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Diffstat (limited to 'src/mame/drivers/skyfox.cpp')
-rw-r--r--src/mame/drivers/skyfox.cpp417
1 files changed, 417 insertions, 0 deletions
diff --git a/src/mame/drivers/skyfox.cpp b/src/mame/drivers/skyfox.cpp
new file mode 100644
index 00000000000..e0040ed1457
--- /dev/null
+++ b/src/mame/drivers/skyfox.cpp
@@ -0,0 +1,417 @@
+// license:BSD-3-Clause
+// copyright-holders:Luca Elia
+/***************************************************************************
+
+ -= Sky Fox / Exerizer =-
+
+ driver by Luca Elia (l.elia@tin.it)
+
+
+CPU : Z80A x 2
+Sound: YM2203C x 2
+Other: 2 HM6116LP-3 (one on each board)
+ 1 KM6264L-15 (on bottom board)
+
+To Do: The background rendering is entirely guesswork
+
+2008-07
+Verified Dip locations and recommended settings with manual
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "sound/2203intf.h"
+#include "includes/skyfox.h"
+
+
+/***************************************************************************
+
+ Main CPU
+
+***************************************************************************/
+
+WRITE8_MEMBER(skyfox_state::skyfox_vregs_w)
+{
+ switch (offset)
+ {
+ case 0:
+ m_bg_ctrl = data;
+ break;
+
+ case 1:
+ soundlatch_byte_w(space, 0, data);
+ break;
+
+ default:
+ break;
+ }
+}
+
+static ADDRESS_MAP_START( skyfox_map, AS_PROGRAM, 8, skyfox_state )
+ AM_RANGE(0x0000, 0xbfff) AM_ROM
+ AM_RANGE(0xc000, 0xcfff) AM_RAM
+ AM_RANGE(0xd000, 0xd3ff) AM_RAM AM_SHARE("spriteram")
+ AM_RANGE(0xd400, 0xdfff) AM_RAM // ?
+ AM_RANGE(0xe000, 0xe000) AM_READ_PORT("INPUTS")
+ AM_RANGE(0xe001, 0xe001) AM_READ_PORT("DSW0")
+ AM_RANGE(0xe002, 0xe002) AM_READ_PORT("DSW1")
+ AM_RANGE(0xe008, 0xe00f) AM_WRITE(skyfox_vregs_w)
+ AM_RANGE(0xf001, 0xf001) AM_READ_PORT("DSW2")
+ADDRESS_MAP_END
+
+
+/***************************************************************************
+
+ Sound CPU
+
+***************************************************************************/
+
+static ADDRESS_MAP_START( skyfox_sound_map, AS_PROGRAM, 8, skyfox_state )
+ AM_RANGE(0x0000, 0x7fff) AM_ROM
+ AM_RANGE(0x8000, 0x87ff) AM_RAM
+// AM_RANGE(0x9000, 0x9001) AM_WRITENOP // ??
+ AM_RANGE(0xa000, 0xa001) AM_DEVREADWRITE("ym1", ym2203_device, read, write)
+// AM_RANGE(0xb000, 0xb001) AM_WRITENOP // ??
+ AM_RANGE(0xc000, 0xc001) AM_DEVREADWRITE("ym2", ym2203_device, read, write)
+ AM_RANGE(0xb000, 0xb000) AM_READ(soundlatch_byte_r)
+ADDRESS_MAP_END
+
+
+/***************************************************************************
+
+ Input Ports
+
+***************************************************************************/
+
+INPUT_CHANGED_MEMBER(skyfox_state::coin_inserted)
+{
+ m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE);
+}
+
+static INPUT_PORTS_START( skyfox )
+ PORT_START("INPUTS")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
+
+ PORT_START("DSW0")
+ PORT_DIPNAME( 0x01, 0x01, "Unknown 1-0" ) // rest unused?
+ PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x02, 0x02, "Unknown 1-1" )
+ PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x04, 0x04, "Unknown 1-2" )
+ PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x18, 0x08, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW1:4,5")
+ PORT_DIPSETTING( 0x00, "20K" )
+ PORT_DIPSETTING( 0x08, "30K" )
+ PORT_DIPSETTING( 0x10, "40K" )
+ PORT_DIPSETTING( 0x18, "50K" )
+ PORT_DIPNAME( 0x20, 0x00, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW1:6")
+ PORT_DIPSETTING( 0x20, DEF_STR( Medium ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( Hard ) )
+ PORT_DIPNAME( 0x40, 0x40, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW1:7")
+ PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x80, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW1:8")
+ PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
+ PORT_DIPSETTING( 0x80, DEF_STR( Cocktail ) )
+
+ PORT_START("DSW1") // Coins, DSW + Vblank
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_VBLANK("screen")
+ PORT_DIPNAME( 0x0e, 0x00, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW2:1,2,3")
+ PORT_DIPSETTING( 0x0e, DEF_STR( 5C_1C ) )
+ PORT_DIPSETTING( 0x0a, DEF_STR( 4C_1C ) )
+ PORT_DIPSETTING( 0x06, DEF_STR( 3C_1C ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x04, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x0c, DEF_STR( 1C_4C ) )
+ /* According to manual, there is also "SW2:4" which has to be always OFF */
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("DSW2") // DSW
+ PORT_DIPNAME( 0x07, 0x02, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2,3")
+ PORT_DIPSETTING( 0x00, "1" )
+ PORT_DIPSETTING( 0x01, "2" )
+ PORT_DIPSETTING( 0x02, "3" )
+ PORT_DIPSETTING( 0x03, "4" )
+ PORT_DIPSETTING( 0x04, "5" )
+ PORT_DIPSETTING( 0x05, "5" ) // dupe
+ PORT_DIPSETTING( 0x06, "5" ) // dupe
+ PORT_DIPSETTING( 0x07, "Infinite (Cheat)")
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("COINS") // Fake input port, coins are directly connected on NMI line
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_CHANGED_MEMBER(DEVICE_SELF, skyfox_state,coin_inserted, 0)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_CHANGED_MEMBER(DEVICE_SELF, skyfox_state,coin_inserted, 0)
+INPUT_PORTS_END
+
+
+
+
+/***************************************************************************
+
+ Graphics Layouts
+
+***************************************************************************/
+
+/* 8x8x8 tiles (note that the tiles in the ROMs are 32x32x8, but
+ we cut them in 8x8x8 ones in the init function, in order to
+ support 8x8, 16x16 and 32x32 sprites. */
+
+static const gfx_layout layout_8x8x8 =
+{
+ 8,8,
+ RGN_FRAC(1,1),
+ 8,
+ {0,1,2,3,4,5,6,7},
+ {0*8,1*8,2*8,3*8,4*8,5*8,6*8,7*8},
+ {0*64,1*64,2*64,3*64,4*64,5*64,6*64,7*64},
+ 8*8*8
+};
+
+static GFXDECODE_START( skyfox )
+ GFXDECODE_ENTRY( "gfx1", 0, layout_8x8x8, 0, 1 ) // [0] Sprites
+GFXDECODE_END
+
+
+/***************************************************************************
+
+ Machine Drivers
+
+***************************************************************************/
+
+/* Scroll the background on every vblank (guess). */
+
+INTERRUPT_GEN_MEMBER(skyfox_state::skyfox_interrupt)
+{
+ /* Scroll the bg */
+ m_bg_pos += (m_bg_ctrl >> 1) & 0x7; // maybe..
