Giles

    Games supported:
        * Turbo
        * Subroc 3D
        * Buck Rogers: Planet of Zoom

**************************************************************************
    TURBO
**************************************************************************

    Memory Map:  ( * not complete * )

    Address Range:  R/W:     Function:
    --------------------------------------------------------------------------
    0000 - 5fff     R        Program ROM
    a000 - a0ff     W        Sprite RAM
    a800 - a803     W        Lamps / Coin Meters
    b000 - b1ff     R/W      Collision RAM
    e000 - e7ff     R/W      character RAM
    f000 - f7ff     R/W      RAM
    f202                     coinage 2
    f205                     coinage 1
    f800 - f803     R/W      road drawing
    f900 - f903     R/W      road drawing
    fa00 - fa03     R/W      sound
    fb00 - fb03     R/W      x,DS2,x,x
    fc00 - fc01     R        DS1,x
    fc00 - fc01     W        score
    fd00            R        Coin Inputs, etc.
    fe00            R        DS3,x

    Switch settings:
    Notes:
        1) Facing the CPU board, with the two large IDC connectors at
           the top of the board, and the large and small IDC
           connectors at the bottom, DIP switch #1 is upper right DIP
           switch, DIP switch #2 is the DIP switch to the right of it.

        2) Facing the Sound board, with the IDC connector at the
           bottom of the board, DIP switch #3 (4 bank) can be seen.
    ----------------------------------------------------------------------------

    Option     (DIP Swtich #1) | SW1 | SW2 | SW3 | SW4 | SW5 | SW6 | SW7 | SW8 |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    1 Car On Extended Play     | ON  | ON  |     |     |     |     |     |     |
    2 Car On Extended Play     | OFF | ON  |     |     |     |     |     |     |
    3 Car On Extended Play     | ON  | OFF |     |     |     |     |     |     |
    4 Car On Extended Play     | OFF | OFF |     |     |     |     |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Game Time Adjustable       |     |     | ON  |     |     |     |     |     |
    Game Time Fixed (55 Sec.)  |     |     | OFF |     |     |     |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Hard Game Difficulty       |     |     |     | ON  |     |     |     |     |
    Easy Game Difficulty       |     |     |     | OFF |     |     |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Normal Game Mode           |     |     |     |     | ON  |     |     |     |
    No Collisions (cheat)      |     |     |     |     | OFF |     |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Initial Entry Off (?)      |     |     |     |     |     | ON  |     |     |
    Initial Entry On  (?)      |     |     |     |     |     | OFF |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Not Used                   |     |     |     |     |     |     |  X  |  X  |
    ---------------------------------------------------------------------------

    Option     (DIP Swtich #2) | SW1 | SW2 | SW3 | SW4 | SW5 | SW6 | SW7 | SW8 |
    --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    60 Seconds Game Time       | ON  | ON  |     |     |     |     |     |     |
    70 Seconds Game Time       | OFF | ON  |     |     |     |     |     |     |
    80 Seconds Game Time       | ON  | OFF |     |     |     |     |     |     |
    90 Seconds Game Time       | OFF | OFF |     |     |     |     |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Slot 1   1 Coin  1 Credit  |     |     | ON  | ON  | ON  |     |     |     |
    Slot 1   1 Coin  2 Credits |     |     | OFF | ON  | ON  |     |     |     |
    Slot 1   1 Coin  3 Credits |     |     | ON  | OFF | ON  |     |     |     |
    Slot 1   1 Coin  6 Credits |     |     | OFF | OFF | ON  |     |     |     |
    Slot 1   2 Coins 1 Credit  |     |     | ON  | ON  | OFF |     |     |     |
    Slot 1   3 Coins 1 Credit  |     |     | OFF | ON  | OFF |     |     |     |
    Slot 1   4 Coins 1 Credit  |     |     | ON  | OFF | OFF |     |     |     |
    Slot 1   1 Coin  1 Credit  |     |     | OFF | OFF | OFF |     |     |     |
     --------------------------|-----|-----|-----|-----|-----|-----|-----|-----|
    Slot 2   1 Coin  1 Credit  |     |     |     |     |     | ON  | ON  | ON  |
    Slot 2   1 Coin  2 Credits |     |     |     |     |     | OFF | ON  | ON  |
    Slot 2   1 Coin  3 Credits |     |     |     |     |     | ON  | OFF | ON  |
    Slot 2   1 Coin  6 Credits |     |     |     |     |     | OFF | OFF | ON  |
    Slot 2   2 Coins 1 Credit  |     |     |     |     |     | ON  | ON  | OFF |
    Slot 2   3 Coins 1 Credit  |     |     |     |     |     | OFF | ON  | OFF |
    Slot 2   4 Coins 1 Credit  |     |     |     |     |     | ON  | OFF | OFF |
    Slot 2   1 Coins 1 Credit  |     |     |     |     |     | OFF | OFF | OFF |
    ---------------------------------------------------------------------------

    Option     (DIP Swtich #3) | SW1 | SW2 | SW3 | SW4 |
     --------------------------|-----|-----|-----|-----|
    Not Used                   |  X  |  X  |     |     |
     --------------------------|-----|-----|-----|-----|
    Digital (LED) Tachometer   |     |     | ON  |     |
    Analog (Meter) Tachometer  |     |     | OFF |     |
     --------------------------|-----|-----|-----|-----|
    Cockpit Sound System       |     |     |     | ON  |
    Upright Sound System       |     |     |     | OFF |
    ---------------------------------------------------

    Here is a complete list of the ROMs:

    Turbo ROMLIST - Frank Palazzolo
    Name     Loc             Function
    -----------------------------------------------------------------------------
    Images Acquired:
    EPR1262,3,4  IC76, IC89, IC103
    EPR1363,4,5
    EPR15xx             Program ROMS
    EPR1244             Character Data 1
    EPR1245             Character Data 2
    EPR-1125            Road ROMS
    EPR-1126
    EPR-1127
    EPR-1238
    EPR-1239
    EPR-1240
    EPR-1241
    EPR-1242
    EPR-1243
    EPR1246-1258        Sprite ROMS
    EPR1288-1300

    PR-1114     IC13    Color 1 (road, etc.)
    PR-1115     IC18    Road gfx
    PR-1116     IC20    Crash (collision detection?)
    PR-1117     IC21    Color 2 (road, etc.)
    PR-1118     IC99    256x4 Character Color PROM
    PR-1119     IC50    512x8 Vertical Timing PROM
    PR-1120     IC62    Horizontal Timing PROM
    PR-1121     IC29    Color PROM
    PR-1122     IC11    Pattern 1
    PR-1123     IC21    Pattern 2

    PA-06R      IC22    Mathbox Timing PAL
    PA-06L      IC90    Address Decode PAL

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

#include "driver.h"
#include "machine/8255ppi.h"
#include "turbo.h"
#include "machine/segacrpt.h"
#include "sound/samples.h"

#include "turbo.lh"
#include "subroc3d.lh"
#include "buckrog.lh"



/*************************************
 *
 *  Constants
 *
 *************************************/

#define MASTER_CLOCK		(19968000)

#define PIXEL_CLOCK			(MASTER_CLOCK/4*TURBO_X_SCALE)

#define HTOTAL				(320*TURBO_X_SCALE)
#define HBEND				(0)
#define HBSTART				(256*TURBO_X_SCALE)

#define VTOTAL				(264)
#define VBEND				(0)
#define VBSTART				(224)



static READ8_HANDLER( turbo_analog_r );



/*************************************
 *
 *  Machine init
 *
 *************************************/

static MACHINE_RESET( buckrog )
{
	turbo_state *state = machine->driver_data;
	state->buckrog_command = 0x00;
}



/*************************************
 *
 *  Turbo 8255 PPI handling
 *
 *************************************/

/*
    chip index:
        0 = IC75 - CPU Board, Sheet 6, D7
        1 = IC32 - CPU Board, Sheet 6, D6
        2 = IC123 - CPU Board, Sheet 6, D4
        3 = IC6 - CPU Board, Sheet 5, D7
*/

static WRITE8_HANDLER( turbo_ppi0a_w )
{
	/* bit0-7 = 0PA0-7 */
	turbo_state *state = Machine->driver_data;
	state->turbo_opa = data;
}


static WRITE8_HANDLER( turbo_ppi0b_w )
{
	/* bit0-7 = 0PB0-7 */
	turbo_state *state = Machine->driver_data;
	state->turbo_opb = data;
}


static WRITE8_HANDLER( turbo_ppi0c_w )
{
	/* bit0-7 = 0PC0-7 */
	turbo_state *state = Machine->driver_data;
	state->turbo_opc = data;
}


static WRITE8_HANDLER( turbo_ppi1a_w )
{
	/* bit0-7 = 1PA0-7 */
	turbo_state *state = Machine->driver_data;
	state->turbo_ipa = data;
}


static WRITE8_HANDLER( turbo_ppi1b_w )
{
	/* bit0-7 = 1PB0-7 */
	turbo_state *state = Machine->driver_data;
	state->turbo_ipb = data;
}


static WRITE8_HANDLER( turbo_ppi1c_w )
{
	/* bit0-7 = 1PC0-7 */
	turbo_state *state = Machine->driver_data;
	state->turbo_ipc = data;
}


static WRITE8_HANDLER( turbo_ppi3c_w )
{
	/* bit 0-3 = PLA0-3 */
	/* bit 4-6 = COL0-2 */
	/* bit   7 = n/c */
	turbo_state *state = Machine->driver_data;
	state->turbo_fbpla = data & 0x0f;
	state->turbo_fbcol = (data >> 4) & 0x07;
}



/*************************************
 *
 *  Subroc 3D PPI handling
 *
 *************************************/

/*
    chip index:
        0 = IC117 - CPU Board, Sheet 3, A6
        1 = IC119 - CPU Board, Sheet 3, A5
*/

static WRITE8_HANDLER( subroc3d_ppi0a_w )
{
	/* bit 0-3 = PLY0-3 */
	/* bit 4-7 = n/c */
	turbo_state *state = Machine->driver_data;
	state->subroc3d_ply = data & 0x0f;
}


static WRITE8_HANDLER( subroc3d_ppi0c_w )
{
	/* bit 0-3 = COL0-3 */
	turbo_state *state = Machine->driver_data;
	state->subroc3d_col = data & 0x0f;
}


static WRITE8_HANDLER( subroc3d_ppi0b_w )
{
	/* bit 0 = COM1 (COIN METER 1) */
	/* bit 1 = COM2 (COIN METER 2) */
	/* bit 2 = STLA (START LAMP) */
	/* bit 3 = NOUSE (n/c) */
	/* bit 4 = FLIP (not really flip, just offset) */
	turbo_state *state = Machine->driver_data;
	coin_counter_w(0, data & 0x01);
	coin_counter_w(1, data & 0x02);
	set_led_status(0, data & 0x04);
	state->subroc3d_flip = (data >> 4) & 1;
}



