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path: root/src/lib/formats/a5105_dsk.cpp
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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/*********************************************************************

    formats/a5105_dsk.c

    a5105 format

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

#include <cassert>

#include "formats/a5105_dsk.h"

a5105_format::a5105_format() : upd765_format(formats)
{
}

const char *a5105_format::name() const
{
	return "a5105";
}

const char *a5105_format::description() const
{
	return "A5105 disk image";
}

const char *a5105_format::extensions() const
{
	return "img";
}

// Unverified gap sizes
const a5105_format::format a5105_format::formats[] = {
	{
		floppy_image::FF_525, floppy_image::DSQD, floppy_image::MFM,
		2000, // 2us, 300rpm
		5, 80, 2,
		1024, {},
		1, {},
		80, 50, 22, 80
	},
	{}
};

const floppy_format_type FLOPPY_A5105_FORMAT = &floppy_image_format_creator<a5105_format>;
356'>356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708
/***************************************************************************

    Sega Pengo

    driver by Nicola Salmoria

    Games supported:
        * Pengo
        * Jr Pac-Man (bootleg)

    Known issues:
        * none

****************************************************************************

    Pengo memory map (preliminary)

    driver by Nicola Salmoria

    0000-7fff ROM
    8000-83ff Video RAM
    8400-87ff Color RAM
    8800-8fff RAM

    memory mapped ports:

    read:
    9000      DSW1
    9040      DSW0
    9080      IN1
    90c0      IN0

    write:
    8ff2-8ffd 6 pairs of two bytes:
              the first byte contains the sprite image number (bits 2-7), Y flip (bit 0),
              X flip (bit 1); the second byte the color
    9005      sound voice 1 waveform (nibble)
    9011-9013 sound voice 1 frequency (nibble)
    9015      sound voice 1 volume (nibble)
    900a      sound voice 2 waveform (nibble)
    9016-9018 sound voice 2 frequency (nibble)
    901a      sound voice 2 volume (nibble)
    900f      sound voice 3 waveform (nibble)
    901b-901d sound voice 3 frequency (nibble)
    901f      sound voice 3 volume (nibble)
    9022-902d Sprite coordinates, x/y pairs for 6 sprites
    9040      interrupt enable
    9041      sound enable
    9042      palette bank selector
    9043      flip screen
    9044-9045 coin counters
    9046      color lookup table bank selector
    9047      character/sprite bank selector
    9070      watchdog reset

    Main clock: XTAL = 18.432 MHz
    Z80 Clock: XTAL/6 = 3.072 MHz
    Horizontal video frequency: HSYNC = XTAL/3/192/2 = 16 kHz
    Video frequency: VSYNC = HSYNC/132/2 = 60.606060 Hz
    VBlank duration: 1/VSYNC * (20/132) = 2500 us

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

#include "driver.h"
#include "machine/segacrpt.h"
#include "pacman.h"
#include "sound/namco.h"



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

#define MASTER_CLOCK		(18432000)

#define PIXEL_CLOCK			(MASTER_CLOCK/3)

/* H counts from 128->511, HBLANK starts at 128+16=144 and ends at 128+64+32+16=240 */
#define HTOTAL				(384)
#define HBEND				(0)		/*(96+16)*/
#define HBSTART				(288)	/*(16)*/

#define VTOTAL				(264)
#define VBEND				(0)		/*(16)*/
#define VBSTART				(224)	/*(224+16)*/



/*************************************
 *
 *  Main CPU memory handlers
 *
 *************************************/