+}
+
+void skyfox_state::machine_start()
+{
+ save_item(NAME(m_bg_pos));
+ save_item(NAME(m_bg_ctrl));
+}
+
+void skyfox_state::machine_reset()
+{
+ m_bg_pos = 0;
+ m_bg_ctrl = 0;
+}
+
+static MACHINE_CONFIG_START( skyfox, skyfox_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, XTAL_8MHz/2) /* Verified at 4MHz */
+ MCFG_CPU_PROGRAM_MAP(skyfox_map)
+ MCFG_CPU_VBLANK_INT_DRIVER("screen", skyfox_state, skyfox_interrupt)
+
+ MCFG_CPU_ADD("audiocpu", Z80, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
+ MCFG_CPU_PROGRAM_MAP(skyfox_sound_map)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(62.65)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
+ MCFG_SCREEN_SIZE(512, 256)
+ MCFG_SCREEN_VISIBLE_AREA(0+0x60, 320-1+0x60, 0+16, 256-1-16) // from $30*2 to $CC*2+8
+ MCFG_SCREEN_UPDATE_DRIVER(skyfox_state, screen_update_skyfox)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", skyfox)
+ MCFG_PALETTE_ADD("palette", 256+256) /* 256 static colors (+256 for the background??) */
+ MCFG_PALETTE_INIT_OWNER(skyfox_state, skyfox)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_SOUND_ADD("ym1", YM2203, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
+
+ MCFG_SOUND_ADD("ym2", YM2203, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
+MACHINE_CONFIG_END
+
+
+
+/***************************************************************************
+
+ ROMs Loading
+
+****************************************************************************
+
+ Sky Fox
+
+
+c042 : Lives
+c044-5 : Score (BCD)
+c048-9 : Power (BCD)
+
+****************************************************************************
+
+ Exerizer [Bootleg]
+
+malcor
+
+Location Type File ID Checksum
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+TB 5E 27C256 1-J F302 [ background ]
+TB 5N 27C256 1-I F5E3 [ sound ]
+LB 27C256 1-A A53E [ program 1 ]
+LB 27C256 1-B 382C [ program 2 ]
+LB 27C512 1-C CDAC [ GFX ]
+LB 27C512 1-D 9C7A [ GFX ]
+LB 27C512 1-E D808 [ GFX ]
+LB 27C512 1-F F87E [ GFX ]
+LB 27C512 1-G 9709 [ GFX ]
+LB 27C512 1-H DFDA [ GFX ]
+TB 82S129 1.BPR 0972 [ video blue ]
+TB 82S129 2.BPR 0972 [ video red ]
+TB 82S129 3.BPR 0972 [ video green ]
+
+Lower board ROM locations:
+
+---=======------=======----
+| CN2 CN1 |
+| 1-A |
+| |
+| 1-B |
+| |
+| |
+| 1 1 1 1 1 1|
+| H G F E D C|
+---------------------------
+
+Notes - This archive is of a bootleg copy,
+ - Japanese program revision
+ - Although the colour PROMs have the same checksums,
+ they are not the same.
+
+Main processor - Z80 @ 4MHz (8MHz OSC / 2)
+Sound processor - Z80 @ 1.789772MHz (14.31818MHz OSC / 8)
+ - YM2203C x2 @ 1.789772MHzMHz (14.31818MHz OSC / 8)
+
+Vsync: 62.65hz
+
+ CPU board: Jaleco made in japan ER-8736
+Video Board: Jaleco made in japan ER-8737
+
+***************************************************************************/
+
+
+ROM_START( skyfox )
+ ROM_REGION( 0x10000, "maincpu", 0 ) /* Main Z80 Code */
+ ROM_LOAD( "skyfox1.bin", 0x00000, 0x8000, CRC(b4d4bb6f) SHA1(ed1cf6d91ca7170cb7d1c80b586c11164430fd49) )