/*************************************
 *
 *  Buck Rogers PPI handling
 *
 *************************************/

static WRITE8_HANDLER( buckrog_ppi0a_w )
{
	/* bit 0-7 = data to be read on the /IOREQ */
	turbo_state *state = Machine->driver_data;
	state->buckrog_command = data;
}


static WRITE8_HANDLER( buckrog_ppi0b_w )
{
	/* bit 0-5 = MOV0-5 */
	/* bit 6-7 = n/c */
	turbo_state *state = Machine->driver_data;
	state->buckrog_mov = data & 0x3f;
}


static WRITE8_HANDLER( buckrog_ppi0c_w )
{
	/* bit 0-2 = FCHG0 */
	/* bit 3-5 = n/c */
	/* bit   6 = /IOREQ on the 2nd CPU */
	/* bit   7 = /INT on the 2nd CPU */
	turbo_state *state = Machine->driver_data;
	state->buckrog_fchg = data & 0x07;
	cpunum_set_input_line(1, 0, (data & 0x80) ? CLEAR_LINE : ASSERT_LINE);
}


static WRITE8_HANDLER( buckrog_ppi1c_w )
{
	/* bit 0-2 = OBCH0-2 */
	/* bit   3 = n/c */
	/* bit   4 = COM1 (COIN METER 1) */
	/* bit   5 = COM2 (COIN METER 2) */
	/* bit   6 = STLA (START LAMP) */
	/* bit   7 = NOUSE (BODY SONIC) */
	turbo_state *state = Machine->driver_data;
	state->buckrog_obch = data & 0x07;
	coin_counter_w(0, data & 0x10);
	coin_counter_w(1, data & 0x20);
	set_led_status(0, data & 0x40);
}



/*************************************
 *
 *  8279 display/keyboard driver
 *
 *************************************/

static void update_outputs(i8279_state *chip, UINT16 which)
{
	static const UINT8 ls48_map[16] =
		{ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7c,0x07,0x7f,0x67,0x58,0x4c,0x62,0x69,0x78,0x00 };
	int i;

	/* update the items in the bitmask */
	for (i = 0; i < 16; i++)
		if (which & (1 << i))
		{
			int val;

			val = chip->ram[i] & 0x0f;
			if (chip->inhibit & 0x01)
				val = chip->clear & 0x0f;
			output_set_digit_value(i * 2 + 0, ls48_map[val]);

			val = chip->ram[i] >> 4;
			if (chip->inhibit & 0x02)
				val = chip->clear >> 4;
			output_set_digit_value(i * 2 + 1, ls48_map[val]);
		}
}


static READ8_HANDLER( turbo_8279_r )
{
	turbo_state *state = Machine->driver_data;
	i8279_state *chip = &state->i8279;
	UINT8 result = 0xff;
	UINT8 addr;

	/* read data */
	if ((offset & 1) == 0)
	{
		switch (chip->command & 0xe0)
		{
			/* read sensor RAM */
			case 0x40:
				result = ~readinputport(1);  /* DSW 1 - inverted! */
				break;

			/* read display RAM */
			case 0x60:

				/* set the value of the corresponding outputs */
				addr = chip->command & 0x0f;
				result = chip->ram[addr];

				/* handle autoincrement */
				if (chip->command & 0x10)
					chip->command = (chip->command & 0xf0) | ((addr + 1) & 0x0f);
				break;
		}
	}

	/* read status word */
	else
	{
		logerror("read 0xfc%02x\n", offset);
		result = 0x10;
	}
	return result;
}


static WRITE8_HANDLER( turbo_8279_w )
{
	turbo_state *state = Machine->driver_data;
	i8279_state *chip = &state->i8279;
	UINT8 addr;

	/* write data */
	if ((offset & 1) == 0)
	{
		switch (chip->command & 0xe0)
		{
			/* write display RAM */
			case 0x80:

				/* set the value of the corresponding outputs */
				addr = chip->command & 0x0f;
				if (!(chip->inhibit & 0x04))
					chip->ram[addr] = (chip->ram[addr] & 0xf0) | (data & 0x0f);
				if (!(chip->inhibit & 0x08))
					chip->ram[addr] = (chip->ram[addr] & 0x0f) | (data & 0xf0);
				update_outputs(chip, 1 << addr);

				/* handle autoincrement */
				if (chip->command & 0x10)
					chip->command = (chip->command & 0xf0) | ((addr + 1) & 0x0f);
				break;
		}
	}

	/* write command */
	else
	{
		chip->command = data;

		switch (data & 0xe0)
		{
			/* command 0: set mode */
			/*
                Display modes:

                00 = 8 x 8-bit character display -- left entry
                01 = 16 x 8-bit character display -- left entry
                10 = 8 x 8-bit character display -- right entry
                11 = 16 x 8-bit character display -- right entry

                Keyboard modes:

                000 = Encoded scan keyboard -- 2 key lockout
                001 = Decoded scan keyboard -- 2 key lockout
                010 = Encoded scan keyboard -- N-key rollover
                011 = Decoded scan keyboard -- N-key rollover
                100 = Encoded scan sensor matrix
                101 = Decoded scan sensor matrix
                110 = Strobed input, encoded display scan
                111 = Strobed input, decoded display scan
            */
			case 0x00:
				logerror("turbo_8279: display mode = %d, keyboard mode = %d\n", (data >> 3) & 3, data & 7);
				chip->mode = data & 0x1f;
				break;

			/* command 1: program clock */
			case 0x20:
				logerror("turbo_8279: clock prescaler set to %02X\n", data & 0x1f);
				chip->prescale = data & 0x1f;
				break;

			/* command 2: read FIFO/sensor RAM */
			/* command 3: read display RAM */
			/* command 4: write display RAM */
			case 0x40:
			case 0x60:
			case 0x80:
				break;

			/* command 5: display write inhibit/blanking */
			case 0xa0:
				chip->inhibit = data & 0x0f;
				update_outputs(chip, ~0);
				logerror("turbo_8279: clock prescaler set to %02X\n", data & 0x1f);
				break;

			/* command 6: clear */
			case 0xc0:
				chip->clear = (data & 0x08) ? ((data & 0x04) ? 0xff : 0x20) : 0x00;
				if (data & 0x11)
					memset(chip->ram, chip->clear, sizeof(chip->ram));
				break;

			/* command 7: end interrupt/error mode set */
			case 0xe0:
				break;
		}
	}
}



/*************************************
 *
 *  Misc Turbo inputs/outputs
 *
 *************************************/

static READ8_HANDLER( turbo_collision_r )
{
	turbo_state *state = Machine->driver_data;
	video_screen_update_partial(0, video_screen_get_vpos(0));
	return readinputport(3) | (state->turbo_collision & 15);
}


static WRITE8_HANDLER( turbo_collision_clear_w )
{
	turbo_state *state = Machine->driver_data;
	video_screen_update_partial(0, video_screen_get_vpos(0));
	state->turbo_collision = 0;
}


static READ8_HANDLER( turbo_analog_r )
{
	turbo_state *state = Machine->driver_data;
	return readinputport(4) - state->turbo_last_analog;
}


static WRITE8_HANDLER( turbo_analog_reset_w )
{
	turbo_state *state = Machine->driver_data;
	state->turbo_last_analog = readinputport(4);
}


static WRITE8_HANDLER( turbo_coin_and_lamp_w )
{
	switch (offset & 7)
	{
		case 0:
			coin_counter_w(0, data & 1);
			break;
		case 1:
			coin_counter_w(1, data & 1);
			break;
		case 3:
			set_led_status(0, data & 1);
			break;
	}
}



/*************************************
 *
 *  Misc Buck Rogers inputs/outputs
 *
 *************************************/

static READ8_HANDLER( buckrog_cpu2_command_r )
{
	/* assert ACK */
	turbo_state *state = Machine->driver_data;
	ppi8255_set_portC(0, 0x00);
	return state->buckrog_command;
}


static READ8_HANDLER( buckrog_port_2_r )
{
	int inp1 = readinputport(2);
	int inp2 = readinputport(3);

	return  (((inp2 >> 6) & 1) << 7) |
			(((inp2 >> 4) & 1) << 6) |
			(((inp2 >> 3) & 1) << 5) |
			(((inp2 >> 0) & 1) << 4) |
			(((inp1 >> 6) & 1) << 3) |
			(((inp1 >> 4) & 1) << 2) |
			(((inp1 >> 3) & 1) << 1) |
			(((inp1 >> 0) & 1) << 0);
}


static READ8_HANDLER( buckrog_port_3_r )
{
	int inp1 = readinputport(2);
	int inp2 = readinputport(3);

	return  (((inp2 >> 7) & 1) << 7) |
			(((inp2 >> 5) & 1) << 6) |
			(((inp2 >> 2) & 1) << 5) |
			(((inp2 >> 1) & 1) << 4) |
			(((inp1 >> 7) & 1) << 3) |
			(((inp1 >> 5) & 1) << 2) |
			(((inp1 >> 2) & 1) << 1) |
			(((inp1 >> 1) & 1) << 0);
}


static TIMER_CALLBACK( delayed_ppi8255_w )
{
    ppi8255_0_w(param >> 8, param & 0xff);
}


static WRITE8_HANDLER( buckrog_ppi8255_0_w )
{
	/* the port C handshaking signals control the sub CPU IRQ, */
	/* so we have to sync whenever we access this PPI */
	timer_call_after_resynch(NULL, ((offset & 3) << 8) | (data & 0xff), delayed_ppi8255_w);
}



/*************************************
 *
 *  Turbo CPU memory handlers
 *
 *************************************/

static ADDRESS_MAP_START( turbo_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x5fff) AM_ROM
	AM_RANGE(0xa000, 0xa0ff) AM_MIRROR(0x0700) AM_MASK(0x0f7) AM_RAM AM_BASE_MEMBER(turbo_state, spriteram)
	AM_RANGE(0xa800, 0xa807) AM_MIRROR(0x07f8) AM_WRITE(turbo_coin_and_lamp_w)
	AM_RANGE(0xb000, 0xb3ff) AM_MIRROR(0x0400) AM_RAM AM_BASE_MEMBER(turbo_state, sprite_position)
	AM_RANGE(0xb800, 0xbfff) AM_WRITE(turbo_analog_reset_w)
	AM_RANGE(0xe000, 0xe7ff) AM_READWRITE(MRA8_RAM, turbo_videoram_w) AM_BASE_MEMBER(turbo_state, videoram)
	AM_RANGE(0xe800, 0xefff) AM_WRITE(turbo_collision_clear_w)
	AM_RANGE(0xf000, 0xf7ff) AM_RAM
	AM_RANGE(0xf800, 0xf803) AM_MIRROR(0x00fc) AM_READWRITE(ppi8255_0_r, ppi8255_0_w)
	AM_RANGE(0xf900, 0xf903) AM_MIRROR(0x00fc) AM_READWRITE(ppi8255_1_r, ppi8255_1_w)
	AM_RANGE(0xfa00, 0xfa03) AM_MIRROR(0x00fc) AM_READWRITE(ppi8255_2_r, ppi8255_2_w)
	AM_RANGE(0xfb00, 0xfb03) AM_MIRROR(0x00fc) AM_READWRITE(ppi8255_3_r, ppi8255_3_w)
	AM_RANGE(0xfc00, 0xfc01) AM_MIRROR(0x00fe) AM_READWRITE(turbo_8279_r, turbo_8279_w)
	AM_RANGE(0xfd00, 0xfdff) AM_READ(input_port_0_r)
	AM_RANGE(0xfe00, 0xfeff) AM_READ(turbo_collision_r)
ADDRESS_MAP_END