static ADDRESS_MAP_START( pengo_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0x83ff) AM_RAM_WRITE(pacman_videoram_w) AM_BASE(&videoram) AM_SIZE(&videoram_size) /* video and color RAM, scratchpad RAM, sprite codes */
	AM_RANGE(0x8400, 0x87ff) AM_RAM_WRITE(pacman_colorram_w) AM_BASE(&colorram)
	AM_RANGE(0x8800, 0x8fef) AM_RAM
	AM_RANGE(0x8ff0, 0x8fff) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0x9000, 0x901f) AM_WRITE(pacman_sound_w) AM_BASE(&pacman_soundregs)
	AM_RANGE(0x9020, 0x902f) AM_WRITE(SMH_RAM) AM_BASE(&spriteram_2)
	AM_RANGE(0x9000, 0x903f) AM_READ(input_port_3_r)	/* DSW1 */
	AM_RANGE(0x9040, 0x907f) AM_READ(input_port_2_r)	/* DSW0 */
	AM_RANGE(0x9040, 0x9040) AM_WRITE(interrupt_enable_w)
	AM_RANGE(0x9041, 0x9041) AM_WRITE(pacman_sound_enable_w)
	AM_RANGE(0x9042, 0x9042) AM_WRITE(pengo_palettebank_w)
	AM_RANGE(0x9043, 0x9043) AM_WRITE(pacman_flipscreen_w)
	AM_RANGE(0x9044, 0x9045) AM_WRITE(SMH_NOP) /* coin counters */
	AM_RANGE(0x9046, 0x9046) AM_WRITE(pengo_colortablebank_w)
	AM_RANGE(0x9047, 0x9047) AM_WRITE(pengo_gfxbank_w)
	AM_RANGE(0x9070, 0x9070) AM_WRITE(SMH_NOP)
	AM_RANGE(0x9080, 0x90bf) AM_READ(input_port_1_r)	/* IN1 */
	AM_RANGE(0x90c0, 0x90ff) AM_READ(input_port_0_r)	/* IN0 */
ADDRESS_MAP_END


static ADDRESS_MAP_START( jrpacmbl_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0x87ff) AM_RAM_WRITE(jrpacman_videoram_w) AM_BASE(&videoram) AM_SIZE(&videoram_size)
	AM_RANGE(0x8800, 0x8fef) AM_RAM
	AM_RANGE(0x8ff0, 0x8fff) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0x9000, 0x901f) AM_WRITE(pacman_sound_w) AM_BASE(&pacman_soundregs)
	AM_RANGE(0x9020, 0x902f) AM_WRITE(SMH_RAM) AM_BASE(&spriteram_2)
	AM_RANGE(0x9030, 0x9030) AM_WRITE(jrpacman_scroll_w)
	AM_RANGE(0x9040, 0x904f) AM_READ(input_port_2_r)	/* DSW1 */
	AM_RANGE(0x9040, 0x9040) AM_WRITE(interrupt_enable_w)
	AM_RANGE(0x9041, 0x9041) AM_WRITE(pacman_sound_enable_w)
	AM_RANGE(0x9042, 0x9042) AM_WRITE(pengo_palettebank_w)
	AM_RANGE(0x9043, 0x9043) AM_WRITE(pacman_flipscreen_w)
	AM_RANGE(0x9044, 0x9044) AM_WRITE(jrpacman_bgpriority_w)
	AM_RANGE(0x9045, 0x9045) AM_WRITE(jrpacman_spritebank_w)
	AM_RANGE(0x9046, 0x9046) AM_WRITE(pengo_colortablebank_w)
	AM_RANGE(0x9047, 0x9047) AM_WRITE(jrpacman_charbank_w)
	AM_RANGE(0x9070, 0x9070) AM_WRITE(SMH_NOP)
	AM_RANGE(0x9080, 0x90bf) AM_READ(input_port_1_r)	/* IN1 */
	AM_RANGE(0x90c0, 0x90ff) AM_READ(input_port_0_r)	/* IN0 */
ADDRESS_MAP_END



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

static INPUT_PORTS_START( pengo )
	PORT_START("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
	/* the coin input must stay low for no less than 2 frames and no more */
	/* than 9 frames to pass the self test check. */
	/* Moreover, this way we avoid the game freezing until the user releases */
	/* the "coin" key. */
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(2)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_IMPULSE(2)
	/* Coin Aux doesn't need IMPULSE to pass the test, but it still needs it */
	/* to avoid the freeze. */
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN3 ) PORT_IMPULSE(2)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 )

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL
	PORT_SERVICE_NO_TOGGLE(0x10, IP_ACTIVE_LOW)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL

	PORT_START("DSW0")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "30000" )
	PORT_DIPSETTING(    0x01, "50000" )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x18, 0x10, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x18, "2" )
	PORT_DIPSETTING(    0x10, "3" )
	PORT_DIPSETTING(    0x08, "4" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x20, 0x20, "Rack Test (Cheat)" ) PORT_CODE(KEYCODE_F1)
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xc0, 0x80, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Medium ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )

