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the new borencha set doesn't properly initialize NVRAM if it is invalid causing sound to fail if the content is corrupt, I guess it's an older set (nw)

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This commit is contained in:
David Haywood 2014-04-20 01:55:43 +00:00
parent ce6e031021
commit 9a90298891
1 changed files with 2 additions and 2 deletions
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4
src/mame/drivers/segac2.c
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@ -1462,7 +1462,7 @@ static MACHINE_CONFIG_START( segac, segac2_state )
MCFG_MACHINE_START_OVERRIDE(segac2_state,segac2)
MCFG_MACHINE_RESET_OVERRIDE(segac2_state,segac2)
MCFG_NVRAM_ADD_RANDOM_FILL("nvram")
MCFG_NVRAM_ADD_1FILL("nvram") // borencha requires 0xff fill or there is no sound (it lacks some of the init code of the borench set)
MCFG_DEVICE_ADD("gen_vdp", SEGA315_5313, 0)
MCFG_SEGA315_5313_IS_PAL(false)
@ -2368,7 +2368,7 @@ GAME( 1990, tfrceacj, tfrceac, segac2, tfrceac, segac2_state, tfrceac, ROT0,
GAME( 1990, tfrceacb, tfrceac, segac2, tfrceac, segac2_state, tfrceacb, ROT0, "bootleg", "Thunder Force AC (bootleg)", 0 )
GAME( 1990, borench, 0, segac2, borench, segac2_state, borench, ROT0, "Sega", "Borench (set 1)", 0 )
GAME( 1990, borencha, borench, segac2, borench, segac2_state, borench, ROT0, "Sega", "Borench (set 2)", GAME_NO_SOUND ) // why doesn't the sound play on this set?
GAME( 1990, borencha, borench, segac2, borench, segac2_state, borench, ROT0, "Sega", "Borench (set 2)", 0 )
GAME( 1991, twinsqua, 0, segac2, twinsqua, segac2_state, twinsqua, ROT0, "Sega", "Twin Squash", 0 )