/*************************************
 *
 *  Subroc3D CPU memory handlers
 *
 *************************************/

static ADDRESS_MAP_START( subroc3d_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x9fff) AM_ROM
	AM_RANGE(0xa000, 0xa3ff) AM_RAM AM_BASE_MEMBER(turbo_state, sprite_position)	// CONT RAM
	AM_RANGE(0xa400, 0xa7ff) AM_RAM AM_BASE_MEMBER(turbo_state, spriteram)			// CONT RAM
	AM_RANGE(0xa800, 0xa800) AM_MIRROR(0x07fc) AM_READ(input_port_0_r)				// INPUT 253
	AM_RANGE(0xa801, 0xa801) AM_MIRROR(0x07fc) AM_READ(input_port_1_r)				// INPUT 253
	AM_RANGE(0xa802, 0xa802) AM_MIRROR(0x07fc) AM_READ(input_port_2_r)				// INPUT 253
	AM_RANGE(0xa803, 0xa803) AM_MIRROR(0x07fc) AM_READ(input_port_3_r)				// INPUT 253
	AM_RANGE(0xb000, 0xb7ff) AM_RAM 												// SCRATCH
	AM_RANGE(0xb800, 0xbfff) 														// HANDLE CL
	AM_RANGE(0xe000, 0xe7ff) AM_READWRITE(MRA8_RAM, turbo_videoram_w) AM_BASE_MEMBER(turbo_state, videoram)	// FIX PAGE
	AM_RANGE(0xe800, 0xe803) AM_MIRROR(0x07fc) AM_READWRITE(ppi8255_0_r, ppi8255_0_w)
	AM_RANGE(0xf000, 0xf003) AM_MIRROR(0x07fc) AM_READWRITE(ppi8255_1_r, ppi8255_1_w)
	AM_RANGE(0xf800, 0xf801) AM_MIRROR(0x07fe) AM_READWRITE(turbo_8279_r, turbo_8279_w)
ADDRESS_MAP_END



/*************************************
 *
 *  Buck Rogers CPU memory handlers
 *
 *************************************/

static ADDRESS_MAP_START( buckrog_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0xbfff) AM_ROM
	AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(MRA8_RAM, turbo_videoram_w) AM_BASE_MEMBER(turbo_state, videoram)		// FIX PAGE
	AM_RANGE(0xc800, 0xc803) AM_MIRROR(0x07fc) AM_READWRITE(ppi8255_0_r, buckrog_ppi8255_0_w)	// 8255
	AM_RANGE(0xd000, 0xd003) AM_MIRROR(0x07fc) AM_READWRITE(ppi8255_1_r, ppi8255_1_w)			// 8255
	AM_RANGE(0xd800, 0xd801) AM_MIRROR(0x07fe) AM_READWRITE(turbo_8279_r, turbo_8279_w)			// 8279
	AM_RANGE(0xe000, 0xe3ff) AM_RAM AM_BASE_MEMBER(turbo_state, sprite_position)				// CONT RAM
	AM_RANGE(0xe400, 0xe7ff) AM_RAM AM_BASE_MEMBER(turbo_state, spriteram)						// CONT RAM
	AM_RANGE(0xe800, 0xe800) AM_MIRROR(0x07fc) AM_READ(input_port_0_r)							// INPUT
	AM_RANGE(0xe801, 0xe801) AM_MIRROR(0x07fc) AM_READ(input_port_1_r)
	AM_RANGE(0xe802, 0xe802) AM_MIRROR(0x07fc) AM_READ(buckrog_port_2_r)
	AM_RANGE(0xe803, 0xe803) AM_MIRROR(0x07fc) AM_READ(buckrog_port_3_r)
	AM_RANGE(0xf000, 0xf000)
	AM_RANGE(0xf800, 0xffff) AM_RAM													// SCRATCH
ADDRESS_MAP_END


static ADDRESS_MAP_START( buckrog_cpu2_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x1fff) AM_ROM
	AM_RANGE(0x0000, 0xdfff) AM_WRITE(buckrog_bitmap_w)
	AM_RANGE(0xe000, 0xe7ff) AM_MIRROR(0x1800) AM_RAM
ADDRESS_MAP_END


static ADDRESS_MAP_START( buckrog_cpu2_portmap, ADDRESS_SPACE_IO, 8 )
	ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
	AM_RANGE(0x00, 0xff) AM_READ(buckrog_cpu2_command_r)
ADDRESS_MAP_END



/*************************************
 *
 *  Port definitions
 *
 *************************************/

static INPUT_PORTS_START( turbo )
	PORT_START		/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 )				/* ACCEL B */
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )				/* ACCEL A */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_TOGGLE	/* SHIFT */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_SERVICE_NO_TOGGLE( 0x10, IP_ACTIVE_LOW )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* DSW 1 */
	PORT_DIPNAME( 0x03, 0x03, "Car On Extended Play" ) PORT_DIPLOCATION("SW1:1,2")
	PORT_DIPSETTING(    0x00, "1" )
	PORT_DIPSETTING(    0x01, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x03, "4" )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Game_Time ) ) PORT_DIPLOCATION("SW1:3")
	PORT_DIPSETTING(    0x04, "Fixed (55 sec)" )
	PORT_DIPSETTING(    0x00, "Adjustable" )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(    0x08, DEF_STR( Easy ))
	PORT_DIPSETTING(    0x00, DEF_STR( Hard ))
	PORT_DIPNAME( 0x10, 0x10, "Game Mode" ) PORT_DIPLOCATION("SW1:5")
	PORT_DIPSETTING(    0x00, "No Collisions (cheat)" )
	PORT_DIPSETTING(    0x10, DEF_STR( Normal ) )
	PORT_DIPNAME( 0x20, 0x20, "Initial Entry" ) PORT_DIPLOCATION("SW1:6")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ))
	PORT_DIPSETTING(    0x20, DEF_STR( On ))
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:7")
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:8")
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START	/* DSW 2 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Game_Time ) ) PORT_DIPLOCATION("SW2:1,2")
	PORT_DIPSETTING(    0x00, "60 seconds" )
	PORT_DIPSETTING(    0x01, "70 seconds" )
	PORT_DIPSETTING(    0x02, "80 seconds" )
	PORT_DIPSETTING(    0x03, "90 seconds" )
	PORT_DIPNAME( 0x1c, 0x1c, DEF_STR( Coin_B )) PORT_DIPLOCATION("SW2:3,4,5")
	PORT_DIPSETTING(	0x18, DEF_STR( 4C_1C ))
	PORT_DIPSETTING(	0x14, DEF_STR( 3C_1C ))
	PORT_DIPSETTING(	0x10, DEF_STR( 2C_1C ))
/*  PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ))*/
	PORT_DIPSETTING(	0x1c, DEF_STR( 1C_1C ))
	PORT_DIPSETTING(	0x04, DEF_STR( 1C_2C ))
	PORT_DIPSETTING(	0x08, DEF_STR( 1C_3C ))
	PORT_DIPSETTING(	0x0c, DEF_STR( 1C_6C ))
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coin_A )) PORT_DIPLOCATION("SW2:6,7,8")
	PORT_DIPSETTING(	0xc0, DEF_STR( 4C_1C ))
	PORT_DIPSETTING(	0xa0, DEF_STR( 3C_1C ))
	PORT_DIPSETTING(	0x80, DEF_STR( 2C_1C ))
/*  PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ))*/
	PORT_DIPSETTING(	0xe0, DEF_STR( 1C_1C ))
	PORT_DIPSETTING(	0x20, DEF_STR( 1C_2C ))
	PORT_DIPSETTING(	0x40, DEF_STR( 1C_3C ))
	PORT_DIPSETTING(	0x60, DEF_STR( 1C_6C ))

	PORT_START	/* Collision and DSW 3 */
	PORT_BIT( 0x0f,     0x00, IPT_SPECIAL )	/* Merged with collision bits */
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW3:1")
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW3:2")
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Tachometer" ) PORT_DIPLOCATION("SW3:3")
	PORT_DIPSETTING(	0x40, "Analog (Meter)")
	PORT_DIPSETTING(	0x00, "Digital (LED)")
	PORT_DIPNAME( 0x80, 0x80, "Sound System" ) PORT_DIPLOCATION("SW3:4")
	PORT_DIPSETTING(	0x80, DEF_STR( Upright ) )
	PORT_DIPSETTING(	0x00, "Cockpit")

	PORT_START		/* IN0 */
	PORT_BIT( 0xff, 0, IPT_DIAL ) PORT_SENSITIVITY(10) PORT_KEYDELTA(30)

	/* this is actually a variable resistor */
	PORT_START_TAG("VR1")
	PORT_ADJUSTER(31, "Sprite scale offset")

	/* this is actually a variable resistor */
	PORT_START_TAG("VR2")
	PORT_ADJUSTER(91, "Sprite scale gain")
INPUT_PORTS_END


static INPUT_PORTS_START( subroc3d )
	PORT_START
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_SERVICE_NO_TOGGLE( 0x10, 0x10 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START  /* DSW 2 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coin_A )) PORT_DIPLOCATION("SW2:1,2,3")
	PORT_DIPSETTING(    0x07, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x38, 0x00, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW2:4,5,6")
	PORT_DIPSETTING(    0x38, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x28, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x18, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0xc0, 0x40, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW2:7,8")
	PORT_DIPSETTING(    0x00, "2" )
	PORT_DIPSETTING(    0x40, "3" )
	PORT_DIPSETTING(    0x80, "4" )
	PORT_DIPSETTING(    0xc0, "5" )

	PORT_START  /* DSW 3 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW3:1,2")
	PORT_DIPSETTING(    0x00, "20000" )
	PORT_DIPSETTING(    0x01, "40000" )
	PORT_DIPSETTING(    0x02, "60000" )
	PORT_DIPSETTING(    0x03, "80000" )
	PORT_DIPNAME( 0x04, 0x04, "Initial Entry" ) PORT_DIPLOCATION("SW3:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW3:4")
	PORT_DIPSETTING(    0x08, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Hard ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Free_Play ) ) PORT_DIPLOCATION("SW3:5")
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Motion" ) PORT_DIPLOCATION("SW3:6")
	PORT_DIPSETTING(    0x00, "Stop" )
	PORT_DIPSETTING(    0x20, DEF_STR( Normal ) )
	PORT_DIPNAME( 0x40, 0x00, "Screen" ) PORT_DIPLOCATION("SW3:7")
	PORT_DIPSETTING(    0x00, DEF_STR( Mono ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Stereo ) )
	PORT_DIPNAME( 0x80, 0x80, "Game" ) PORT_DIPLOCATION("SW3:8")
	PORT_DIPSETTING(    0x00, "Endless" )
	PORT_DIPSETTING(    0x80, DEF_STR( Normal ) )

	PORT_START  /* DSW 1 */					/* Unused */
INPUT_PORTS_END


static INPUT_PORTS_START( buckrog )
	PORT_START
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON3 ) // Accel Hi
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) // Accel Lo
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )

	PORT_START /* Inputs */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_SERVICE_NO_TOGGLE( 0x10, 0x10 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START  /* DSW 1 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coin_A )) PORT_DIPLOCATION("SW1:1,2,3")
	PORT_DIPSETTING(    0x07, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x38, 0x00, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW1:4,5,6")
	PORT_DIPSETTING(    0x38, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x28, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x18, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:7")
	PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:8")
	PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x00, DEF_STR( On ) )


	PORT_START  /* DSW 2 */
	PORT_DIPNAME( 0x01, 0x00, "Collisions" ) PORT_DIPLOCATION("SW2:1")
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Accel by" ) PORT_DIPLOCATION("SW2:2")
	PORT_DIPSETTING(    0x00, "Pedal" )
	PORT_DIPSETTING(    0x02, "Button" )
	PORT_DIPNAME( 0x04, 0x00, "Best 5 Scores" ) PORT_DIPLOCATION("SW2:3")
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, "Score Display" ) PORT_DIPLOCATION("SW2:4")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:5")
	PORT_DIPSETTING(    0x10, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Hard ) )
	PORT_DIPNAME( 0x60, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW2:6,7")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x20, "4" )
	PORT_DIPSETTING(    0x40, "5" )
	PORT_DIPSETTING(    0x60, "6" )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x80, "Cockpit" )
INPUT_PORTS_END