	PORT_START("DSW1")
	PORT_DIPNAME( 0x0f, 0x0c, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x09, "2 Coins/1 Credit 5/3" )
	PORT_DIPSETTING(    0x05, "2 Coins/1 Credit 4/3" )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x0d, "1 Coin/1 Credit 5/6" )
	PORT_DIPSETTING(    0x03, "1 Coin/1 Credit 4/5" )
	PORT_DIPSETTING(    0x0b, "1 Coin/1 Credit 2/3" )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x07, "1 Coin/2 Credits 5/11" )
	PORT_DIPSETTING(    0x0f, "1 Coin/2 Credits 4/9" )
	PORT_DIPSETTING(    0x0a, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x0e, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0xf0, 0xc0, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x90, "2 Coins/1 Credit 5/3" )
	PORT_DIPSETTING(    0x50, "2 Coins/1 Credit 4/3" )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0xd0, "1 Coin/1 Credit 5/6" )
	PORT_DIPSETTING(    0x30, "1 Coin/1 Credit 4/5" )
	PORT_DIPSETTING(    0xb0, "1 Coin/1 Credit 2/3" )
	PORT_DIPSETTING(    0x20, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x70, "1 Coin/2 Credits 5/11" )
	PORT_DIPSETTING(    0xf0, "1 Coin/2 Credits 4/9" )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 1C_6C ) )
INPUT_PORTS_END


static INPUT_PORTS_START( jrpacmbl )
	PORT_START("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )	PORT_4WAY
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL
	PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("DSW0")
	PORT_DIPNAME( 0x03, 0x01, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Free_Play ) )
	PORT_DIPNAME( 0x0c, 0x08, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "1" )
	PORT_DIPSETTING(    0x04, "2" )
	PORT_DIPSETTING(    0x08, "3" )
	PORT_DIPSETTING(    0x0c, "5" )
	PORT_DIPNAME( 0x30, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "10000" )
	PORT_DIPSETTING(    0x10, "15000" )
	PORT_DIPSETTING(    0x20, "20000" )
	PORT_DIPSETTING(    0x30, "30000" )
	PORT_DIPNAME( 0x40, 0x40, "Rack Test (Cheat)" ) PORT_CODE(KEYCODE_F1)
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
INPUT_PORTS_END



/*************************************
 *
 *  Graphics layouts
 *
 *************************************/

static const gfx_layout tilelayout =
{
	8,8,	/* 8*8 characters */
    RGN_FRAC(1,2),    /* 256 characters */
    2,  /* 2 bits per pixel */
    { 0, 4 },   /* the two bitplanes for 4 pixels are packed into one byte */
    { 8*8+0, 8*8+1, 8*8+2, 8*8+3, 0, 1, 2, 3 }, /* bits are packed in groups of four */
    { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
    16*8    /* every char takes 16 bytes */
};


static const gfx_layout spritelayout =
{
	16,16,	/* 16*16 sprites */
	RGN_FRAC(1,2),	/* 64 sprites */
	2,	/* 2 bits per pixel */
	{ 0, 4 },	/* the two bitplanes for 4 pixels are packed into one byte */
	{ 8*8, 8*8+1, 8*8+2, 8*8+3, 16*8+0, 16*8+1, 16*8+2, 16*8+3,
			24*8+0, 24*8+1, 24*8+2, 24*8+3, 0, 1, 2, 3 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
			32*8, 33*8, 34*8, 35*8, 36*8, 37*8, 38*8, 39*8 },
	64*8	/* every sprite takes 64 bytes */
};


static GFXDECODE_START( pengo )
	GFXDECODE_ENTRY( "gfx1", 0x0000, tilelayout,   0, 128 )
	GFXDECODE_ENTRY( "gfx1", 0x2000, spritelayout, 0, 128 )
GFXDECODE_END



/*************************************
 *
 *  Sound interfaces
 *
 *************************************/

static const namco_interface namco_config =
{
	3,			/* number of voices */
	0			/* stereo */
};



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

static MACHINE_DRIVER_START( pengo )

	/* basic machine hardware */
	MDRV_CPU_ADD("main", Z80, MASTER_CLOCK/6)
	MDRV_CPU_PROGRAM_MAP(pengo_map,0)
	MDRV_CPU_VBLANK_INT("main", irq0_line_hold)

	/* video hardware */
	MDRV_GFXDECODE(pengo)
	MDRV_PALETTE_LENGTH(128*4)

