/*
    Diet Go Go

    Driver by Bryan McPhail and David Haywood.

    Todo:

    Tile banking is incorrect after a world is completed (cutscene and map are corrupt)

*/

#include "driver.h"
#include "cpu/h6280/h6280.h"
#include "sound/2151intf.h"
#include "sound/okim6295.h"
#include "decocrpt.h"
#include "deco16ic.h"

VIDEO_UPDATE( dietgo );
VIDEO_START( dietgo );
READ16_HANDLER( dietgo_104_prot_r );
WRITE16_HANDLER( dietgo_104_prot_w );

extern void deco102_decrypt(int region, int address_xor, int data_select_xor, int opcode_select_xor);


static ADDRESS_MAP_START( dietgo_map, ADDRESS_SPACE_PROGRAM, 16 )
	AM_RANGE(0x000000, 0x07ffff) AM_ROM
	AM_RANGE(0x200000, 0x20000f) AM_WRITE(MWA16_RAM) AM_BASE(&deco16_pf12_control)
	AM_RANGE(0x210000, 0x211fff) AM_WRITE(deco16_pf1_data_w) AM_BASE(&deco16_pf1_data)
	AM_RANGE(0x212000, 0x213fff) AM_WRITE(deco16_pf2_data_w) AM_BASE(&deco16_pf2_data)
	AM_RANGE(0x220000, 0x2207ff) AM_WRITE(MWA16_RAM) AM_BASE(&deco16_pf1_rowscroll)
	AM_RANGE(0x222000, 0x2227ff) AM_WRITE(MWA16_RAM) AM_BASE(&deco16_pf2_rowscroll)
	AM_RANGE(0x280000, 0x2807ff) AM_RAM AM_BASE(&spriteram16) AM_SIZE(&spriteram_size)
	AM_RANGE(0x300000, 0x300bff) AM_READ(MRA16_RAM) AM_WRITE(deco16_nonbuffered_palette_w) AM_BASE(&paletteram16)
	AM_RANGE(0x340000, 0x3407ff) AM_READ(dietgo_104_prot_r) AM_WRITE(dietgo_104_prot_w)
	AM_RANGE(0x380000, 0x38ffff) AM_RAM // mainram
ADDRESS_MAP_END


static WRITE8_HANDLER( YM2151_w )
{
	switch (offset) {
	case 0:
		YM2151_register_port_0_w(0,data);
		break;
	case 1:
		YM2151_data_port_0_w(0,data);
		break;
	}
}

/* Physical memory map (21 bits) */
static ADDRESS_MAP_START( sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x000000, 0x00ffff) AM_READ(MRA8_ROM)
	AM_RANGE(0x100000, 0x100001) AM_READ(MRA8_NOP)
	AM_RANGE(0x110000, 0x110001) AM_READ(YM2151_status_port_0_r)
	AM_RANGE(0x120000, 0x120001) AM_READ(OKIM6295_status_0_r)
	AM_RANGE(0x130000, 0x130001) AM_READ(MRA8_NOP) /* This board only has 1 oki chip */
	AM_RANGE(0x140000, 0x140001) AM_READ(soundlatch_r)
	AM_RANGE(0x1f0000, 0x1f1fff) AM_READ(MRA8_BANK8)
ADDRESS_MAP_END

static ADDRESS_MAP_START( sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x000000, 0x00ffff) AM_WRITE(MWA8_ROM)
	AM_RANGE(0x100000, 0x100001) AM_WRITE(MWA8_NOP) /* YM2203 - this board doesn't have one */
	AM_RANGE(0x110000, 0x110001) AM_WRITE(YM2151_w)
	AM_RANGE(0x120000, 0x120001) AM_WRITE(OKIM6295_data_0_w)
	AM_RANGE(0x130000, 0x130001) AM_WRITE(MWA8_NOP)
	AM_RANGE(0x1f0000, 0x1f1fff) AM_WRITE(MWA8_BANK8)
	AM_RANGE(0x1fec00, 0x1fec01) AM_WRITE(H6280_timer_w)
	AM_RANGE(0x1ff400, 0x1ff403) AM_WRITE(H6280_irq_status_w)
ADDRESS_MAP_END



static INPUT_PORTS_START( dietgo )
	PORT_START	/* Verified as 4 bit input port only */
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_VBLANK )

