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

    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 "cpu/z80/z80.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		(XTAL_19_968MHz)

#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_DEVICE_HANDLER( turbo_analog_r );



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

static MACHINE_RESET( buckrog )
{
	turbo_state *state = (turbo_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_DEVICE_HANDLER( turbo_ppi0a_w )
{
	/* bit0-7 = 0PA0-7 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_opa = data;
}


static WRITE8_DEVICE_HANDLER( turbo_ppi0b_w )
{
	/* bit0-7 = 0PB0-7 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_opb = data;
}


static WRITE8_DEVICE_HANDLER( turbo_ppi0c_w )
{
	/* bit0-7 = 0PC0-7 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_opc = data;
}


static WRITE8_DEVICE_HANDLER( turbo_ppi1a_w )
{
	/* bit0-7 = 1PA0-7 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_ipa = data;
}


static WRITE8_DEVICE_HANDLER( turbo_ppi1b_w )
{
	/* bit0-7 = 1PB0-7 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_ipb = data;
}


static WRITE8_DEVICE_HANDLER( turbo_ppi1c_w )
{
	/* bit0-7 = 1PC0-7 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_ipc = data;
}


static WRITE8_DEVICE_HANDLER( turbo_ppi3c_w )
{
	/* bit 0-3 = PLA0-3 */
	/* bit 4-6 = COL0-2 */
	/* bit   7 = n/c */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->turbo_fbpla = data & 0x0f;
	state->turbo_fbcol = (data >> 4) & 0x07;
}


static const ppi8255_interface turbo_8255_intf[4] =
{
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(turbo_ppi0a_w),
		DEVCB_HANDLER(turbo_ppi0b_w),
		DEVCB_HANDLER(turbo_ppi0c_w)
	},
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(turbo_ppi1a_w),
		DEVCB_HANDLER(turbo_ppi1b_w),
		DEVCB_HANDLER(turbo_ppi1c_w)
	},
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(turbo_sound_a_w),
		DEVCB_HANDLER(turbo_sound_b_w),
		DEVCB_HANDLER(turbo_sound_c_w)
	},
	{
		DEVCB_HANDLER(turbo_analog_r),
		DEVCB_INPUT_PORT("DSW2"),
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(turbo_ppi3c_w)
	}
};



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

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

static WRITE8_DEVICE_HANDLER( subroc3d_ppi0a_w )
{
	/* bit 0-3 = PLY0-3 */
	/* bit 4-7 = n/c */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->subroc3d_ply = data & 0x0f;
}


static WRITE8_DEVICE_HANDLER( subroc3d_ppi0c_w )
{
	/* bit 0-3 = COL0-3 */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->subroc3d_col = data & 0x0f;
}


static WRITE8_DEVICE_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 = (turbo_state *)device->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;
}


static const ppi8255_interface subroc3d_8255_intf[2] =
{
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(subroc3d_ppi0a_w),
		DEVCB_HANDLER(subroc3d_ppi0b_w),
		DEVCB_HANDLER(subroc3d_ppi0c_w)
	},
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(subroc3d_sound_a_w),
		DEVCB_HANDLER(subroc3d_sound_b_w),
		DEVCB_HANDLER(subroc3d_sound_c_w)
	}
};



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

static WRITE8_DEVICE_HANDLER( buckrog_ppi0a_w )
{
	/* bit 0-7 = data to be read on the /IOREQ */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->buckrog_command = data;
}


static WRITE8_DEVICE_HANDLER( buckrog_ppi0b_w )
{
	/* bit 0-5 = MOV0-5 */
	/* bit 6-7 = n/c */
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	state->buckrog_mov = data & 0x3f;
}


static WRITE8_DEVICE_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 = (turbo_state *)device->machine->driver_data;
	state->buckrog_fchg = data & 0x07;
	cputag_set_input_line(device->machine, "sub", 0, (data & 0x80) ? CLEAR_LINE : ASSERT_LINE);
}


static WRITE8_DEVICE_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 = (turbo_state *)device->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);
}


static const ppi8255_interface buckrog_8255_intf[2] =
{
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(buckrog_ppi0a_w),
		DEVCB_HANDLER(buckrog_ppi0b_w),
		DEVCB_HANDLER(buckrog_ppi0c_w)
	},
	{
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_NULL,
		DEVCB_HANDLER(buckrog_sound_a_w),
		DEVCB_HANDLER(buckrog_sound_b_w),
		DEVCB_HANDLER(buckrog_ppi1c_w)
	}
};