+ ROM_LOAD( "skyfox2.bin", 0x08000, 0x8000, CRC(e15e0263) SHA1(005934327834aed46b17161aef82117ee508e9c4) ) // identical halves
+
+ ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound Z80 Code */
+ ROM_LOAD( "skyfox9.bin", 0x00000, 0x8000, CRC(0b283bf5) SHA1(5b14d0beea689ee7e9174017e5a127435df4fbe3) )
+
+ ROM_REGION( 0x60000, "gfx1", 0 ) /* Sprites */
+ ROM_LOAD( "skyfox3.bin", 0x00000, 0x10000, CRC(3a17a929) SHA1(973fb36af416161e04a83d7869819d9b13df18cd) )
+ ROM_LOAD( "skyfox4.bin", 0x10000, 0x10000, CRC(358053bb) SHA1(589e3270eda0d44e73fbc7ac06e782f332920b39) )
+ ROM_LOAD( "skyfox5.bin", 0x20000, 0x10000, CRC(c1215a6e) SHA1(5ca30be8a68ac6a00907cc9e47ede0acec980f46) )
+ ROM_LOAD( "skyfox6.bin", 0x30000, 0x10000, CRC(cc37e15d) SHA1(80806df6185f7b8c2d3ab98420ca514df3e63c8d) )
+ ROM_LOAD( "skyfox7.bin", 0x40000, 0x10000, CRC(fa2ab5b4) SHA1(c0878b25dae28f7d49e14376ff885d1d4e3d5dfe) )
+ ROM_LOAD( "skyfox8.bin", 0x50000, 0x10000, CRC(0e3edc49) SHA1(3d1c59ecaabe1c9517203b7e814db41d5cff0cd4) )
+
+ ROM_REGION( 0x08000, "gfx2", 0 ) /* Background - do not dispose */
+ ROM_LOAD( "skyfox10.bin", 0x0000, 0x8000, CRC(19f58f9c) SHA1(6887216243b47152129448cbb4c7d52309feed03) )
+
+ ROM_REGION( 0x300, "proms", 0 ) /* Color Proms */
+ ROM_LOAD( "sfoxrprm.bin", 0x000, 0x100, CRC(79913c7f) SHA1(e64e6a3eb55f37984cb2597c8ffba6bc3bad49c7) ) // R
+ ROM_LOAD( "sfoxgprm.bin", 0x100, 0x100, CRC(fb73d434) SHA1(4a9bd61fbdce9441753c5921f95ead5c4655957e) ) // G
+ ROM_LOAD( "sfoxbprm.bin", 0x200, 0x100, CRC(60d2ab41) SHA1(e58a54f2aaee5c07136d5437e513d61fb18fbd9f) ) // B
+ROM_END
+
+ROM_START( exerizer )
+ ROM_REGION( 0x10000, "maincpu", 0 ) /* Main Z80 Code */
+ ROM_LOAD( "1.2v", 0x00000, 0x8000, CRC(5df72a5d) SHA1(ca35ac06f3702fd650a584da2f442fbc61c00fce) )
+ ROM_LOAD( "2.3v", 0x08000, 0x8000, CRC(e15e0263) SHA1(005934327834aed46b17161aef82117ee508e9c4) ) // 1-b
+
+ ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound Z80 Code */
+ ROM_LOAD( "9.5n", 0x00000, 0x8000, CRC(0b283bf5) SHA1(5b14d0beea689ee7e9174017e5a127435df4fbe3) ) // 1-i
+
+ ROM_REGION( 0x60000, "gfx1", 0 ) /* Sprites */
+ ROM_LOAD( "3-1.7w", 0x00000, 0x10000, CRC(3a17a929) SHA1(973fb36af416161e04a83d7869819d9b13df18cd) )
+ ROM_LOAD( "4.7u", 0x10000, 0x10000, CRC(358053bb) SHA1(589e3270eda0d44e73fbc7ac06e782f332920b39) ) // 1-d
+ ROM_LOAD( "5-1.7t", 0x20000, 0x10000, CRC(c1215a6e) SHA1(5ca30be8a68ac6a00907cc9e47ede0acec980f46) )
+ ROM_LOAD( "6.7s", 0x30000, 0x10000, CRC(cc37e15d) SHA1(80806df6185f7b8c2d3ab98420ca514df3e63c8d) ) // 1-f
+ ROM_LOAD( "7.7p", 0x40000, 0x10000, CRC(c9bbfe5c) SHA1(ce3f7d32baa8bb0bfc110877b5b5f4648ee959ac) )
+ ROM_LOAD( "8.7n", 0x50000, 0x10000, CRC(0e3edc49) SHA1(3d1c59ecaabe1c9517203b7e814db41d5cff0cd4) ) // 1-h
+
+ ROM_REGION( 0x08000, "gfx2", 0 ) /* Background - do not dispose */
+ ROM_LOAD( "10.5e", 0x0000, 0x8000, CRC(19f58f9c) SHA1(6887216243b47152129448cbb4c7d52309feed03) ) // 1-j
+