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

	MDRV_PALETTE_INIT(pacman)
	MDRV_VIDEO_START(pengo)
	MDRV_VIDEO_UPDATE(pacman)

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

	MDRV_SOUND_ADD("namco", NAMCO, MASTER_CLOCK/6/32)
	MDRV_SOUND_CONFIG(namco_config)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( jrpacmbl )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(pengo)

	/* basic machine hardware */
	MDRV_CPU_MODIFY("main")
	MDRV_CPU_PROGRAM_MAP(jrpacmbl_map,0)

	MDRV_VIDEO_START(jrpacman)
MACHINE_DRIVER_END



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

ROM_START( pengo )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "ep1689c.8",    0x0000, 0x1000, CRC(f37066a8) SHA1(0930de17a763a527057f60783a92662b09554426) )
	ROM_LOAD( "ep1690b.7",    0x1000, 0x1000, CRC(baf48143) SHA1(4c97529e61eeca5d94938b1dfbeac41bf8cbaf7d) )
	ROM_LOAD( "ep1691b.15",   0x2000, 0x1000, CRC(adf0eba0) SHA1(c8949fbdbfe5023ee17a789ef60205e834a76c81) )
	ROM_LOAD( "ep1692b.14",   0x3000, 0x1000, CRC(a086d60f) SHA1(7079769d14dfe3873ffe29623ba0a93413706c6d) )
	ROM_LOAD( "ep1693b.21",   0x4000, 0x1000, CRC(b72084ec) SHA1(c0508951c2ad8dc31481be8b3bfee2063e3fb0d7) )
	ROM_LOAD( "ep1694b.20",   0x5000, 0x1000, CRC(94194a89) SHA1(7b47aec61593efd758e2a031f72a854bb0ba8af1) )
	ROM_LOAD( "ep5118b.32",   0x6000, 0x1000, CRC(af7b12c4) SHA1(207ed466546f40ca60a38031b83aef61446902e2) )
	ROM_LOAD( "ep5119c.31",   0x7000, 0x1000, CRC(933950fe) SHA1(fec7236b3dee2ea6e39c68440a6d2d9e3f72675a) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "ep1640.92",    0x0000, 0x1000, CRC(d7eec6cd) SHA1(e542bcc28f292be9a0a29d949de726e0b55e654a) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1)*/
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( pengo2 )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "ic8.2",        0x0000, 0x1000, CRC(e4924b7b) SHA1(44297658af8f8c884eba02b792346c5008137dfe) )
	ROM_LOAD( "ic7.2",        0x1000, 0x1000, CRC(72e7775d) SHA1(49e04178ee171f727dd023c019395679cfbad452) )
	ROM_LOAD( "ic15.2",       0x2000, 0x1000, CRC(7410ef1e) SHA1(7ed8e16c6ce401904c0da9758e2a405d7b9b451b) )
	ROM_LOAD( "ic14.2",       0x3000, 0x1000, CRC(55b3f379) SHA1(bc244f97132f0514adb3d6ceda8afbd45c1c587a) )
	ROM_LOAD( "ep1693b.21",   0x4000, 0x1000, CRC(b72084ec) SHA1(c0508951c2ad8dc31481be8b3bfee2063e3fb0d7) )
	ROM_LOAD( "ic20.2",       0x5000, 0x1000, CRC(770570cf) SHA1(43ead8236f53d39041ffc21bdeef10b3a77ce7f2) )
	ROM_LOAD( "ep5118b.32",   0x6000, 0x1000, CRC(af7b12c4) SHA1(207ed466546f40ca60a38031b83aef61446902e2) )
	ROM_LOAD( "ic31.2",       0x7000, 0x1000, CRC(669555c1) SHA1(50d5cf8022af6d6bd022235ab06015cb5c8aa433) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "ep1640.92",    0x0000, 0x1000, CRC(d7eec6cd) SHA1(e542bcc28f292be9a0a29d949de726e0b55e654a) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1) */
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( pengo2u )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "epr5128.u8",     0x0000, 0x1000, CRC(3dfeb20e) SHA1(a387b72501da77bf38b58619d2099083a0463e1f) )
	ROM_LOAD( "epr5129.u7",     0x1000, 0x1000, CRC(1db341bd) SHA1(d1c66bb9cf479e6960dbcd35c820097a81eaa555) )
	ROM_LOAD( "epr5130.u15",    0x2000, 0x1000, CRC(7c2842d5) SHA1(a8a568da68babd0ccb9f2cee4182fc01c3138494) )
	ROM_LOAD( "epr5131.u14",    0x3000, 0x1000, CRC(6e3c1f2f) SHA1(2ee821b0f6e0f3cfeae7f5ff25a6e9bd977efce0) )
	ROM_LOAD( "ep5124.21",    0x4000, 0x1000, CRC(95f354ff) SHA1(fdebc68a6d87f8ecdf52a57a34ae5ae844a13510) )
	ROM_LOAD( "epr5133.u20",    0x5000, 0x1000, CRC(0fdb04b8) SHA1(ed814d58318c1055e475ff678609d189727bf9b4) )