/*************************************
 *
 *  Graphics definitions
 *
 *************************************/

static GFXDECODE_START( turbo )
	GFXDECODE_ENTRY( REGION_GFX2, 0, gfx_8x8x2_planar, 0, 64 )
GFXDECODE_END



/*************************************
 *
 *  Machine drivers
 *
 *************************************/

static MACHINE_DRIVER_START( turbo )
	MDRV_DRIVER_DATA(turbo_state)

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(turbo_map,0)
	MDRV_CPU_VBLANK_INT(irq0_line_hold,1)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER | VIDEO_ALWAYS_UPDATE)
	MDRV_GFXDECODE(turbo)
	MDRV_PALETTE_LENGTH(256)

	MDRV_SCREEN_ADD("main", 0)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)

	MDRV_PALETTE_INIT(turbo)
	MDRV_VIDEO_START(turbo)
	MDRV_VIDEO_UPDATE(turbo)

	/* sound hardware */
	MDRV_IMPORT_FROM(turbo_samples)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( subroc3d )
	MDRV_DRIVER_DATA(turbo_state)

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(subroc3d_map,0)
	MDRV_CPU_VBLANK_INT(irq0_line_hold,1)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_GFXDECODE(turbo)
	MDRV_PALETTE_LENGTH(256)

	MDRV_SCREEN_ADD("main", 0)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)

	MDRV_PALETTE_INIT(subroc3d)
	MDRV_VIDEO_START(turbo)
	MDRV_VIDEO_UPDATE(subroc3d)

	/* sound hardware */
	MDRV_IMPORT_FROM(subroc3d_samples)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( buckrog )
	MDRV_DRIVER_DATA(turbo_state)

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(buckrog_map,0)
	MDRV_CPU_VBLANK_INT(irq0_line_hold,1)

	MDRV_CPU_ADD(Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(buckrog_cpu2_map,0)
	MDRV_CPU_IO_MAP(buckrog_cpu2_portmap,0)

	MDRV_INTERLEAVE(10)
	MDRV_MACHINE_RESET(buckrog)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_GFXDECODE(turbo)
	MDRV_PALETTE_LENGTH(1024)

	MDRV_SCREEN_ADD("main", 0)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)

	MDRV_PALETTE_INIT(buckrog)
	MDRV_VIDEO_START(buckrog)
	MDRV_VIDEO_UPDATE(buckrog)

	/* sound hardware */
	MDRV_IMPORT_FROM(buckrog_samples)
MACHINE_DRIVER_END



/*************************************
 *
 *  ROM definitions
 *
 *************************************/

ROM_START( turbo )
	ROM_REGION( 0x6000, REGION_CPU1, 0 )
	ROM_LOAD( "epr-1513.cpu-ic76",  0x0000, 0x2000, CRC(0326adfc) SHA1(d9f06f0bc78667fa58c4b8ab3a3897d0dd0bdfbf) )
	ROM_LOAD( "epr-1514.cpu-ic89",  0x2000, 0x2000, CRC(25af63b0) SHA1(9af4b3da83a4cef79b7dd0e9061132c499872c1c) )
	ROM_LOAD( "epr-1515.cpu-ic103", 0x4000, 0x2000, CRC(059c1c36) SHA1(ba870e6f45ff15aa148b2c2f213c879144aaacf0) )

	ROM_REGION( 0x20000, REGION_GFX1, 0 )	/* sprite data */
	ROM_LOAD( "epr-1246.prom-ic84", 0x00000, 0x2000, CRC(555bfe9a) SHA1(1e56385475eeff044dcd9b44a154991d3efe995e) )	/* level 0 */
	ROM_RELOAD(                     0x02000, 0x2000 )
	ROM_LOAD( "epr-1247.prom-ic86", 0x04000, 0x2000, CRC(c8c5e4d5) SHA1(da70297340ddea0cd7fe04f2d94ea65f8202d0e5) )	/* level 1 */
	ROM_RELOAD(                     0x06000, 0x2000 )
	ROM_LOAD( "epr-1248.prom-ic88", 0x08000, 0x2000, CRC(82fe5b94) SHA1(b96688ca0cfd90fdc4ee7c2e6c0b66726cc5713c) )	/* level 2 */
	ROM_RELOAD(                     0x0a000, 0x2000 )
	ROM_LOAD( "epr-1249.prom-ic90", 0x0c000, 0x2000, CRC(e258e009) SHA1(598d382db0f789ea2fde749b7467abed545de25a) )	/* level 3 */
	ROM_LOAD( "epr-1250.prom-ic108",0x0e000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1251.prom-ic92", 0x10000, 0x2000, CRC(292573de) SHA1(3ddc980d11478a6a6e4082c2f76c1ab82ffe2f36) )	/* level 4 */
	ROM_LOAD( "epr-1252.prom-ic110",0x12000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1253.prom-ic94", 0x14000, 0x2000, CRC(92783626) SHA1(13979eb964112436182d2a92f21803bcc28f4a4a) )	/* level 5 */
	ROM_LOAD( "epr-1254.prom-ic112",0x16000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1255.prom-ic32", 0x18000, 0x2000, CRC(485dcef9) SHA1(0f760ebb42cc2580a29758c72428a41d74477ce6) )	/* level 6 */
	ROM_LOAD( "epr-1256.prom-ic47", 0x1a000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1257.prom-ic34", 0x1c000, 0x2000, CRC(4ca984ce) SHA1(99f294fb203f23929b44baa2dd1825c67dde08a1) )	/* level 7 */
	ROM_LOAD( "epr-1258.prom-ic49", 0x1e000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )

	ROM_REGION( 0x1000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-1244.cpu-ic111", 0x0000, 0x0800, CRC(17f67424) SHA1(6126562510f1509f3487faaa3b9d7470ab600a2c) )
	ROM_LOAD( "epr-1245.cpu-ic122", 0x0800, 0x0800, CRC(2ba0b46b) SHA1(5d4d4f19ad7a911c7b37db190a420faf665546b4) )

	ROM_REGION( 0x4800, REGION_GFX3, 0 )	/* road data */
	ROM_LOAD( "epr-1125.cpu-ic1",   0x0000, 0x0800, CRC(65b5d44b) SHA1(bbdd5db013c9d876e9666f17c48569c7531bfc08) )
	ROM_LOAD( "epr-1126.cpu-ic2",   0x0800, 0x0800, CRC(685ace1b) SHA1(99c8d36ac910169b27676d18c894433c2ba44853) )
	ROM_LOAD( "epr-1127.cpu-ic13",  0x1000, 0x0800, CRC(9233c9ca) SHA1(cbf9a0f564d8ace1ccd701c1769dbc001d465851) )
	ROM_LOAD( "epr-1238.cpu-ic14",  0x1800, 0x0800, CRC(d94fd83f) SHA1(1e3a68259d2ede623d5a7306fdf693a4eab301f0) )
	ROM_LOAD( "epr-1239.cpu-ic27",  0x2000, 0x0800, CRC(4c41124f) SHA1(d73a9441552c77fb3078553195794311a950d589) )
	ROM_LOAD( "epr-1240.cpu-ic28",  0x2800, 0x0800, CRC(371d6282) SHA1(f5902b357d976822d46aa6404b7bd30855d435a9) )
	ROM_LOAD( "epr-1241.cpu-ic41",  0x3000, 0x0800, CRC(1109358a) SHA1(27a5351a4e87309671e72115299420315a93dba6) )
	ROM_LOAD( "epr-1242.cpu-ic42",  0x3800, 0x0800, CRC(04866769) SHA1(1f9c0d53766fdaf8de57d3df05f291c2ca3dc5fb) )
	ROM_LOAD( "epr-1243.cpu-ic74",  0x4000, 0x0800, CRC(29854c48) SHA1(cab89bc30f83d9746931ddf6f95a6d0c8a517e5d) )

	ROM_REGION( 0x1020, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-1114.prom-ic13",  0x0000, 0x0020, CRC(78aded46) SHA1(c78afe804f8b8e837b0c502de5b8715a41fb92b9) )	/* road red/green color table */
	ROM_LOAD( "pr-1115.prom-ic18",  0x0020, 0x0020, CRC(5394092c) SHA1(129ff61104979ff6a3c3af8bf81c04ae9b133c9e) )	/* road collision/enable */
	ROM_LOAD( "pr-1116.prom-ic20",  0x0040, 0x0020, CRC(3956767d) SHA1(073aaf57175526660fcf7af2e16e7f1d1aaba9a9) )	/* collision detection */
	ROM_LOAD( "pr-1117.prom-ic21",  0x0060, 0x0020, CRC(f06d9907) SHA1(f11db7800f41b03e79f5eef8d7ef3ae0a6277518) )	/* road green/blue color table */
	ROM_LOAD( "pr-1118.cpu-ic99",   0x0100, 0x0100, CRC(07324cfd) SHA1(844abc2042d6810fa34d84ff1ed57744886c6ea6) )	/* background color table */
	ROM_LOAD( "pr-1119.cpu-ic50",   0x0200, 0x0200, CRC(57ebd4bc) SHA1(932649da3537666f95833a8a8aff506217bd9aa1) )	/* sprite Y scaling */
	ROM_LOAD( "pr-1120.cpu-ic62",   0x0400, 0x0200, CRC(8dd4c8a8) SHA1(e8d9cf08f115d57c44746fa0ff28f47b064b4193) )	/* video timing */
	ROM_LOAD( "pr-1121.prom-ic29",  0x0600, 0x0200, CRC(7692f497) SHA1(42468c0705df9928e15ff8deb7e793a6c0c04353) )	/* palette */
	ROM_LOAD( "pr-1122.prom-ic11",  0x0800, 0x0400, CRC(1a86ce70) SHA1(cab708b9a089b2e28f2298c1e4fae6e200923527) )	/* sprite priorities */
	ROM_LOAD( "pr-1123.prom-ic12",  0x0c00, 0x0400, CRC(02d2cb52) SHA1(c34d6b60355747ce20fcb8d322df0e188d187f10) )	/* sprite/road/background priorities */
	ROM_LOAD( "pr-1279.sound-ic40", 0x1000, 0x0020, CRC(b369a6ae) SHA1(dda7c6cf58ce5173f29a3084c85393c0c4587086) )	/* sound board PROM */
ROM_END


ROM_START( turboa )
	ROM_REGION( 0x6000, REGION_CPU1, 0 )
	ROM_LOAD( "epr-1262.cpu-ic76",  0x0000, 0x2000, CRC(1951b83a) SHA1(31933676140db66281b7ca016a1b42cb985f44dd) )
	ROM_LOAD( "epr-1263.cpu-ic89",  0x2000, 0x2000, CRC(45e01608) SHA1(0a9812714c41904bef7a8777b4aae63b5a1dd633) )
	ROM_LOAD( "epr-1264.cpu-ic103", 0x4000, 0x2000, CRC(1802f6c7) SHA1(5c575821d849d955059868b3dd3167b4bef9a8c4) )