+ ROM_REGION( 0x300, "proms", 0 ) /* Color Proms */
+ ROM_LOAD( "r.1c", 0x000, 0x100, CRC(79913c7f) SHA1(e64e6a3eb55f37984cb2597c8ffba6bc3bad49c7) ) // 2-bpr
+ ROM_LOAD( "g.1b", 0x100, 0x100, CRC(fb73d434) SHA1(4a9bd61fbdce9441753c5921f95ead5c4655957e) ) // 3-bpr
+ ROM_LOAD( "b.1d", 0x200, 0x100, CRC(60d2ab41) SHA1(e58a54f2aaee5c07136d5437e513d61fb18fbd9f) ) // 1-bpr
+ROM_END
+
+ROM_START( exerizerb )
+ ROM_REGION( 0x10000, "maincpu", 0 ) /* Main Z80 Code */
+ ROM_LOAD( "1-a", 0x00000, 0x8000, CRC(5df72a5d) SHA1(ca35ac06f3702fd650a584da2f442fbc61c00fce) )
+ ROM_LOAD( "skyfox2.bin", 0x08000, 0x8000, CRC(e15e0263) SHA1(005934327834aed46b17161aef82117ee508e9c4) ) // 1-b
+
+ ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound Z80 Code */
+ ROM_LOAD( "skyfox9.bin", 0x00000, 0x8000, CRC(0b283bf5) SHA1(5b14d0beea689ee7e9174017e5a127435df4fbe3) ) // 1-i
+
+ ROM_REGION( 0x60000, "gfx1", 0 ) /* Sprites */
+ ROM_LOAD( "1-c", 0x00000, 0x10000, CRC(450e9381) SHA1(f99b2ca73f1e4ba91b8066bb6d28d33b66a3ee81) )
+ ROM_LOAD( "skyfox4.bin", 0x10000, 0x10000, CRC(358053bb) SHA1(589e3270eda0d44e73fbc7ac06e782f332920b39) ) // 1-d
+ ROM_LOAD( "1-e", 0x20000, 0x10000, CRC(50a38c60) SHA1(a4b8d530914d6c85b15940a7821b4365068de668) )
+ ROM_LOAD( "skyfox6.bin", 0x30000, 0x10000, CRC(cc37e15d) SHA1(80806df6185f7b8c2d3ab98420ca514df3e63c8d) ) // 1-f
+ ROM_LOAD( "1-g", 0x40000, 0x10000, CRC(c9bbfe5c) SHA1(ce3f7d32baa8bb0bfc110877b5b5f4648ee959ac) )
+ ROM_LOAD( "skyfox8.bin", 0x50000, 0x10000, CRC(0e3edc49) SHA1(3d1c59ecaabe1c9517203b7e814db41d5cff0cd4) ) // 1-h
+
+ ROM_REGION( 0x08000, "gfx2", 0 ) /* Background - do not dispose */
+ ROM_LOAD( "skyfox10.bin", 0x0000, 0x8000, CRC(19f58f9c) SHA1(6887216243b47152129448cbb4c7d52309feed03) ) // 1-j
+
+ ROM_REGION( 0x300, "proms", 0 ) /* Color Proms */
+ ROM_LOAD( "sfoxrprm.bin", 0x000, 0x100, CRC(79913c7f) SHA1(e64e6a3eb55f37984cb2597c8ffba6bc3bad49c7) ) // 2-bpr
+ ROM_LOAD( "sfoxgprm.bin", 0x100, 0x100, CRC(fb73d434) SHA1(4a9bd61fbdce9441753c5921f95ead5c4655957e) ) // 3-bpr
+ ROM_LOAD( "sfoxbprm.bin", 0x200, 0x100, CRC(60d2ab41) SHA1(e58a54f2aaee5c07136d5437e513d61fb18fbd9f) ) // 1-bpr
+ROM_END
+
+
+/* Untangle the graphics: cut each 32x32x8 tile in 16 8x8x8 tiles */
+DRIVER_INIT_MEMBER(skyfox_state,skyfox)
+{
+ UINT8 *rom = memregion("gfx1")->base();
+ UINT8 *end = rom + memregion("gfx1")->bytes();
+ UINT8 buf[32 * 32];
+
+ while (rom < end)
+ {
+ for (int i = 0; i < (32 * 32); i++)
+ buf[i] = rom[(i % 8) + ((i / 8) % 8) * 32 + ((i / 64) % 4) * 8 + (i / 256) * 256];
+
+ memcpy(rom, buf, 32 * 32);
+ rom += 32 * 32;
+ }
+}
+
+
+GAME( 1987, skyfox, 0, skyfox, skyfox, skyfox_state, skyfox, ROT90, "Jaleco (Nichibutsu USA license)", "Sky Fox", MACHINE_SUPPORTS_SAVE )
+GAME( 1987, exerizer, skyfox, skyfox, skyfox, skyfox_state, skyfox, ROT90, "Jaleco", "Exerizer (Japan)", MACHINE_SUPPORTS_SAVE )
+GAME( 1987, exerizerb, skyfox, skyfox, skyfox, skyfox_state, skyfox, ROT90, "bootleg", "Exerizer (bootleg)", MACHINE_SUPPORTS_SAVE )