	ROM_LOAD( "ep5126.32",    0x6000, 0x1000, CRC(e5920728) SHA1(0ac5ffdad7bdcb32e630b9582e1b1aaece5198c9) )
	ROM_LOAD( "epr5135.u31",    0x7000, 0x1000, CRC(13de47ed) SHA1(332b484d47c9921ed93432755bb2d7a9d4628939) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "ep1640.92",    0x0000, 0x1000, CRC(d7eec6cd) SHA1(e542bcc28f292be9a0a29d949de726e0b55e654a) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1) */
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( pengo3u )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "ep5120.8",     0x0000, 0x1000, CRC(f01afb60) SHA1(1db732a17a9f79f8f1751f80c77889142928e41b) )
	ROM_LOAD( "ep5121.7",     0x1000, 0x1000, CRC(2eb38353) SHA1(d351347f93a3ed01c8b5274ec19352dd611a8dd4) )
	ROM_LOAD( "ep5122.15",    0x2000, 0x1000, CRC(c33400d7) SHA1(7b9617d22a9de8d3658abe34b5d2171ce37acc39) )
	ROM_LOAD( "ep5123.14",    0x3000, 0x1000, CRC(6a85c6a2) SHA1(444acc08607c892bb20b3a02753169addf5b11de) )
	ROM_LOAD( "ep5124.21",    0x4000, 0x1000, CRC(95f354ff) SHA1(fdebc68a6d87f8ecdf52a57a34ae5ae844a13510) )
	ROM_LOAD( "ep5125.20",    0x5000, 0x1000, CRC(1a42310f) SHA1(fef20385299a709ee17ed16510ac5702bd5cc257) )
	ROM_LOAD( "ep5126.32",    0x6000, 0x1000, CRC(e5920728) SHA1(0ac5ffdad7bdcb32e630b9582e1b1aaece5198c9) )
	ROM_LOAD( "ep5127.31",    0x7000, 0x1000, CRC(a7d3d1d6) SHA1(20e4353208c3803d8879b25f821ea617e9a19cc4) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "ep1640.92",    0x0000, 0x1000, CRC(d7eec6cd) SHA1(e542bcc28f292be9a0a29d949de726e0b55e654a) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1) */
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( pengo4 )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "ep1738.8",     0x0000, 0x1000, CRC(68ba25ea) SHA1(ce937831b7b210b4a625514bd4e6b3a7a36d008e) )
	ROM_LOAD( "ep1739.7",     0x1000, 0x1000, CRC(41e7b5b3) SHA1(d512d41ee3f5716070250e7ab63342e4fbf92875) )
	ROM_LOAD( "ep1740.15",    0x2000, 0x1000, CRC(27f05f59) SHA1(c0d40328a7dff34f6b84c991d9c88b240e55b4f3) )
	ROM_LOAD( "ep1741.14",    0x3000, 0x1000, CRC(27d93ec1) SHA1(925e59878342af58106d5b11ebb6c86cbb69ae91) )
	ROM_LOAD( "ep1742.21",    0x4000, 0x1000, CRC(b72084ec) SHA1(c0508951c2ad8dc31481be8b3bfee2063e3fb0d7) )
	ROM_LOAD( "ep1743.20",    0x5000, 0x1000, CRC(770570cf) SHA1(43ead8236f53d39041ffc21bdeef10b3a77ce7f2) )
	ROM_LOAD( "ep1744.32",    0x6000, 0x1000, CRC(af7b12c4) SHA1(207ed466546f40ca60a38031b83aef61446902e2) )
	ROM_LOAD( "ep1745.31",    0x7000, 0x1000, CRC(507e18b9) SHA1(e169e4c9c6350fb5e4020222dbcaa6f5ce41849c) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "ep1640.92",    0x0000, 0x1000, CRC(d7eec6cd) SHA1(e542bcc28f292be9a0a29d949de726e0b55e654a) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1) */
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( pengob )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "1",            0x0000, 0x2000, CRC(e04064db) SHA1(6689066b443807646894a357317f468bfc92368a) )
	ROM_LOAD( "2",            0x2000, 0x2000, CRC(75752424) SHA1(634e696a692c7245dfa5c5dfd4ce87755c2a90d4) )
	ROM_LOAD( "021_pn03.bin", 0x4000, 0x1000, CRC(7824e3ef) SHA1(3395bb537614de8da763d05f0d2e312145017e8f) ) // 3 (1/2)
	ROM_LOAD( "020_pn07.bin", 0x5000, 0x1000, CRC(377b9663) SHA1(35327dc0f0c19fa5a863aaf8d8f3bfcd2a5717a9) ) // 3 (2/2)
	ROM_LOAD( "032_pn04.bin", 0x6000, 0x1000, CRC(bfde44c1) SHA1(97e8a360ce09faa36d864d7020b1669a349867c6) ) // 4 (1/2)
	ROM_LOAD( "031_pn08.bin", 0x7000, 0x1000, CRC(64e8c30d) SHA1(aa50c21db2ac8361fc575f0785e2aae57f338564) ) // 4 (2/2)