	ROM_REGION( 0x20000, REGION_GFX1, 0 )	/* sprite data */
	ROM_LOAD( "epr-1246.prom-ic84", 0x00000, 0x2000, CRC(555bfe9a) SHA1(1e56385475eeff044dcd9b44a154991d3efe995e) )	/* level 0 */
	ROM_RELOAD(                     0x02000, 0x2000 )
	ROM_LOAD( "epr-1247.prom-ic86", 0x04000, 0x2000, CRC(c8c5e4d5) SHA1(da70297340ddea0cd7fe04f2d94ea65f8202d0e5) )	/* level 1 */
	ROM_RELOAD(                     0x06000, 0x2000 )
	ROM_LOAD( "epr-1248.prom-ic88", 0x08000, 0x2000, CRC(82fe5b94) SHA1(b96688ca0cfd90fdc4ee7c2e6c0b66726cc5713c) )	/* level 2 */
	ROM_RELOAD(                     0x0a000, 0x2000 )
	ROM_LOAD( "epr-1249.prom-ic90", 0x0c000, 0x2000, CRC(e258e009) SHA1(598d382db0f789ea2fde749b7467abed545de25a) )	/* level 3 */
	ROM_LOAD( "epr-1250.prom-ic108",0x0e000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1251.prom-ic92", 0x10000, 0x2000, CRC(292573de) SHA1(3ddc980d11478a6a6e4082c2f76c1ab82ffe2f36) )	/* level 4 */
	ROM_LOAD( "epr-1252.prom-ic110",0x12000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1253.prom-ic94", 0x14000, 0x2000, CRC(92783626) SHA1(13979eb964112436182d2a92f21803bcc28f4a4a) )	/* level 5 */
	ROM_LOAD( "epr-1254.prom-ic112",0x16000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1255.prom-ic32", 0x18000, 0x2000, CRC(485dcef9) SHA1(0f760ebb42cc2580a29758c72428a41d74477ce6) )	/* level 6 */
	ROM_LOAD( "epr-1256.prom-ic47", 0x1a000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1257.prom-ic34", 0x1c000, 0x2000, CRC(4ca984ce) SHA1(99f294fb203f23929b44baa2dd1825c67dde08a1) )	/* level 7 */
	ROM_LOAD( "epr-1258.prom-ic49", 0x1e000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )

	ROM_REGION( 0x1000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-1244.cpu-ic111", 0x0000, 0x0800, CRC(17f67424) SHA1(6126562510f1509f3487faaa3b9d7470ab600a2c) )
	ROM_LOAD( "epr-1245.cpu-ic122", 0x0800, 0x0800, CRC(2ba0b46b) SHA1(5d4d4f19ad7a911c7b37db190a420faf665546b4) )

	ROM_REGION( 0x4800, REGION_GFX3, 0 )	/* road data */
	ROM_LOAD( "epr-1125.cpu-ic1",   0x0000, 0x0800, CRC(65b5d44b) SHA1(bbdd5db013c9d876e9666f17c48569c7531bfc08) )
	ROM_LOAD( "epr-1126.cpu-ic2",   0x0800, 0x0800, CRC(685ace1b) SHA1(99c8d36ac910169b27676d18c894433c2ba44853) )
	ROM_LOAD( "epr-1127.cpu-ic13",  0x1000, 0x0800, CRC(9233c9ca) SHA1(cbf9a0f564d8ace1ccd701c1769dbc001d465851) )
	ROM_LOAD( "epr-1238.cpu-ic14",  0x1800, 0x0800, CRC(d94fd83f) SHA1(1e3a68259d2ede623d5a7306fdf693a4eab301f0) )
	ROM_LOAD( "epr-1239.cpu-ic27",  0x2000, 0x0800, CRC(4c41124f) SHA1(d73a9441552c77fb3078553195794311a950d589) )
	ROM_LOAD( "epr-1240.cpu-ic28",  0x2800, 0x0800, CRC(371d6282) SHA1(f5902b357d976822d46aa6404b7bd30855d435a9) )
	ROM_LOAD( "epr-1241.cpu-ic41",  0x3000, 0x0800, CRC(1109358a) SHA1(27a5351a4e87309671e72115299420315a93dba6) )
	ROM_LOAD( "epr-1242.cpu-ic42",  0x3800, 0x0800, CRC(04866769) SHA1(1f9c0d53766fdaf8de57d3df05f291c2ca3dc5fb) )
	ROM_LOAD( "epr-1243.cpu-ic74",  0x4000, 0x0800, CRC(29854c48) SHA1(cab89bc30f83d9746931ddf6f95a6d0c8a517e5d) )

	ROM_REGION( 0x1020, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-1114.prom-ic13",  0x0000, 0x0020, CRC(78aded46) SHA1(c78afe804f8b8e837b0c502de5b8715a41fb92b9) )	/* road red/green color table */
	ROM_LOAD( "pr-1115.prom-ic18",  0x0020, 0x0020, CRC(5394092c) SHA1(129ff61104979ff6a3c3af8bf81c04ae9b133c9e) )	/* road collision/enable */
	ROM_LOAD( "pr-1116.prom-ic20",  0x0040, 0x0020, CRC(3956767d) SHA1(073aaf57175526660fcf7af2e16e7f1d1aaba9a9) )	/* collision detection */
	ROM_LOAD( "pr-1117.prom-ic21",  0x0060, 0x0020, CRC(f06d9907) SHA1(f11db7800f41b03e79f5eef8d7ef3ae0a6277518) )	/* road green/blue color table */
	ROM_LOAD( "pr-1118.cpu-ic99",   0x0100, 0x0100, CRC(07324cfd) SHA1(844abc2042d6810fa34d84ff1ed57744886c6ea6) )	/* background color table */
	ROM_LOAD( "pr-1119.cpu-ic50",   0x0200, 0x0200, CRC(57ebd4bc) SHA1(932649da3537666f95833a8a8aff506217bd9aa1) )	/* sprite Y scaling */
	ROM_LOAD( "pr-1120.cpu-ic62",   0x0400, 0x0200, CRC(8dd4c8a8) SHA1(e8d9cf08f115d57c44746fa0ff28f47b064b4193) )	/* video timing */
	ROM_LOAD( "pr-1121.prom-ic29",  0x0600, 0x0200, CRC(7692f497) SHA1(42468c0705df9928e15ff8deb7e793a6c0c04353) )	/* palette */
	ROM_LOAD( "pr-1122.prom-ic11",  0x0800, 0x0400, CRC(1a86ce70) SHA1(cab708b9a089b2e28f2298c1e4fae6e200923527) )	/* sprite priorities */
	ROM_LOAD( "pr-1123.prom-ic12",  0x0c00, 0x0400, CRC(02d2cb52) SHA1(c34d6b60355747ce20fcb8d322df0e188d187f10) )	/* sprite/road/background priorities */
	ROM_LOAD( "pr-1279.sound-ic40", 0x1000, 0x0020, CRC(b369a6ae) SHA1(dda7c6cf58ce5173f29a3084c85393c0c4587086) )	/* sound board PROM */
ROM_END


ROM_START( turbob )
	ROM_REGION( 0x6000, REGION_CPU1, 0 )
	ROM_LOAD( "epr-1363.cpu-ic76",  0x0000, 0x2000, CRC(5c110fb6) SHA1(fdcdf488bd112db12aa22c4b7e9f34004185d4ce) )
	ROM_LOAD( "epr-1364.cpu-ic89",  0x2000, 0x2000, CRC(6a341693) SHA1(428927c4a14bf82225875012c255d25dcffaf2ab) )
	ROM_LOAD( "epr-1365.cpu-ic103", 0x4000, 0x2000, CRC(3b6b0dc8) SHA1(3ebfa3f9fabd444ee105591acb6984b6b3523725) )

	ROM_REGION( 0x20000, REGION_GFX1, 0 ) /* sprite data */
	ROM_LOAD( "epr-1246.prom-ic84", 0x00000, 0x2000, CRC(555bfe9a) SHA1(1e56385475eeff044dcd9b44a154991d3efe995e) )	/* level 0 */
	ROM_RELOAD(                     0x02000, 0x2000 )
	ROM_LOAD( "epr-1247.prom-ic86", 0x04000, 0x2000, CRC(c8c5e4d5) SHA1(da70297340ddea0cd7fe04f2d94ea65f8202d0e5) )	/* level 1 */
	ROM_RELOAD(                     0x06000, 0x2000 )
	ROM_LOAD( "epr-1248.prom-ic88", 0x08000, 0x2000, CRC(82fe5b94) SHA1(b96688ca0cfd90fdc4ee7c2e6c0b66726cc5713c) )	/* level 2 */
	ROM_RELOAD(                     0x0a000, 0x2000 )
	ROM_LOAD( "epr-1249.prom-ic90", 0x0c000, 0x2000, CRC(e258e009) SHA1(598d382db0f789ea2fde749b7467abed545de25a) )	/* level 3 */
	ROM_LOAD( "epr-1250.prom-ic108",0x0e000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1251.prom-ic92", 0x10000, 0x2000, CRC(292573de) SHA1(3ddc980d11478a6a6e4082c2f76c1ab82ffe2f36) )	/* level 4 */
	ROM_LOAD( "epr-1252.prom-ic110",0x12000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1253.prom-ic94", 0x14000, 0x2000, CRC(92783626) SHA1(13979eb964112436182d2a92f21803bcc28f4a4a) )	/* level 5 */
	ROM_LOAD( "epr-1254.prom-ic112",0x16000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1255.prom-ic32", 0x18000, 0x2000, CRC(485dcef9) SHA1(0f760ebb42cc2580a29758c72428a41d74477ce6) )	/* level 6 */
	ROM_LOAD( "epr-1256.prom-ic47", 0x1a000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )
	ROM_LOAD( "epr-1257.prom-ic34", 0x1c000, 0x2000, CRC(4ca984ce) SHA1(99f294fb203f23929b44baa2dd1825c67dde08a1) )	/* level 7 */
	ROM_LOAD( "epr-1258.prom-ic49", 0x1e000, 0x2000, CRC(aee6e05e) SHA1(99b9b1ec996746ddf713ed38192f350f1f32a847) )

	ROM_REGION( 0x1000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-1244.cpu-ic111", 0x0000, 0x0800, CRC(17f67424) SHA1(6126562510f1509f3487faaa3b9d7470ab600a2c) )
	ROM_LOAD( "epr-1245.cpu-ic122", 0x0800, 0x0800, CRC(2ba0b46b) SHA1(5d4d4f19ad7a911c7b37db190a420faf665546b4) )

	ROM_REGION( 0x4800, REGION_GFX3, 0 )	/* road data */
	ROM_LOAD( "epr-1125.cpu-ic1",   0x0000, 0x0800, CRC(65b5d44b) SHA1(bbdd5db013c9d876e9666f17c48569c7531bfc08) )
	ROM_LOAD( "epr-1126.cpu-ic2",   0x0800, 0x0800, CRC(685ace1b) SHA1(99c8d36ac910169b27676d18c894433c2ba44853) )
	ROM_LOAD( "epr-1127.cpu-ic13",  0x1000, 0x0800, CRC(9233c9ca) SHA1(cbf9a0f564d8ace1ccd701c1769dbc001d465851) )
	ROM_LOAD( "epr-1238.cpu-ic14",  0x1800, 0x0800, CRC(d94fd83f) SHA1(1e3a68259d2ede623d5a7306fdf693a4eab301f0) )
	ROM_LOAD( "epr-1239.cpu-ic27",  0x2000, 0x0800, CRC(4c41124f) SHA1(d73a9441552c77fb3078553195794311a950d589) )
	ROM_LOAD( "epr-1240.cpu-ic28",  0x2800, 0x0800, CRC(371d6282) SHA1(f5902b357d976822d46aa6404b7bd30855d435a9) )
	ROM_LOAD( "epr-1241.cpu-ic41",  0x3000, 0x0800, CRC(1109358a) SHA1(27a5351a4e87309671e72115299420315a93dba6) )
	ROM_LOAD( "epr-1242.cpu-ic42",  0x3800, 0x0800, CRC(04866769) SHA1(1f9c0d53766fdaf8de57d3df05f291c2ca3dc5fb) )
	ROM_LOAD( "epr-1243.cpu-ic74",  0x4000, 0x0800, CRC(29854c48) SHA1(cab89bc30f83d9746931ddf6f95a6d0c8a517e5d) )