	PORT_START	/* 16bit */
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START	/* Dip switch bank 1 */
	PORT_DIPNAME( 0x0007, 0x0007, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(      0x0001, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(      0x0007, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(      0x0006, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(      0x0005, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(      0x0004, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(      0x0003, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(      0x0002, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x0038, 0x0038, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(      0x0008, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(      0x0038, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(      0x0030, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(      0x0028, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(      0x0020, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(      0x0018, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(      0x0010, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x0040, 0x0040, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0080, 0x0080, "Continue Coin" )
	PORT_DIPSETTING(      0x0080, "1 Start/1 Continue" )
	PORT_DIPSETTING(      0x0000, "2 Start/1 Continue" )

	/* Dip switch bank 2 */
	PORT_DIPNAME( 0x0300, 0x0300, DEF_STR( Lives ) )
	PORT_DIPSETTING(      0x0100, "1" )
	PORT_DIPSETTING(      0x0000, "2" )
	PORT_DIPSETTING(      0x0300, "3" )
	PORT_DIPSETTING(      0x0200, "4" )
	PORT_DIPNAME( 0x0c00, 0x0c00, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(      0x0800, DEF_STR( Easy ) )
	PORT_DIPSETTING(      0x0c00, DEF_STR( Normal ) )
	PORT_DIPSETTING(      0x0400, DEF_STR( Hard ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Free_Play ) )
	PORT_DIPSETTING(      0x1000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Unknown ) )
	PORT_DIPSETTING(      0x2000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) ) // Demo_Sounds ) )
	PORT_DIPSETTING(      0x4000, DEF_STR( Off ) ) // Players dont move in attract mode if on!?
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
	PORT_DIPSETTING(      0x8000, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
INPUT_PORTS_END

static const gfx_layout tile_8x8_layout =
{
	8,8,
	RGN_FRAC(1,2),
	4,
	{ RGN_FRAC(1,2)+8,RGN_FRAC(1,2)+0,RGN_FRAC(0,2)+8,RGN_FRAC(0,2)+0 },
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	8*16
};

static const gfx_layout tile_16x16_layout =
{
	16,16,
	RGN_FRAC(1,2),
	4,
	{ RGN_FRAC(1,2)+8,RGN_FRAC(1,2)+0,RGN_FRAC(0,2)+8,RGN_FRAC(0,2)+0 },
	{ 256,257,258,259,260,261,262,263,0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,8*16,9*16,10*16,11*16,12*16,13*16,14*16,15*16 },
	32*16
};

static const gfx_layout spritelayout =
{
	16,16,
	RGN_FRAC(1,1),
	4,
	{ 24,8,16,0 },
	{ 512,513,514,515,516,517,518,519, 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
	  8*32, 9*32,10*32,11*32,12*32,13*32,14*32,15*32},
	32*32
};

static GFXDECODE_START( dietgo )
	GFXDECODE_ENTRY( REGION_GFX1, 0, tile_8x8_layout,     0, 32 )	/* Tiles (8x8) */
	GFXDECODE_ENTRY( REGION_GFX1, 0, tile_16x16_layout,   0, 32 )	/* Tiles (16x16) */
	GFXDECODE_ENTRY( REGION_GFX2, 0, spritelayout,      512, 16 )	/* Sprites (16x16) */
GFXDECODE_END

static void sound_irq(int state)
{
	cpunum_set_input_line(1,1,state); /* IRQ 2 */
}

static const struct YM2151interface ym2151_interface =
{
	sound_irq
};

static MACHINE_DRIVER_START( dietgo )
	/* basic machine hardware */
	MDRV_CPU_ADD(M68000, 14000000)	/* DE102 */
	MDRV_CPU_PROGRAM_MAP(dietgo_map,0)
	MDRV_CPU_VBLANK_INT(irq6_line_hold,1)

	MDRV_CPU_ADD(H6280, 32220000/4)	/* Custom chip 45; Audio section crystal is 32.220 MHz */
	MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)

	MDRV_SCREEN_REFRESH_RATE(58)
	MDRV_SCREEN_VBLANK_TIME(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(40*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1)
	MDRV_PALETTE_LENGTH(1024)
	MDRV_GFXDECODE(dietgo)

	MDRV_VIDEO_START(dietgo)
	MDRV_VIDEO_UPDATE(dietgo)

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

	MDRV_SOUND_ADD(YM2151, 32220000/9)
	MDRV_SOUND_CONFIG(ym2151_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.45)

	MDRV_SOUND_ADD(OKIM6295, 32220000/32)
	MDRV_SOUND_CONFIG(okim6295_interface_region_1_pin7high)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.60)
MACHINE_DRIVER_END