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "5",            0x0000, 0x1000, CRC(1232437b) SHA1(7ec410a2a802514449ccb05684762c25f29556b0) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1) */
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( penta )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "008_pn01.bin", 0x0000, 0x1000, CRC(22f328df) SHA1(ba13b8d20ccde995a158cf62b4bc48cb369a0788) )
	ROM_LOAD( "007_pn05.bin", 0x1000, 0x1000, CRC(15bbc7d3) SHA1(1823e3ba7388d3f4d9262e9b9cf70f123862c546) )
	ROM_LOAD( "015_pn02.bin", 0x2000, 0x1000, CRC(de82b74a) SHA1(301c1223dd0b111f8439affcb96b6e29106364ed) )
	ROM_LOAD( "014_pn06.bin", 0x3000, 0x1000, CRC(160f3836) SHA1(ff90c82d52ed0c2c17a7aeabc9401ee9d8cf4d2d) )
	ROM_LOAD( "021_pn03.bin", 0x4000, 0x1000, CRC(7824e3ef) SHA1(3395bb537614de8da763d05f0d2e312145017e8f) )
	ROM_LOAD( "020_pn07.bin", 0x5000, 0x1000, CRC(377b9663) SHA1(35327dc0f0c19fa5a863aaf8d8f3bfcd2a5717a9) )
	ROM_LOAD( "032_pn04.bin", 0x6000, 0x1000, CRC(bfde44c1) SHA1(97e8a360ce09faa36d864d7020b1669a349867c6) )
	ROM_LOAD( "031_pn08.bin", 0x7000, 0x1000, CRC(64e8c30d) SHA1(aa50c21db2ac8361fc575f0785e2aae57f338564) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "092_pn09.bin", 0x0000, 0x1000, CRC(6afeba9d) SHA1(cd723fb94aa90dbaac9a6fe085c0f4786d2fa092) ) /* tiles (bank 1) */
	ROM_CONTINUE(             0x2000, 0x1000 ) /* sprites (bank 1) */
	ROM_LOAD( "ep1695.105",   0x1000, 0x1000, CRC(5bfd26e9) SHA1(bdec535e486b43a8f5550334beff423eeace10b2) ) /* tiles (bank 2) */
	ROM_CONTINUE(             0x3000, 0x1000 ) /* sprites (bank 2) */

	ROM_REGION( 0x0420, "proms", 0 )
	ROM_LOAD( "pr1633.78",    0x0000, 0x0020, CRC(3a5844ec) SHA1(680eab0e1204c9b74adc11588461651b474021bb) ) /* color palette */
	ROM_LOAD( "pr1634.88",    0x0020, 0x0400, CRC(766b139b) SHA1(3fcd66610fcaee814953a115bf5e04788923181f) ) /* color lookup */

	ROM_REGION( 0x0200, "namco", 0 )
	ROM_LOAD( "pr1635.51",    0x0000, 0x0100, CRC(c29dea27) SHA1(563c9770028fe39188e62630711589d6ed242a66) ) /* waveform */
	ROM_LOAD( "pr1636.70",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