	ROM_REGION( 0x1020, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-1114.prom-ic13",  0x0000, 0x0020, CRC(78aded46) SHA1(c78afe804f8b8e837b0c502de5b8715a41fb92b9) )	/* road red/green color table */
	ROM_LOAD( "pr-1115.prom-ic18",  0x0020, 0x0020, CRC(5394092c) SHA1(129ff61104979ff6a3c3af8bf81c04ae9b133c9e) )	/* road collision/enable */
	ROM_LOAD( "pr-1116.prom-ic20",  0x0040, 0x0020, CRC(3956767d) SHA1(073aaf57175526660fcf7af2e16e7f1d1aaba9a9) )	/* collision detection */
	ROM_LOAD( "pr-1117.prom-ic21",  0x0060, 0x0020, CRC(f06d9907) SHA1(f11db7800f41b03e79f5eef8d7ef3ae0a6277518) )	/* road green/blue color table */
	ROM_LOAD( "pr-1118.cpu-ic99",   0x0100, 0x0100, CRC(07324cfd) SHA1(844abc2042d6810fa34d84ff1ed57744886c6ea6) )	/* background color table */
	ROM_LOAD( "pr-1119.cpu-ic50",   0x0200, 0x0200, CRC(57ebd4bc) SHA1(932649da3537666f95833a8a8aff506217bd9aa1) )	/* sprite Y scaling */
	ROM_LOAD( "pr-1120.cpu-ic62",   0x0400, 0x0200, CRC(8dd4c8a8) SHA1(e8d9cf08f115d57c44746fa0ff28f47b064b4193) )	/* video timing */
	ROM_LOAD( "pr-1121.prom-ic29",  0x0600, 0x0200, CRC(7692f497) SHA1(42468c0705df9928e15ff8deb7e793a6c0c04353) )	/* palette */
	ROM_LOAD( "pr-1122.prom-ic11",  0x0800, 0x0400, CRC(1a86ce70) SHA1(cab708b9a089b2e28f2298c1e4fae6e200923527) )	/* sprite priorities */
	ROM_LOAD( "pr-1123.prom-ic12",  0x0c00, 0x0400, CRC(02d2cb52) SHA1(c34d6b60355747ce20fcb8d322df0e188d187f10) )	/* sprite/road/background priorities */
	ROM_LOAD( "pr-1279.sound-ic40", 0x1000, 0x0020, CRC(b369a6ae) SHA1(dda7c6cf58ce5173f29a3084c85393c0c4587086) )	/* sound board PROM */
ROM_END


ROM_START( subroc3d )
	ROM_REGION( 0xa000, REGION_CPU1, 0 )
	ROM_LOAD( "epr-1614a.cpu-ic88", 0x0000, 0x2000, CRC(0ed856b4) SHA1(c2f48170365a53bff312ca20df5b74466de6349a) )
	ROM_LOAD( "epr-1615.cpu-ic87",  0x2000, 0x2000, CRC(6281eb2e) SHA1(591d7f184f51f33fb583c916eddacf4581d612d7) )
	ROM_LOAD( "epr-1616.cpu-ic86",  0x4000, 0x2000, CRC(cc7b0c9b) SHA1(0b44c9a2421a51bdc16a2b590f24fbbfb47ef86f) )

	ROM_REGION( 0x40000, REGION_GFX1, 0 )	/* sprite data */
	ROM_LOAD( "epr-1417.prom-ic29",  0x00000, 0x2000, CRC(2aaff4e0) SHA1(4b4e4f65d63fb9648108c5f01248ffcb3b4bc54f) )	/* level 0 */
	ROM_LOAD( "epr-1418.prom-ic30",  0x02000, 0x2000, CRC(41ff0f15) SHA1(c441c5368a3faf2544d617e1ceb5cb8eac23017d) )
	ROM_LOAD( "epr-1419.prom-ic55",  0x08000, 0x2000, CRC(37ac818c) SHA1(26b15f410c6a6dcde498e20cece973d5ba23b0de) )	/* level 1 */
	ROM_LOAD( "epr-1420.prom-ic56",  0x0a000, 0x2000, CRC(41ff0f15) SHA1(c441c5368a3faf2544d617e1ceb5cb8eac23017d) )
	ROM_LOAD( "epr-1422.prom-ic81",  0x10000, 0x2000, CRC(0221db58) SHA1(8a157168610bf867a038229ad345de8f95741d04) )	/* level 2 */
	ROM_LOAD( "epr-1423.prom-ic82",  0x12000, 0x2000, CRC(08b1a4b8) SHA1(8e64228911863bf93fdf8a17a2ddca739fb20cd6) )
	ROM_LOAD( "epr-1421.prom-ic80",  0x16000, 0x2000, CRC(1db33c09) SHA1(1b2ec0c15fb178bed7cd2c877a6679ac6c59955c) )
	ROM_LOAD( "epr-1425.prom-ic107", 0x18000, 0x2000, CRC(0221db58) SHA1(8a157168610bf867a038229ad345de8f95741d04) )	/* level 3 */
	ROM_LOAD( "epr-1426.prom-ic108", 0x1a000, 0x2000, CRC(08b1a4b8) SHA1(8e64228911863bf93fdf8a17a2ddca739fb20cd6) )
	ROM_LOAD( "epr-1424.prom-ic106", 0x1e000, 0x2000, CRC(1db33c09) SHA1(1b2ec0c15fb178bed7cd2c877a6679ac6c59955c) )
	ROM_LOAD( "epr-1664.prom-ic116", 0x20000, 0x2000, CRC(6c93ece7) SHA1(b6523f08862f70743422283d7d46e226994add8c) )	/* level 4 */
	ROM_LOAD( "epr-1427.prom-ic115", 0x22000, 0x2000, CRC(2f8cfc2d) SHA1(1ee1b57cf7133aee5c12d654112883af36dff2fa) )
	ROM_LOAD( "epr-1429.prom-ic117", 0x26000, 0x2000, CRC(80e649c7) SHA1(433c847e05a072af8fd7a4d1f50ad856f569c0a6) )
	ROM_LOAD( "epr-1665.prom-ic90",  0x28000, 0x2000, CRC(6c93ece7) SHA1(b6523f08862f70743422283d7d46e226994add8c) )	/* level 5 */
	ROM_LOAD( "epr-1430.prom-ic89",  0x2a000, 0x2000, CRC(2f8cfc2d) SHA1(1ee1b57cf7133aee5c12d654112883af36dff2fa) )
	ROM_LOAD( "epr-1432.prom-ic91",  0x2e000, 0x2000, CRC(d9cd98d0) SHA1(4e1c135ea19375c6a97aac3d134572a45972c56a) )
	ROM_LOAD( "epr-1666.prom-ic64",  0x30000, 0x2000, CRC(6c93ece7) SHA1(b6523f08862f70743422283d7d46e226994add8c) )	/* level 6 */
	ROM_LOAD( "epr-1433.prom-ic63",  0x32000, 0x2000, CRC(2f8cfc2d) SHA1(1ee1b57cf7133aee5c12d654112883af36dff2fa) )
	ROM_LOAD( "epr-1436.prom-ic66",  0x34000, 0x2000, CRC(fc4ad926) SHA1(bf6659ac9eaf5e85bc73848ab4e0c6c7413b55a8) )
	ROM_LOAD( "epr-1435.prom-ic65",  0x36000, 0x2000, CRC(40662eef) SHA1(23bf268ea93288af90bd0e8d6f506a5b92490829) )
	ROM_LOAD( "epr-1438.prom-ic38",  0x38000, 0x2000, CRC(d563d4c1) SHA1(81ebb65c3c0a44aaddf6895a80533436b87a15c7) )	/* level 7 */
	ROM_LOAD( "epr-1437.prom-ic37",  0x3a000, 0x2000, CRC(18ba6aad) SHA1(b959f09739909b835d790928f35b7f7e6bd52c31) )
	ROM_LOAD( "epr-1440.prom-ic40",  0x3c000, 0x2000, CRC(3a0e659c) SHA1(51e64b2417cf3b599aa9ecc84457462a5dca2a61) )
	ROM_LOAD( "epr-1439.prom-ic39",  0x3e000, 0x2000, CRC(3d051668) SHA1(aa4f6152235f07ad39019c46dfacf69d70a7fdcc) )

	ROM_REGION( 0x01000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-1618.cpu-ic82",  0x0000, 0x0800, CRC(a25fea71) SHA1(283efee3951d081119d756114f9f49c2996de5f2) )
	ROM_LOAD( "epr-1617.cpu-ic83",  0x0800, 0x0800, CRC(f70c678e) SHA1(1fabf0011fa4fefd29daf18d4ed6b2cbec14e7b7) )

	ROM_REGION( 0x0a00, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-1419.cpu-ic108", 0x00000, 0x0200, CRC(2cfa2a3f) SHA1(7e2ed2f4ef3324c41da153828c7976e7ba91af7c) )  /* color prom */
	ROM_LOAD( "pr-1620.cpu-ic62",  0x00200, 0x0100, CRC(0ab7ef09) SHA1(b89f8889e2c1220b381e1d6ecc4105cb4152e350) )  /* char color palette */
	ROM_LOAD( "pr-1449.cpu-ic5",   0x00300, 0x0200, CRC(5eb9ff47) SHA1(b8b1e7cfb8aa380663684df6090c48c7c57a6d50) )  /* sprite Y scaling */
	ROM_LOAD( "pr-1450.cpu-ic21",  0x00500, 0x0200, CRC(66bdb00c) SHA1(3956647b27a73770bd163eb7ad29fcd9243dac83) )  /* sprite priority */
	ROM_LOAD( "pr-1451.cpu-ic58",  0x00700, 0x0200, CRC(6a575261) SHA1(79f690db671e471153cbdf1939e733da74fcdc08) )  /* video timing */
	ROM_LOAD( "pr-1453.cpu-ic39",  0x00900, 0x0020, CRC(181c6d23) SHA1(4749b205cbaa513ee65a644946235d2cfe275648) )  /* sprite state machine */
	ROM_LOAD( "pr-1454.cpu-ic67",  0x00920, 0x0020, CRC(dc683440) SHA1(8469914d364dc8f9d0839cae3c864de3b2f3c8df) )  /* flipped tilemap addressing */
ROM_END


ROM_START( buckrog )
	ROM_REGION( 0xc000, REGION_CPU1, 0 )
	ROM_LOAD( "cpu-ic3", 0x0000, 0x4000, CRC(f0055e97) SHA1(f6ee2afd6fef710949087d1cb04cbc242d1fa9f5) )	/* encrypted */
	ROM_LOAD( "cpu-ic4", 0x4000, 0x4000, CRC(7d084c39) SHA1(ef2c0a2a59e14d9e196fd3837139fc5acf0f63be) )	/* encrypted */

	ROM_REGION( 0x2000, REGION_CPU2, 0 )
	ROM_LOAD( "epr-5200.cpu-ic66", 0x0000, 0x1000, CRC(0d58b154) SHA1(9f3951eb7ea1fa9ff914738462e4b4f755d60802) )