/*************************************
 *
 *  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 = (turbo_state *)space->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 = ~input_port_read(space->machine, "DSW1");  /* 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 = (turbo_state *)space->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 = (turbo_state *)space->machine->driver_data;
	video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen));
	return input_port_read(space->machine, "DSW3") | (state->turbo_collision & 15);
}


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


static READ8_DEVICE_HANDLER( turbo_analog_r )
{
	turbo_state *state = (turbo_state *)device->machine->driver_data;
	return input_port_read(device->machine, "DIAL") - state->turbo_last_analog;
}


static WRITE8_HANDLER( turbo_analog_reset_w )
{
	turbo_state *state = (turbo_state *)space->machine->driver_data;
	state->turbo_last_analog = input_port_read(space->machine, "DIAL");
}


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 = (turbo_state *)space->machine->driver_data;
	ppi8255_set_port_c(devtag_get_device(space->machine, "ppi8255_0"), 0x00);
	return state->buckrog_command;
}


static READ8_HANDLER( buckrog_port_2_r )
{
	int inp1 = input_port_read(space->machine, "DSW1");
	int inp2 = input_port_read(space->machine, "DSW2");

	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 = input_port_read(space->machine, "DSW1");
	int inp2 = input_port_read(space->machine, "DSW2");

	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_w(devtag_get_device(machine, "ppi8255_0"), param >> 8, param & 0xff);
}


static WRITE8_DEVICE_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(device->machine, 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_RAM_WRITE(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_DEVREADWRITE("ppi8255_0", ppi8255_r, ppi8255_w)
	AM_RANGE(0xf900, 0xf903) AM_MIRROR(0x00fc) AM_DEVREADWRITE("ppi8255_1", ppi8255_r, ppi8255_w)
	AM_RANGE(0xfa00, 0xfa03) AM_MIRROR(0x00fc) AM_DEVREADWRITE("ppi8255_2", ppi8255_r, ppi8255_w)
	AM_RANGE(0xfb00, 0xfb03) AM_MIRROR(0x00fc) AM_DEVREADWRITE("ppi8255_3", ppi8255_r, ppi8255_w)
	AM_RANGE(0xfc00, 0xfc01) AM_MIRROR(0x00fe) AM_READWRITE(turbo_8279_r, turbo_8279_w)
	AM_RANGE(0xfd00, 0xfdff) AM_READ_PORT("INPUT")
	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_PORT("IN0")					// INPUT 253
	AM_RANGE(0xa801, 0xa801) AM_MIRROR(0x07fc) AM_READ_PORT("IN1")					// INPUT 253
	AM_RANGE(0xa802, 0xa802) AM_MIRROR(0x07fc) AM_READ_PORT("DSW2")					// INPUT 253
	AM_RANGE(0xa803, 0xa803) AM_MIRROR(0x07fc) AM_READ_PORT("DSW3")					// INPUT 253
	AM_RANGE(0xb000, 0xb7ff) AM_RAM 												// SCRATCH
	AM_RANGE(0xb800, 0xbfff) 														// HANDLE CL
	AM_RANGE(0xe000, 0xe7ff) AM_RAM_WRITE(turbo_videoram_w) AM_BASE_MEMBER(turbo_state, videoram)	// FIX PAGE
	AM_RANGE(0xe800, 0xe803) AM_MIRROR(0x07fc) AM_DEVREADWRITE("ppi8255_0", ppi8255_r, ppi8255_w)
	AM_RANGE(0xf000, 0xf003) AM_MIRROR(0x07fc) AM_DEVREADWRITE("ppi8255_1", ppi8255_r, ppi8255_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_RAM_WRITE(turbo_videoram_w) AM_BASE_MEMBER(turbo_state, videoram)		// FIX PAGE
	AM_RANGE(0xc800, 0xc803) AM_MIRROR(0x07fc) AM_DEVREADWRITE("ppi8255_0", ppi8255_r, buckrog_ppi8255_0_w)	// 8255
	AM_RANGE(0xd000, 0xd003) AM_MIRROR(0x07fc) AM_DEVREADWRITE("ppi8255_1", ppi8255_r, ppi8255_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_PORT("IN0")								// INPUT
	AM_RANGE(0xe801, 0xe801) AM_MIRROR(0x07fc) AM_READ_PORT("IN1")
	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_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0xff) AM_READ(buckrog_cpu2_command_r)
ADDRESS_MAP_END