ROM_START( jrpacmbl )
	ROM_REGION( 0x10000, "main", 0 )
	ROM_LOAD( "jrpacpe-05.ic8",     0x0000, 0x1000, CRC(98049df4) SHA1(4ea022c8664dd9ec185f9d5990a548e867e5071f) )
	ROM_LOAD( "jrpacpe-01.ic7",     0x1000, 0x1000, CRC(b7a5cef8) SHA1(c315970f0dd698a1036df12502e3fe3ec7f81d53) )
	ROM_LOAD( "jrpacpe-06.ic6",     0x2000, 0x1000, CRC(ecf39785) SHA1(9e47f29f4cadb5d8fd3790c7e16c653fc0a96a88) )
	ROM_LOAD( "jrpacpe-02.ic5",     0x3000, 0x1000, CRC(c090145c) SHA1(918d32267379b99f898fdcd987b3a65f9ec4f088) )
	ROM_LOAD( "jrpacpe-07.ic4",     0x4000, 0x1000, CRC(659b9956) SHA1(5576d4d95ced804e8abdd870662574bfdd6df18f) )
	ROM_LOAD( "jrpacpe-03.ic3",     0x5000, 0x1000, CRC(0ebcfac9) SHA1(4da01169768e35601e04df7004ae7496f08a709a) )
	ROM_LOAD( "jrpacpe-08.ic2",     0x6000, 0x1000, CRC(0624ffd6) SHA1(8209ab633242f2c8952a5afe2b7cd399bab08f0a) )
	ROM_LOAD( "jrpacpe-04.ic1",     0x7000, 0x1000, CRC(d3a8448c) SHA1(f58aed6ebdb45ed38613b336a517b87745831e24) )

	ROM_REGION( 0x4000, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "jrpacpe-09.ic92",    0x0000, 0x2000, CRC(2128d9b4) SHA1(b6f64423ae6ee3765050f7b85b4490b5eed95215) ) /* tiles bank 1 & 2 */
	ROM_LOAD( "jrpacpe-10.ic105",   0x2000, 0x2000, CRC(73477193) SHA1(f00a488958ea0438642d345693787bdf771219ad) ) /* sprites (bank 1) & 2 */

	ROM_REGION( 0x0120, "proms", 0 )
	ROM_LOAD_NIB_LOW ( "jrprom.9e", 0x0000, 0x0100, CRC(029d35c4) SHA1(d9aa2dc442e9ac36cf3c346b9fb1aa745eaf3cb8) ) /* color palette (low bits) */
	ROM_LOAD_NIB_HIGH( "jrprom.9f", 0x0000, 0x0100, CRC(eee34a79) SHA1(7561f8ccab2af85c111af6a02af6986eb67503e5) ) /* color palette (high bits) */
	ROM_LOAD( "jrprom.9p",          0x0020, 0x0100, CRC(9f6ea9d8) SHA1(62cf15513934d34641433c891a7f73bef82e2fb1) ) /* color lookup table */

	ROM_REGION( 0x0200, "namco", 0 )	/* waveform */
	ROM_LOAD( "jrprom.7p",          0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) ) /* waveform */
	ROM_LOAD( "jrprom.5s",          0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END



/*************************************
 *
 *  Driver initialization
 *
 *************************************/

static DRIVER_INIT( pengo )
{
	pengo_decode(machine);
}


static DRIVER_INIT( penta )
{
/*
    the values vary, but the translation mask is always laid out like this:

      0 1 2 3 4 5 6 7 8 9 a b c d e f
    0 A A B B A A B B C C D D C C D D
    1 A A B B A A B B C C D D C C D D
    2 E E F F E E F F G G H H G G H H
    3 E E F F E E F F G G H H G G H H
    4 A A B B A A B B C C D D C C D D
    5 A A B B A A B B C C D D C C D D
    6 E E F F E E F F G G H H G G H H
    7 E E F F E E F F G G H H G G H H
    8 H H G G H H G G F F E E F F E E
    9 H H G G H H G G F F E E F F E E
    a D D C C D D C C B B A A B B A A
    b D D C C D D C C B B A A B B A A
    c H H G G H H G G F F E E F F E E
    d H H G G H H G G F F E E F F E E
    e D D C C D D C C B B A A B B A A
    f D D C C D D C C B B A A B B A A