	ROM_REGION( 0x40000, REGION_GFX1, 0 ) /* sprite data */
	ROM_LOAD( "epr-5216.prom-ic100", 0x00000, 0x2000, CRC(8155bd73) SHA1(b6814f03eafe16457655598685b4827456b86335) )	/* level 0 */
	ROM_LOAD( "epr-5213.prom-ic84",  0x08000, 0x2000, CRC(fd78dda4) SHA1(4328b5782cbe692765eac43a8eba40bdf2e41921) )	/* level 1 */
	ROM_LOAD( "prom-ic68",           0x10000, 0x4000, CRC(2a194270) SHA1(8d4e444bd8a4e2fa32099787849e6c02cffe49b0) )	/* level 2 */
	ROM_LOAD( "prom-ic52",           0x18000, 0x4000, CRC(b31a120f) SHA1(036cdf56cb43b892609a8f793d5ca66940bf128e) )	/* level 3 */
	ROM_LOAD( "prom-ic43",           0x20000, 0x4000, CRC(d3584926) SHA1(7ad410ad84447a3edba2c51c4ec4314a117fffe7) )	/* level 4 */
	ROM_LOAD( "prom-ic59",           0x28000, 0x4000, CRC(d83c7fcf) SHA1(4c4a590762ef87a3057a12e8d4310decbeb8613c) )	/* level 5 */
	ROM_LOAD( "epr-5208.prom-ic58",  0x2c000, 0x2000, CRC(d181fed2) SHA1(fd46e609b7e04d0661c84ad0faa616d75b8ba89f) )
	ROM_LOAD( "prom-ic75",           0x30000, 0x4000, CRC(1bd6e453) SHA1(472fbc7add05b96e368b961c5ef7ef27f3896216) )	/* level 6 */
	ROM_LOAD( "epr-5239.prom-ic74",  0x34000, 0x2000, CRC(c34e9b82) SHA1(9e69fe9dcc631783e43abe356657f3c6a6a533d8) )
	ROM_LOAD( "prom-ic91",           0x38000, 0x4000, CRC(221f4ced) SHA1(07498c9105c4c4589b19c2bc36abafb176de7bda) )	/* level 7 */
	ROM_LOAD( "epr-5238.prom-ic90",  0x3c000, 0x2000, CRC(7aff0886) SHA1(09ed9fa973257bb23b488e02ef9e02d867e4c366) )

	ROM_REGION( 0x01000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-5201.cpu-ic102",  0x0000, 0x0800, CRC(7f21b0a4) SHA1(b6d784031ffecb36863ae1d81eeaaf8f76ab83df) )
	ROM_LOAD( "epr-5202.cpu-ic103",  0x0800, 0x0800, CRC(43f3e5a7) SHA1(2714943b6720311c5d226db3b6fe95d072677793) )

	ROM_REGION( 0x2000, REGION_GFX3, 0 )	/* background color data */
	ROM_LOAD( "epr-5203.cpu-ic91", 0x0000, 0x2000, CRC(631f5b65) SHA1(ce8b23cf97f7e08a13f426964ef140a20a884335) )

	ROM_REGION( 0x0b00, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-5194.cpu-ic39", 0x0000, 0x0020, CRC(bc88cced) SHA1(5055362710c0f58823c05fb4c0e0eec638b91e3d) )  /* char layer X shift */
	ROM_LOAD( "pr-5195.cpu-ic53", 0x0020, 0x0020, CRC(181c6d23) SHA1(4749b205cbaa513ee65a644946235d2cfe275648) )  /* sprite state machine */
	ROM_LOAD( "pr-5196.cpu-ic10", 0x0100, 0x0200, CRC(04204bcf) SHA1(5636eb184463ac58fcfd20012d13d14fb0769124) )  /* sprite Y scaling */
	ROM_LOAD( "pr-5197.cpu-ic78", 0x0300, 0x0200, CRC(a42674af) SHA1(db3590dd0d0f8a85d4ba32ac4ee33f2f4ee4c348) )  /* video timing */
	ROM_LOAD( "pr-5198.cpu-ic93", 0x0500, 0x0200, CRC(32e74bc8) SHA1(dd2c812efd7b8f6b31a45e698d6453ea6bec132e) )  /* char color table */
	ROM_LOAD( "pr-5199.cpu-ic95", 0x0700, 0x0400, CRC(45e997a8) SHA1(023703b90b503310351b12157b1e732e61430fa5) )  /* sprite color table */
ROM_END


ROM_START( buckrogn )
	ROM_REGION( 0xc000, REGION_CPU1, 0 )
	ROM_LOAD( "cpu-ic3", 0x0000, 0x4000, CRC(7f1910af) SHA1(22d37750282676d8fd1f602e928c174f823245c9) )
	ROM_LOAD( "cpu-ic4", 0x4000, 0x4000, CRC(5ecd393b) SHA1(d069f12326644f2c685e516d91d33b97ec162c56) )

	ROM_REGION( 0x2000, REGION_CPU2, 0 )
	ROM_LOAD( "epr-5200.cpu-ic66", 0x0000, 0x1000, CRC(0d58b154) SHA1(9f3951eb7ea1fa9ff914738462e4b4f755d60802) )

	ROM_REGION( 0x40000, REGION_GFX1, 0 ) /* sprite data */
	ROM_LOAD( "epr-5216.prom-ic100",  0x00000, 0x2000, CRC(8155bd73) SHA1(b6814f03eafe16457655598685b4827456b86335) )	/* level 0 */
	ROM_LOAD( "epr-5213.prom-ic84",   0x08000, 0x2000, CRC(fd78dda4) SHA1(4328b5782cbe692765eac43a8eba40bdf2e41921) )	/* level 1 */
	ROM_LOAD( "prom-ic68",            0x10000, 0x4000, CRC(2a194270) SHA1(8d4e444bd8a4e2fa32099787849e6c02cffe49b0) )	/* level 2 */
	ROM_LOAD( "prom-ic52",            0x18000, 0x4000, CRC(b31a120f) SHA1(036cdf56cb43b892609a8f793d5ca66940bf128e) )	/* level 3 */
	ROM_LOAD( "prom-ic43",            0x20000, 0x4000, CRC(d3584926) SHA1(7ad410ad84447a3edba2c51c4ec4314a117fffe7) )	/* level 4 */
	ROM_LOAD( "prom-ic59",            0x28000, 0x4000, CRC(d83c7fcf) SHA1(4c4a590762ef87a3057a12e8d4310decbeb8613c) )	/* level 5 */
	ROM_LOAD( "epr-5208.prom-ic58",   0x2c000, 0x2000, CRC(d181fed2) SHA1(fd46e609b7e04d0661c84ad0faa616d75b8ba89f) )
	ROM_LOAD( "prom-ic75",            0x30000, 0x4000, CRC(1bd6e453) SHA1(472fbc7add05b96e368b961c5ef7ef27f3896216) )	/* level 6 */
	ROM_LOAD( "epr-5239.prom-ic74",   0x34000, 0x2000, CRC(c34e9b82) SHA1(9e69fe9dcc631783e43abe356657f3c6a6a533d8) )
	ROM_LOAD( "prom-ic91",            0x38000, 0x4000, CRC(221f4ced) SHA1(07498c9105c4c4589b19c2bc36abafb176de7bda) )	/* level 7 */
	ROM_LOAD( "epr-5238.prom-ic90",   0x3c000, 0x2000, CRC(7aff0886) SHA1(09ed9fa973257bb23b488e02ef9e02d867e4c366) )

	ROM_REGION( 0x01000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-5201.cpu-ic102",  0x0000, 0x0800, CRC(7f21b0a4) SHA1(b6d784031ffecb36863ae1d81eeaaf8f76ab83df) )
	ROM_LOAD( "epr-5202.cpu-ic103",  0x0800, 0x0800, CRC(43f3e5a7) SHA1(2714943b6720311c5d226db3b6fe95d072677793) )

	ROM_REGION( 0x2000, REGION_GFX3, 0 )	/* background color data */
	ROM_LOAD( "epr-5203.cpu-ic91", 0x0000, 0x2000, CRC(631f5b65) SHA1(ce8b23cf97f7e08a13f426964ef140a20a884335) )

	ROM_REGION( 0x0b00, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-5194.cpu-ic39", 0x0000, 0x0020, CRC(bc88cced) SHA1(5055362710c0f58823c05fb4c0e0eec638b91e3d) )  /* char layer X shift */
	ROM_LOAD( "pr-5195.cpu-ic53", 0x0020, 0x0020, CRC(181c6d23) SHA1(4749b205cbaa513ee65a644946235d2cfe275648) )  /* sprite state machine */
	ROM_LOAD( "pr-5196.cpu-ic10", 0x0100, 0x0200, CRC(04204bcf) SHA1(5636eb184463ac58fcfd20012d13d14fb0769124) )  /* sprite Y scaling */
	ROM_LOAD( "pr-5197.cpu-ic78", 0x0300, 0x0200, CRC(a42674af) SHA1(db3590dd0d0f8a85d4ba32ac4ee33f2f4ee4c348) )  /* video timing */
	ROM_LOAD( "pr-5198.cpu-ic93", 0x0500, 0x0200, CRC(32e74bc8) SHA1(dd2c812efd7b8f6b31a45e698d6453ea6bec132e) )  /* char color table */
	ROM_LOAD( "pr-5199.cpu-ic95", 0x0700, 0x0400, CRC(45e997a8) SHA1(023703b90b503310351b12157b1e732e61430fa5) )  /* sprite color table */
ROM_END


ROM_START( zoom909 )
	ROM_REGION( 0xc000, REGION_CPU1, 0 )
	ROM_LOAD( "epr-5217b.cpu-ic3",  0x0000, 0x4000, CRC(1b56e7dd) SHA1(ccf638c318ebce754ac9628271d2064e05ced35c) )	/* encrypted */
	ROM_LOAD( "epr-5218b.cpu-ic4",  0x4000, 0x4000, CRC(77dfd911) SHA1(cc1d4aac863b2d6b52eff7de2b8233be21aac3c9) )	/* encrypted */

	ROM_REGION( 0x2000, REGION_CPU2, 0 )
	ROM_LOAD( "epr-5200.cpu-ic66",  0x0000, 0x1000, CRC(0d58b154) SHA1(9f3951eb7ea1fa9ff914738462e4b4f755d60802) )

	ROM_REGION( 0x40000, REGION_GFX1, 0 ) /* sprite data */
	ROM_LOAD( "epr-5216.prom-ic100", 0x00000, 0x2000, CRC(8155bd73) SHA1(b6814f03eafe16457655598685b4827456b86335) )	/* level 0 */
	ROM_LOAD( "epr-5213.prom-ic84",  0x08000, 0x2000, CRC(fd78dda4) SHA1(4328b5782cbe692765eac43a8eba40bdf2e41921) )	/* level 1 */
	ROM_LOAD( "epr-5231.prom-ic68",  0x10000, 0x4000, CRC(f00385fc) SHA1(88f64159fdd9b0b8b6a26e7c52da74189f529eb4) )	/* level 2 */
	ROM_LOAD( "epr-5207.prom-ic52",  0x18000, 0x4000, CRC(644f29d8) SHA1(301b94a522bf7a79195d96ca7a4c2ec6f63d45d2) )	/* level 3 */
	ROM_LOAD( "epr-5206.prom-ic43",  0x20000, 0x4000, CRC(049dc998) SHA1(8184a92895b04ea140f073c2345284c23fba7fd4) )	/* level 4 */
	ROM_LOAD( "epr-5209.prom-ic59",  0x28000, 0x4000, CRC(0ff9ff71) SHA1(9038949b657269a3b3287ad526c0e14ebe87525a) )	/* level 5 */
	ROM_LOAD( "epr-5208.prom-ic58",  0x2c000, 0x2000, CRC(d181fed2) SHA1(fd46e609b7e04d0661c84ad0faa616d75b8ba89f) )
	ROM_LOAD( "epr-5212.prom-ic75",  0x30000, 0x4000, CRC(9359ec4f) SHA1(4783527b9961df259e7fbbf8db0b599882dd1207) )	/* level 6 */
	ROM_LOAD( "epr-5211.prom-ic74",  0x34000, 0x2000, CRC(d181fed2) SHA1(fd46e609b7e04d0661c84ad0faa616d75b8ba89f) )
	ROM_LOAD( "epr-5215.prom-ic91",  0x38000, 0x4000, CRC(f5dacc53) SHA1(fe536d16ccb249c26a046f60dc804f5d3be430dc) )	/* level 7 */
	ROM_LOAD( "epr-5214.prom-ic90",  0x3c000, 0x2000, CRC(68306dd6) SHA1(63644e38b36512d93464280d73344c97d9ec1f78) )

