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best bios for naomi 2?
Posted: Sat Sep 02, 2006 8:52 am
by OldFoo
hello
what is the best bios for naomi 2?
thanks
arnaud
Posted: Sat Sep 02, 2006 5:54 pm
by OldFoo
The Japanese bios works with nearly everything. Although some games don't work with the Export bios (not many), multi-lingual games will show up as english.
Personally, I use the Export version and all my games work.
I hope this helps!

Posted: Sun Sep 03, 2006 5:05 am
by OldFoo
great thanks!
Posted: Tue Oct 03, 2006 11:41 am
by OldFoo
joshua3dg wrote:The Japanese bios works with nearly everything. Although some games don't work with the Export bios (not many), multi-lingual games will show up as english.
Personally, I use the Export version and all my games work.
I hope this helps!

Hi,
I have the 23068B (that is EXP) bios for Naomi 2 and nothing is going to work
just 2 or 3 games and one of this is virtua tennis.
when I put gd-reader I can see black screen and not the NAOMI 2 Logo GD-ROM SYSTEM , You klnow why ?
Thank You for help me.
Posted: Tue Oct 03, 2006 12:36 pm
by OldFoo
I'd say Export Bios as well, unless you play a lot of the Japan only games..
Buts its wise to have both BIOSes.
Siggy12, sounds like your BIOS is not correct, 23068B??
You mean 23608B?? Then that is fine for Naomi 2 GD-ROM, sounds like your BIOS chip is faulty.
Posted: Tue Oct 03, 2006 12:43 pm
by OldFoo
yes you are right ,I do a mistake is 23608B and with cartridge workwith Naomi GD-Rom don't go nothing on video but I can listen D-drive load the rom, maybe don't show nothing to a plasma tv ?
ot maybe because I don't have the Sega I / O power don't o ahead to put out video output ?
when I insert a cartridge I can read the message "Error 02" and if is this bios compatibile I can read the message "Jamma IO not found", with the gd-drive and dimm board i just can see black screen
someone know why ?
Posted: Tue Oct 03, 2006 2:57 pm
by OldFoo
Faulty Dimm board??
What game gives you Error 02??
Posted: Tue Oct 03, 2006 6:53 pm
by OldFoo
sorry Andy for later answer but I had to test this software

.
game not working are say taht "this game cannot run into this main board"
Zombie revenge Rom cartrdidge
Toukon retsuden 4 arcade edition rom cartridge
Working are.. (ask Sega I/O) only gun survivor 2 is starting in attraction mode
Virtua tennis Rom Cartridge
Slash out rom cartridge
mobile suit gundam The earth federation vs the prinicipality of ZEON rom cartridge
Guilty gear X Rom Cartridge
Gun survivor 2 bio hazard code veronica rom cartridge
Posted: Tue Oct 03, 2006 6:55 pm
by OldFoo
sorry I forget,
is there a way to power sega I/O with atc pc power supply aniway ?
Posted: Tue Oct 03, 2006 7:02 pm
by OldFoo
Siggy12 wrote:sorry Andy for later answer but I had to test this software

.
game not working are say taht "this game cannot run into this main board"
Zombie revenge Rom cartrdidge
Toukon retsuden 4 arcade edition rom cartridge
Working are.. (ask Sega I/O) only gun survivor 2 is starting in attraction mode
Virtua tennis Rom Cartridge
Slash out rom cartridge
mobile suit gundam The earth federation vs the prinicipality of ZEON rom cartridge
Guilty gear X Rom Cartridge
Gun survivor 2 bio hazard code veronica rom cartridge
Out of that list, only Touken Retsuden 4 is Japan bios only, Zombie Revenge works on all BIOSes.
Yeah, you can use a PC Power supply to power the Naomi, you use one of the floppy disk drive 4 pin connectors, but you need to modify it the pins.
On the I/O you need to power CN7 4pin JST NH connector (5V Power in)
Its wiring is as follows:
01 +5v
02 +5v
03 GND
04 GND
I assume you are using the dedicated Naomi I/O, Part #837-13551-92