    (e.g. 0xc0 is XORed with H)
    therefore in the following tables we only keep track of A, B, C, D, E, F, G and H.
*/
	static const UINT8 data_xortable[2][8] =
	{
		{ 0xa0,0x82,0x28,0x0a,0x82,0xa0,0x0a,0x28 },	/* ...............0 */
		{ 0x88,0x0a,0x82,0x00,0x88,0x0a,0x82,0x00 }		/* ...............1 */
	};
	static const UINT8 opcode_xortable[8][8] =
	{
		{ 0x02,0x08,0x2a,0x20,0x20,0x2a,0x08,0x02 },	/* ...0...0...0.... */
		{ 0x88,0x88,0x00,0x00,0x88,0x88,0x00,0x00 },	/* ...0...0...1.... */
		{ 0x88,0x0a,0x82,0x00,0xa0,0x22,0xaa,0x28 },	/* ...0...1...0.... */
		{ 0x88,0x0a,0x82,0x00,0xa0,0x22,0xaa,0x28 },	/* ...0...1...1.... */
		{ 0x2a,0x08,0x2a,0x08,0x8a,0xa8,0x8a,0xa8 },	/* ...1...0...0.... */
		{ 0x2a,0x08,0x2a,0x08,0x8a,0xa8,0x8a,0xa8 },	/* ...1...0...1.... */
		{ 0x88,0x0a,0x82,0x00,0xa0,0x22,0xaa,0x28 },	/* ...1...1...0.... */
		{ 0x88,0x0a,0x82,0x00,0xa0,0x22,0xaa,0x28 }		/* ...1...1...1.... */
	};
	UINT8 *decrypt = auto_malloc(0x8000);
	UINT8 *rom = memory_region(machine, "main");
	int A;

	memory_set_decrypted_region(0, 0x0000, 0x7fff, decrypt);

	for (A = 0x0000;A < 0x8000;A++)
	{
		int i,j;
		UINT8 src;


		src = rom[A];

		/* pick the translation table from bit 0 of the address */
		i = A & 1;

		/* pick the offset in the table from bits 1, 3 and 5 of the source data */
		j = ((src >> 1) & 1) + (((src >> 3) & 1) << 1) + (((src >> 5) & 1) << 2);
		/* the bottom half of the translation table is the mirror image of the top */
		if (src & 0x80) j = 7 - j;

		/* decode the ROM data */
		rom[A] = src ^ data_xortable[i][j];

		/* now decode the opcodes */
		/* pick the translation table from bits 4, 8 and 12 of the address */
		i = ((A >> 4) & 1) + (((A >> 8) & 1) << 1) + (((A >> 12) & 1) << 2);
		decrypt[A] = src ^ opcode_xortable[i][j];
	}
}


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

GAME( 1982, pengo,    0,     pengo, pengo, pengo,    ROT90, "Sega", "Pengo (set 1 rev c)", GAME_SUPPORTS_SAVE )
GAME( 1982, pengo2,   pengo, pengo, pengo, pengo,    ROT90, "Sega", "Pengo (set 2)", GAME_SUPPORTS_SAVE )
GAME( 1982, pengo2u,  pengo, pengo, pengo, 0,        ROT90, "Sega", "Pengo (set 2 not encrypted)", GAME_SUPPORTS_SAVE )
GAME( 1982, pengo3u,  pengo, pengo, pengo, 0,        ROT90, "Sega", "Pengo (set 3 not encrypted)", GAME_SUPPORTS_SAVE )
GAME( 1982, pengo4,   pengo, pengo, pengo, pengo,    ROT90, "Sega", "Pengo (set 4)", GAME_SUPPORTS_SAVE )
GAME( 1982, pengob,   pengo, pengo, pengo, penta,    ROT90, "bootleg", "Pengo (bootleg)", GAME_SUPPORTS_SAVE )
GAME( 1982, penta,    pengo, pengo, pengo, penta,    ROT90, "bootleg", "Penta", GAME_SUPPORTS_SAVE )
GAME( 1983, jrpacmbl, jrpacman, jrpacmbl, jrpacmbl, 0, ROT90, "bootleg", "Jr. Pac-Man (Pengo hardware)", GAME_NO_COCKTAIL | GAME_SUPPORTS_SAVE )