	ROM_REGION( 0x01000, REGION_GFX2, ROMREGION_DISPOSE )	/* foreground data */
	ROM_LOAD( "epr-5201.cpu-ic102", 0x0000, 0x0800, CRC(7f21b0a4) SHA1(b6d784031ffecb36863ae1d81eeaaf8f76ab83df) )
	ROM_LOAD( "epr-5202.cpu-ic103", 0x0800, 0x0800, CRC(43f3e5a7) SHA1(2714943b6720311c5d226db3b6fe95d072677793) )

	ROM_REGION( 0x2000, REGION_GFX3, 0 )	/* background color data */
	ROM_LOAD( "epr-5203.cpu-ic91",  0x0000, 0x2000, CRC(631f5b65) SHA1(ce8b23cf97f7e08a13f426964ef140a20a884335) )

	ROM_REGION( 0x0b00, REGION_PROMS, 0 )	/* various PROMs */
	ROM_LOAD( "pr-5194.cpu-ic39", 0x0000, 0x0020, CRC(bc88cced) SHA1(5055362710c0f58823c05fb4c0e0eec638b91e3d) )  /* char layer X shift */
	ROM_LOAD( "pr-5195.cpu-ic53", 0x0020, 0x0020, CRC(181c6d23) SHA1(4749b205cbaa513ee65a644946235d2cfe275648) )  /* sprite state machine */
	ROM_LOAD( "pr-5196.cpu-ic10", 0x0100, 0x0200, CRC(04204bcf) SHA1(5636eb184463ac58fcfd20012d13d14fb0769124) )  /* sprite Y scaling */
	ROM_LOAD( "pr-5197.cpu-ic78", 0x0300, 0x0200, CRC(a42674af) SHA1(db3590dd0d0f8a85d4ba32ac4ee33f2f4ee4c348) )  /* video timing */
	ROM_LOAD( "pr-5198.cpu-ic93", 0x0500, 0x0200, CRC(32e74bc8) SHA1(dd2c812efd7b8f6b31a45e698d6453ea6bec132e) )  /* char color table */
	ROM_LOAD( "pr-5199.cpu-ic95", 0x0700, 0x0400, BAD_DUMP CRC(45e997a8) SHA1(023703b90b503310351b12157b1e732e61430fa5) )  /* sprite color table */
ROM_END



/*************************************
 *
 *  Turbo ROM decoding
 *
 *************************************/

static void turbo_rom_decode(void)
{
	/*
     * The table is arranged this way (second half is mirror image of first)
     *
     *      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
     *
     * 0   00 00 00 00 01 01 01 01 02 02 02 02 03 03 03 03
     * 1   04 04 04 04 05 05 05 05 06 06 06 06 07 07 07 07
     * 2   08 08 08 08 09 09 09 09 0A 0A 0A 0A 0B 0B 0B 0B
     * 3   0C 0C 0C 0C 0D 0D 0D 0D 0E 0E 0E 0E 0F 0F 0F 0F
     * 4   10 10 10 10 11 11 11 11 12 12 12 12 13 13 13 13
     * 5   14 14 14 14 15 15 15 15 16 16 16 16 17 17 17 17
     * 6   18 18 18 18 19 19 19 19 1A 1A 1A 1A 1B 1B 1B 1B
     * 7   1C 1C 1C 1C 1D 1D 1D 1D 1E 1E 1E 1E 1F 1F 1F 1F
     * 8   1F 1F 1F 1F 1E 1E 1E 1E 1D 1D 1D 1D 1C 1C 1C 1C
     * 9   1B 1B 1B 1B 1A 1A 1A 1A 19 19 19 19 18 18 18 18
     * A   17 17 17 17 16 16 16 16 15 15 15 15 14 14 14 14
     * B   13 13 13 13 12 12 12 12 11 11 11 11 10 10 10 10
     * C   0F 0F 0F 0F 0E 0E 0E 0E 0D 0D 0D 0D 0C 0C 0C 0C
     * D   0B 0B 0B 0B 0A 0A 0A 0A 09 09 09 09 08 08 08 08
     * E   07 07 07 07 06 06 06 06 05 05 05 05 04 04 04 04
     * F   03 03 03 03 02 02 02 02 01 01 01 01 00 00 00 00
     *
     */
	static const UINT8 xortable[][32]=
	{
		/* Table 0 */
		/* 0x0000-0x3ff */
		/* 0x0800-0xbff */
		/* 0x4000-0x43ff */
		/* 0x4800-0x4bff */
		{ 0x00,0x44,0x0c,0x48,0x00,0x44,0x0c,0x48,
		  0xa0,0xe4,0xac,0xe8,0xa0,0xe4,0xac,0xe8,
		  0x60,0x24,0x6c,0x28,0x60,0x24,0x6c,0x28,
		  0xc0,0x84,0xcc,0x88,0xc0,0x84,0xcc,0x88 },

		/* Table 1 */
		/* 0x0400-0x07ff */
		/* 0x0c00-0x0fff */
		/* 0x1400-0x17ff */
		/* 0x1c00-0x1fff */
		/* 0x2400-0x27ff */
		/* 0x2c00-0x2fff */
		/* 0x3400-0x37ff */
		/* 0x3c00-0x3fff */
		/* 0x4400-0x47ff */
		/* 0x4c00-0x4fff */
		/* 0x5400-0x57ff */
		/* 0x5c00-0x5fff */
		{ 0x00,0x44,0x18,0x5c,0x14,0x50,0x0c,0x48,
		  0x28,0x6c,0x30,0x74,0x3c,0x78,0x24,0x60,
		  0x60,0x24,0x78,0x3c,0x74,0x30,0x6c,0x28,
		  0x48,0x0c,0x50,0x14,0x5c,0x18,0x44,0x00 }, //0x00 --> 0x10 ?

		/* Table 2 */
		/* 0x1000-0x13ff */
		/* 0x1800-0x1bff */
		/* 0x5000-0x53ff */
		/* 0x5800-0x5bff */
		{ 0x00,0x00,0x28,0x28,0x90,0x90,0xb8,0xb8,
		  0x28,0x28,0x00,0x00,0xb8,0xb8,0x90,0x90,
		  0x00,0x00,0x28,0x28,0x90,0x90,0xb8,0xb8,
		  0x28,0x28,0x00,0x00,0xb8,0xb8,0x90,0x90 },

		/* Table 3 */
		/* 0x2000-0x23ff */
		/* 0x2800-0x2bff */
		/* 0x3000-0x33ff */
		/* 0x3800-0x3bff */
		{ 0x00,0x14,0x88,0x9c,0x30,0x24,0xb8,0xac,
		  0x24,0x30,0xac,0xb8,0x14,0x00,0x9c,0x88,
		  0x48,0x5c,0xc0,0xd4,0x78,0x6c,0xf0,0xe4,
		  0x6c,0x78,0xe4,0xf0,0x5c,0x48,0xd4,0xc0 }
	};

	static const int findtable[]=
	{
		0,1,0,1, /* 0x0000-0x0fff */
		2,1,2,1, /* 0x1000-0x1fff */
		3,1,3,1, /* 0x2000-0x2fff */
		3,1,3,1, /* 0x3000-0x3fff */
		0,1,0,1, /* 0x4000-0x4fff */
		2,1,2,1	 /* 0x5000-0x5fff */
	};

	UINT8 *RAM = memory_region(REGION_CPU1);
	int offs, i, j;
	UINT8 src;

	for (offs = 0x0000; offs < 0x6000; offs++)
	{
		src = RAM[offs];
		i = findtable[offs >> 10];
		j = src >> 2;
		if (src & 0x80) j ^= 0x3f;
		RAM[offs] = src ^ xortable[i][j];
	}
}



/*************************************
 *
 *  Driver init
 *
 *************************************/

static DRIVER_INIT( turbo )
{
	static const ppi8255_interface turbo_8255_intf =
	{
		4,
		{ NULL,          NULL,          NULL,            turbo_analog_r },
		{ NULL,          NULL,          NULL,            input_port_2_r },
		{ NULL,          NULL,          NULL,            NULL },
		{ turbo_ppi0a_w, turbo_ppi1a_w, turbo_sound_a_w, NULL },
		{ turbo_ppi0b_w, turbo_ppi1b_w, turbo_sound_b_w, NULL },
		{ turbo_ppi0c_w, turbo_ppi1c_w, turbo_sound_c_w, turbo_ppi3c_w }
	};
	ppi8255_init(&turbo_8255_intf);
}

static DRIVER_INIT( turbo_enc )
{
	turbo_rom_decode();
	driver_init_turbo(machine);
}


static DRIVER_INIT( subroc3d )
{
	static const ppi8255_interface subroc3d_8255_intf =
	{
		2,
		{ NULL,             NULL },
		{ NULL,             NULL },
		{ NULL,             NULL },
		{ subroc3d_ppi0a_w, subroc3d_sound_a_w },
		{ subroc3d_ppi0b_w, subroc3d_sound_b_w },
		{ subroc3d_ppi0c_w, subroc3d_sound_c_w }
	};
	ppi8255_init(&subroc3d_8255_intf);
}


static DRIVER_INIT( buckrog )
{
	static const ppi8255_interface buckrog_8255_intf =
	{
		2,
		{ NULL,            NULL },
		{ NULL,            NULL },
		{ NULL,            NULL },
		{ buckrog_ppi0a_w, buckrog_sound_a_w },
		{ buckrog_ppi0b_w, buckrog_sound_b_w },
		{ buckrog_ppi0c_w, buckrog_ppi1c_w }
	};
	ppi8255_init(&buckrog_8255_intf);
}

static DRIVER_INIT( buckrog_enc )
{
	buckrog_decode();
	driver_init_buckrog(machine);
}



/*************************************
 *
 *  Game drivers
 *
 *************************************/

GAMEL( 1981, turbo,    0,       turbo,    turbo,    turbo,       ROT270,             "Sega", "Turbo", 0, layout_turbo )
GAMEL( 1981, turboa,   turbo,   turbo,    turbo,    turbo_enc,   ROT270,             "Sega", "Turbo (encrypted set 1)", 0, layout_turbo )
GAMEL( 1981, turbob,   turbo,   turbo,    turbo,    turbo_enc,   ROT270,             "Sega", "Turbo (encrypted set 2)", 0, layout_turbo )
GAMEL( 1982, subroc3d, 0,       subroc3d, subroc3d, subroc3d,    ORIENTATION_FLIP_X, "Sega", "Subroc-3D", 0, layout_subroc3d )
GAMEL( 1982, buckrog,  0,       buckrog,  buckrog,  buckrog_enc, ROT0,               "Sega", "Buck Rogers: Planet of Zoom", 0, layout_buckrog )
GAMEL( 1982, zoom909,  buckrog, buckrog,  buckrog,  buckrog_enc, ROT0,               "Sega", "Zoom 909", GAME_IMPERFECT_COLORS, layout_buckrog ) // bad PROM
GAMEL( 1982, buckrogn, buckrog, buckrog,  buckrog,  buckrog,     ROT0,               "Sega", "Buck Rogers: Planet of Zoom (not encrypted)", 0, layout_buckrog )