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

static INPUT_PORTS_START( turbo )
	PORT_START("INPUT")	/* 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("DSW1")	/* 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("DSW2")	/* 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("DSW3")	/* 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("DIAL")	/* IN0 */
	PORT_BIT( 0xff, 0, IPT_DIAL ) PORT_SENSITIVITY(10) PORT_KEYDELTA(30)

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

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


static INPUT_PORTS_START( subroc3d )
	PORT_START("IN0")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )

	PORT_START("IN1")
	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("DSW2")  /* 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("DSW3")  /* 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("DSW1")  /* DSW 1 */					/* Unused */
INPUT_PORTS_END


static INPUT_PORTS_START( buckrog )
	PORT_START("IN0")
	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("IN1")	/* 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("DSW1")  /* 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("DSW2")  /* 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( "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("maincpu", Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(turbo_map)
	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)

	MDRV_PPI8255_ADD( "ppi8255_0", turbo_8255_intf[0] )
	MDRV_PPI8255_ADD( "ppi8255_1", turbo_8255_intf[1] )
	MDRV_PPI8255_ADD( "ppi8255_2", turbo_8255_intf[2] )
	MDRV_PPI8255_ADD( "ppi8255_3", turbo_8255_intf[3] )

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

	MDRV_SCREEN_ADD("screen", RASTER)
	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("maincpu", Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(subroc3d_map)
	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)

	MDRV_PPI8255_ADD( "ppi8255_0", subroc3d_8255_intf[0] )
	MDRV_PPI8255_ADD( "ppi8255_1", subroc3d_8255_intf[1] )

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

	MDRV_SCREEN_ADD("screen", RASTER)
	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("maincpu", Z80, MASTER_CLOCK/4)
	MDRV_CPU_PROGRAM_MAP(buckrog_map)
	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)

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

	MDRV_QUANTUM_TIME(HZ(600))
	MDRV_MACHINE_RESET(buckrog)

	MDRV_PPI8255_ADD( "ppi8255_0", buckrog_8255_intf[0] )
	MDRV_PPI8255_ADD( "ppi8255_1", buckrog_8255_intf[1] )

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

	MDRV_SCREEN_ADD("screen", RASTER)
	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, "maincpu", 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, "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, "gfx2", 0 )	/* 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, "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, "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, "maincpu", 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, "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, "gfx2", 0 )	/* 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, "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, "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, "maincpu", 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, "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, "gfx2", 0 )	/* 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, "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, "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, "maincpu", 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, "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, "gfx2", 0 )	/* 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, "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, "maincpu", 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, "sub", 0 )
	ROM_LOAD( "epr-5200.cpu-ic66", 0x0000, 0x1000, CRC(0d58b154) SHA1(9f3951eb7ea1fa9ff914738462e4b4f755d60802) )

	ROM_REGION( 0x40000, "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, "gfx2", 0 )	/* 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, "gfx3", 0 )	/* background color data */
	ROM_LOAD( "epr-5203.cpu-ic91", 0x0000, 0x2000, CRC(631f5b65) SHA1(ce8b23cf97f7e08a13f426964ef140a20a884335) )

	ROM_REGION( 0x0b00, "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, "maincpu", 0 )
	ROM_LOAD( "cpu-ic3.bin", 0x0000, 0x4000, CRC(7f1910af) SHA1(22d37750282676d8fd1f602e928c174f823245c9) )
	ROM_LOAD( "cpu-ic4.bin", 0x4000, 0x4000, CRC(5ecd393b) SHA1(d069f12326644f2c685e516d91d33b97ec162c56) )

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

	ROM_REGION( 0x40000, "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, "gfx2", 0 )	/* 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, "gfx3", 0 )	/* background color data */
	ROM_LOAD( "epr-5203.cpu-ic91", 0x0000, 0x2000, CRC(631f5b65) SHA1(ce8b23cf97f7e08a13f426964ef140a20a884335) )

	ROM_REGION( 0x0b00, "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


/*
Buck Rogers Zoom 909 (early version of Buck Rogers Planet of Zoom)
Sega, 1982

PCB Layouts
-----------

Top
---
834-5122 (Sound Board)
|------------------------------------------------------|
|                                                      |
|             4066  555     LM324  LM324  LM324        |
|                                                      |
| 7404  7407  4066  555 555 MB4391                     |
|                                                      |
| 40175 40175 7438  7439    MB4391 MB4391 LM324        |
|                                                      |
| 53323   53323  IR3702     IR3702 LM324  LM324  P138MM|
|                                                5837N |
| 53323   53323  53323      IR3702                     |
|                                           LA4460 VOL |
|------------------------------------------------------|
Notes:
      All IC's shown.


