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Nova 2001 (Japan, hack?) [system11]

looks like an unofficial fix for a bug in the original, presumably because ops were finding the game unreliable??
This commit is contained in:
David Haywood 2016-01-07 13:46:59 +00:00
parent 9f417b91af
commit 868bc6593a
2 changed files with 28 additions and 2 deletions
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1
src/mame/arcade.lst
View File

@ -8234,6 +8234,7 @@ jackrabts // (c) 1984
mouser // UPL-83001 (c) 1983
mouserc // UPL-83001 (c) 1983
nova2001 // UPL-83005 (c) 1983
nova2001h // hack?
nova2001u // UPL-83005 (c) [1983] + Universal license
ninjakun // UPL-84003 (c) 1984 Taito Corporation
raiders5 // UPL-85004 (c) 1985

29
src/mame/drivers/nova2001.cpp
View File

@ -60,6 +60,8 @@ Notes:
- nova2001 is VERY sensitive to coin inputs, if the coin isn't held down long
enough, or is held down too long the game will reset, likewise if coins are
inserted too quickly. This only happens in nova2001 and not in nova2001u.
(the nova2001h set seems to be an unofficial fix for this issue, presumably
it's so sensitive it would reset sometimes in the original cabinet?)
- Nova 2001 draws black bars on the sides of the screen so the visible area becomes
240x192, however the physical resolution is still 256x192, the game probably does
@ -312,7 +314,7 @@ static INPUT_PORTS_START( nova2001 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
PORT_START("IN2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(4)
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(4)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x78, IP_ACTIVE_LOW, IPT_UNUSED )
@ -816,6 +818,26 @@ ROM_START( nova2001 )
ROM_LOAD( "nova2001.clr", 0x0000, 0x0020, CRC(a2fac5cd) SHA1(ad14aa2be57722d1f48b47171fe72f96091423b6) )
ROM_END
ROM_START( nova2001h )
ROM_REGION( 0x10000, "maincpu", 0 )
// roms 1 and 2 had green stickers, but looks like an unofficial mod, bytes have been added in empty space to fix game checksum after mods were made to code.
// one of the mods fixes the game resetting if the coin input is held down for too short / long of a period, the purpose of the other is unknown.
ROM_LOAD( "1(green).6c", 0x0000, 0x2000, CRC(1a8731b3) SHA1(a865d1cb070686dfa19e0da887c599455692a860) )
ROM_LOAD( "2(green).6d", 0x2000, 0x2000, CRC(bc4e442b) SHA1(6e1dca5dde442db95403377bf49aaad2a337813e) ) // not actually modified?
ROM_LOAD( "3.6f", 0x4000, 0x2000, CRC(b2849038) SHA1(b56c7c03ef7c677cc6df0280a485f9cda3435b23) )
ROM_LOAD( "4.6g", 0x6000, 0x1000, CRC(6b5bb12d) SHA1(74aee3d08a7ee1f98eaec4a4b3062aa9d17948ec) )
ROM_RELOAD( 0x7000, 0x1000 ) // half size ROM, mirrored
ROM_REGION( 0x8000, "gfx1", 0 )
ROM_LOAD16_BYTE( "5.12s", 0x0000, 0x2000, CRC(54198941) SHA1(fe762a0bbcf10b13ece87ded2ea730257cfbe7d3) )
ROM_LOAD16_BYTE( "6.12p", 0x0001, 0x2000, CRC(cbd90dca) SHA1(7eacde832f5783f4389fb98d6bf6b26dd494665d) )
ROM_LOAD16_BYTE( "7.12n", 0x4000, 0x2000, CRC(9ebd8806) SHA1(26b6caa0d0a7ae52a182070ecc7bc696c12038b3) )
ROM_LOAD16_BYTE( "8.12l", 0x4001, 0x2000, CRC(d1b18389) SHA1(2d808fee774f1bb4cec42e23cfef36b54eee0efa) )
ROM_REGION( 0x0020, "proms", 0 )
ROM_LOAD( "nova2001.clr", 0x0000, 0x0020, CRC(a2fac5cd) SHA1(ad14aa2be57722d1f48b47171fe72f96091423b6) )
ROM_END
ROM_START( nova2001u )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "nova2001.1", 0x0000, 0x2000, CRC(b79461bd) SHA1(7fac3313bc76612f66a6518450d0fed32fe70c45) )
@ -995,8 +1017,11 @@ DRIVER_INIT_MEMBER(nova2001_state,raiders5)
*
*************************************/
// many of these don't explicitly state Japan, eg. Nova 2001 could easily be used anywhere.
// YEAR, NAME, PARENT, MACHINE, INPUT, INIT, MONITOR,COMPANY,FULLNAME,FLAGS
GAME( 1983, nova2001, 0, nova2001, nova2001, driver_device, 0, ROT0, "UPL", "Nova 2001 (Japan)", MACHINE_SUPPORTS_SAVE )
GAME( 1983, nova2001, 0, nova2001, nova2001, driver_device, 0, ROT0, "UPL", "Nova 2001 (Japan)", MACHINE_SUPPORTS_SAVE )
GAME( 1983, nova2001h, nova2001, nova2001, nova2001, driver_device, 0, ROT0, "UPL", "Nova 2001 (Japan, hack?)", MACHINE_SUPPORTS_SAVE )
GAME( 1983, nova2001u, nova2001, nova2001, nova2001, driver_device, 0, ROT0, "UPL (Universal license)", "Nova 2001 (US)", MACHINE_SUPPORTS_SAVE )
GAME( 1984, ninjakun, 0, ninjakun, ninjakun, driver_device, 0, ROT0, "UPL (Taito license)", "Ninjakun Majou no Bouken", MACHINE_SUPPORTS_SAVE )
GAME( 1985, pkunwar, 0, pkunwar, pkunwar, nova2001_state, pkunwar, ROT0, "UPL", "Penguin-Kun Wars (US)", MACHINE_SUPPORTS_SAVE )