/* Diet Go Go */

ROM_START( dietgou )
	ROM_REGION( 0x80000, REGION_CPU1, 0 ) /* DE102 code (encrypted) */
	ROM_LOAD16_BYTE( "jx.00",    0x000001, 0x040000, CRC(1a9de04f) SHA1(7ce1e7cf4cdce2b02da4df2a6ae9a9e665e24422) )
	ROM_LOAD16_BYTE( "jx.01",    0x000000, 0x040000, CRC(79c097c8) SHA1(be49055ee324535e1118d243bd49e74ec1d2a2d7) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "jx.02",    0x00000, 0x10000, CRC(4e3492a5) SHA1(5f302bdbacbf95ea9f3694c48545a1d6bba4b019) )

	ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "may00",    0x00000, 0x100000, CRC(234d1f8d) SHA1(42d23aad20df20cbd2359cc12bdd47636b2027d3) )

	ROM_REGION( 0x200000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD16_BYTE( "may01",    0x000000, 0x100000, CRC(2da57d04) SHA1(3898e9fef365ecaa4d86aa11756b527a4fffb494) )
	ROM_LOAD16_BYTE( "may02",    0x000001, 0x100000, CRC(3a66a713) SHA1(beeb99156332cf4870738f7769b719a02d7b40af) )

	ROM_REGION( 0x80000, REGION_SOUND1, 0 ) /* Oki samples */
	ROM_LOAD( "may03",    0x00000, 0x80000, CRC(b6e42bae) SHA1(c282cdf7db30fb63340cc609bf00f5ab63a75583) )

	ROM_REGION( 0x0600, REGION_PLDS, ROMREGION_DISPOSE )
	ROM_LOAD( "pal16l8b.6h",  0x0000, 0x0104, NO_DUMP ) /* PAL is read protected */
	ROM_LOAD( "pal16l8b.7h",  0x0200, 0x0104, NO_DUMP ) /* PAL is read protected */
	ROM_LOAD( "pal16r6a.11h", 0x0400, 0x0104, NO_DUMP ) /* PAL is read protected */
ROM_END

/*

Diet Go Go (Euro version 1.1)

Alternative program ROMs only

Hold both START buttons on bootup to display version notice.

*/

ROM_START( dietgoe )
	ROM_REGION( 0x80000, REGION_CPU1, 0 ) /* DE102 code (encrypted) */
	ROM_LOAD16_BYTE( "jy00-1.4h",    0x000001, 0x040000, CRC(8bce137d) SHA1(55f5b1c89330803c6147f9656f2cabe8d1de8478) )
	ROM_LOAD16_BYTE( "jy01-1.5h",    0x000000, 0x040000, CRC(eca50450) SHA1(1a24117e3b1b66d7dbc5484c94cc2c627d34e6a3) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "jy02.m14",    0x00000, 0x10000, CRC(4e3492a5) SHA1(5f302bdbacbf95ea9f3694c48545a1d6bba4b019) )

	ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "may00",    0x00000, 0x100000, CRC(234d1f8d) SHA1(42d23aad20df20cbd2359cc12bdd47636b2027d3) )

	ROM_REGION( 0x200000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD16_BYTE( "may01",    0x000000, 0x100000, CRC(2da57d04) SHA1(3898e9fef365ecaa4d86aa11756b527a4fffb494) )
	ROM_LOAD16_BYTE( "may02",    0x000001, 0x100000, CRC(3a66a713) SHA1(beeb99156332cf4870738f7769b719a02d7b40af) )

	ROM_REGION( 0x80000, REGION_SOUND1, 0 ) /* Oki samples */
	ROM_LOAD( "may03",    0x00000, 0x80000, CRC(b6e42bae) SHA1(c282cdf7db30fb63340cc609bf00f5ab63a75583) )

	ROM_REGION( 0x0600, REGION_PLDS, ROMREGION_DISPOSE )
	ROM_LOAD( "pal16l8b.6h",  0x0000, 0x0104, NO_DUMP ) /* PAL is read protected */
	ROM_LOAD( "pal16l8b.7h",  0x0200, 0x0104, NO_DUMP ) /* PAL is read protected */
	ROM_LOAD( "pal16r6a.11h", 0x0400, 0x0104, NO_DUMP ) /* PAL is read protected */
ROM_END

ROM_START( dietgo )
	ROM_REGION( 0x80000, REGION_CPU1, 0 ) /* DE102 code (encrypted) */
	ROM_LOAD16_BYTE( "jy00-2.h4",    0x000001, 0x040000, CRC(014dcf62) SHA1(1a28ce4a643ec8b6f062b1200342ed4dc6db38a1) )
	ROM_LOAD16_BYTE( "jy01-2.h5",    0x000000, 0x040000, CRC(793ebd83) SHA1(b9178f18ce6e9fca848cbbf9dce3f3856672bf94) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "jy02.m14",    0x00000, 0x10000, CRC(4e3492a5) SHA1(5f302bdbacbf95ea9f3694c48545a1d6bba4b019) )

	ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "may00",    0x00000, 0x100000, CRC(234d1f8d) SHA1(42d23aad20df20cbd2359cc12bdd47636b2027d3) )

	ROM_REGION( 0x200000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD16_BYTE( "may01",    0x000000, 0x100000, CRC(2da57d04) SHA1(3898e9fef365ecaa4d86aa11756b527a4fffb494) )
	ROM_LOAD16_BYTE( "may02",    0x000001, 0x100000, CRC(3a66a713) SHA1(beeb99156332cf4870738f7769b719a02d7b40af) )

	ROM_REGION( 0x80000, REGION_SOUND1, 0 ) /* Oki samples */
	ROM_LOAD( "may03",    0x00000, 0x80000, CRC(b6e42bae) SHA1(c282cdf7db30fb63340cc609bf00f5ab63a75583) )

	ROM_REGION( 0x0600, REGION_PLDS, ROMREGION_DISPOSE )
	ROM_LOAD( "pal16l8b.6h",  0x0000, 0x0104, NO_DUMP ) /* PAL is read protected */
	ROM_LOAD( "pal16l8b.7h",  0x0200, 0x0104, NO_DUMP ) /* PAL is read protected */
	ROM_LOAD( "pal16r6a.11h", 0x0400, 0x0104, NO_DUMP ) /* PAL is read protected */
ROM_END

/*

               DIET GO GO    DATA EAST



NAME    LOCATION   TYPE
-----------------------
JW-02    14M       27C512
JW-01-2  5H        27C2001
JW-00-2  4H         "
PAL16L8B 7H
PAL16L8B 6H
PAL16R6A 11H

*/

ROM_START( dietgoj )
	ROM_REGION( 0x80000, REGION_CPU1, 0 ) /* DE102 code (encrypted) */
	ROM_LOAD16_BYTE( "jw-00-2.4h",    0x000001, 0x040000, CRC(e6ba6c49) SHA1(d5eaea81f1353c58c03faae67428f7ee98e766b1) )
	ROM_LOAD16_BYTE( "jw-01-2.5h",    0x000000, 0x040000, CRC(684a3d57) SHA1(bd7a57ba837a1dc8f92b5ebcb46e50db1f98524f) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "jx.02",    0x00000, 0x10000, CRC(4e3492a5) SHA1(5f302bdbacbf95ea9f3694c48545a1d6bba4b019) )

	ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "may00",    0x00000, 0x100000, CRC(234d1f8d) SHA1(42d23aad20df20cbd2359cc12bdd47636b2027d3) )

	ROM_REGION( 0x200000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD16_BYTE( "may01",    0x000000, 0x100000, CRC(2da57d04) SHA1(3898e9fef365ecaa4d86aa11756b527a4fffb494) )
	ROM_LOAD16_BYTE( "may02",    0x000001, 0x100000, CRC(3a66a713) SHA1(beeb99156332cf4870738f7769b719a02d7b40af) )

	ROM_REGION( 0x80000, REGION_SOUND1, 0 ) /* Oki samples */
	ROM_LOAD( "may03",    0x00000, 0x80000, CRC(b6e42bae) SHA1(c282cdf7db30fb63340cc609bf00f5ab63a75583) )
ROM_END


static DRIVER_INIT( dietgo )
{
	deco56_decrypt(REGION_GFX1);
	deco102_decrypt(REGION_CPU1, 0xe9ba, 0x01, 0x19);
}

GAME( 1992, dietgo,   0,      dietgo, dietgo,  dietgo,    ROT0, "Data East Corporation", "Diet Go Go (Euro v1.1 1992.09.26)", 0 )
GAME( 1992, dietgoe,  dietgo, dietgo, dietgo,  dietgo,    ROT0, "Data East Corporation", "Diet Go Go (Euro v1.1 1992.08.04)" , 0) // weird, still version 1.1 but different date
GAME( 1992, dietgou,  dietgo, dietgo, dietgo,  dietgo,    ROT0, "Data East Corporation", "Diet Go Go (USA v1.1 1992.09.26)", 0 )
GAME( 1992, dietgoj,  dietgo, dietgo, dietgo,  dietgo,    ROT0, "Data East Corporation", "Diet Go Go (Japan v1.1 1992.09.26)", 0 )