Middle
------
834-5120  171-5011  CPU BOARD  (sticker 834-5142)
|------------------------------------------------------|
|D8279    D8255  EPR-5200  Z80   20MHz    SEGA         |
|    PR-5199     6116                     315-5014     |
|                                                      |
|    EPR-5203  8264                                    |
|              8264                       6116         |
|              8264                          EPR-5217B |
|                                                      |
|                                         *  EPR-5218B |
|2                                                     |
|2    PR-5198                                          |
|W                                                     |
|A                                              2148   |
|Y         6116                                        |
|                                               2148   |
|                          PR-5195  PR-5194            |
|               PR-5197                         2148   |
|      EPR-5201                                        |
|                                               2148   |
|      EPR-5202                                        |
|                                                      |
| DSW2  DSW1                                   PR-5196 |
|                                                      |
| D8255                                                |
|                                                      |
|------------------------------------------------------|
Notes:
      6116          : 2K  x8 SRAM
      8264          : 64K x4 DRAM
      2148          : 1K  x4 SRAM
      Z80 clock     : 5.000MHz
      315-5014 clock: measured 3.766MHz to 3.815MHz on pin6; moving slowly!? (NOTE! This is an encrypted Z80)
      VSync         : 60Hz
      VCO voltage   : 1.43 Volts
                      Note! This is guessed to make the sprites a reasonable size. A shot of the title screen
                      after coinup from a real machine would help to fix the real voltage and give the correct
                      sprite sizes. Note in MAME the Buck Rogers title isn't centered because of the guessed
                      voltage, though I'm sure it's very close.
                      Is it like that on the real machine?

      Label           ROM Type
      EPR-5200.66     2732
      EPR-5201.102    2716
      EPR-5202.103    2716
      EPR-5203.91     2764
      EPR-5217B.3     27128
      EPR-5218B.4     27128
      PR-5194.39      TBP18S030 (compatible with 82S123)
      PR-5195.53      TBP18S030 (compatible with 82S123)
      PR-5196.10      TBP28S46N (compatible with 82S141)
      PR-5197.78      TBP28S46N (compatible with 82S141)
      PR-5198.93      TBP28S46N (compatible with 82S141)
      PR-5199.95      82S181
      *               Empty socket


Bottom
------
(sticker 834-5151)  171-5012  ROM BOARD
|------------------------------------------------------|
|                                                      |
|                                                      |
| EPR-5214  EPR-5211  EPR-5208      *                  |
|                                                      |
| EPR-5215  EPR-5212  EPR-5209  EPR-5206               |
|                                                      |
|                                                      |
|                                                      |
|                                                      |
|                                          NEC         |
|                                          uPC624      |
|                                                      |
|                                               NEC    |
|                                               C159A  |
|                                                      |
|                                          TL084  TL084|
|                                                      |
|                                                 4066 |
|                                                 4066 |
| EPR-5216  EPR-5213  EPR-5231  EPR-5207               |
|                                                75365 |
|    *          *         *         *            75365 |
|                                                      |
|                                                      |
|------------------------------------------------------|
Notes:
      Label          ROM Type
      EPR-5206.43    27128
      EPR-5207.52    27128
      EPR-5208.58    2764
      EPR-5209.59    27128
      EPR-5211.74    2764
      EPR-5212.75    27128
      EPR-5213.84    2764
      EPR-5214.90    2764
      EPR-5215.91    27128
      EPR-5216.100   2764
      EPR-5231.68    27128
      *              Empty socket

      Note! On my PCB, ROMs 58 and 74 match. It could be
      wrong, but the PCB appears to work perfectly.
*/

ROM_START( zoom909 )
	ROM_REGION( 0xc000, "maincpu", 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, "sub", 0 )
	ROM_LOAD( "epr-5200.cpu-ic66",  0x0000, 0x1000, CRC(0d58b154) SHA1(9f3951eb7ea1fa9ff914738462e4b4f755d60802) )

	ROM_REGION( 0x40000, "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, "gfx2", 0 )	/* 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, "gfx3", 0 )	/* background color data */
	ROM_LOAD( "epr-5203.cpu-ic91",  0x0000, 0x2000, CRC(631f5b65) SHA1(ce8b23cf97f7e08a13f426964ef140a20a884335) )

	ROM_REGION( 0x0b00, "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(running_machine *machine)
{
	/*
     * 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(machine, "maincpu");
	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_enc )
{
	turbo_rom_decode(machine);
}


static DRIVER_INIT( buckrog_enc )
{
	buckrog_decode(machine, "maincpu");
}



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

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