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Naomi 2 Freezing during attract mode

timsithD

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Hi Folks,

I am the proud new owner of an Initial D ver 3 (Single Cab) from Japan. It is running Initial D ver 3 via the GDROM. I have added a multi bios as in the future I am hoping to netboot into some other Naomi Drivers.

The issue I have is the game plays fine. I can run multiple races, cards work, everything from what I can tell is good. However without fail once I reach a certain point when the game is in attract mode the entire system locks up and nothing works. No service or test button and the screen is frozen. Power cycling the entire cabinet fixes it until it reaches the same point in attract mode.

I have used two different DIMMS to rule that out and the issue occurs no matter which dimm board is in. So to me it seems like one of two issues. 1. The Naomi it's self has some sort of issue (Ram or something of the like) 2. Perhaps the multibios is causing this issue? (See the links below as these seem to pinpoint similar issues but not exactly).

Also Ram tests on both the Naomi and the Dimm boards come back as Good.

Does anyone know if using a multibios with a GDROM IDAS VER3 (Japan) will cause the entire system to lock up during attract mode? I haven't switched back to the original Japanese BIOS that came with the game yet. Is that worth trying? (It is currently set to Japan in the bios / the filter board is set for that as well). Overall it isn't a terrible issue as like I said I can get in hours of play with no problem, I just think about when I might have folks over or if I just want to have my home arcade in attract mode to make a bunch of noise and such :) all my pinball games have the attract mode music on so it is interesting once everything gets going.

Thanks!

Lock Up issue described in this thread (MultiBIOS):
https://forum.arcadeotaku.com/viewt...sid=f00668d19b749a3808e52ff32e6c697e&start=40

Very Similar issue that was fixed by Ken at irepair Sega by changing out Ram Chips on the mobo. I am very tempted to send my Naomi to him.
https://forums.arcade-museum.com/showthread.php?t=365150&page=2
 
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Here is where it dies. It seems to try and fade the screen a bit and then it just locks up. Every single time on this exact screen. Same moment.
WAPRFSmMprS565hELZ3KJRQ258BDV0g1D3_QZdE9R6RVU25dZ2xDSIeMZUJytKopDHKLkQj3xtz-gmzD-jR5pyaa3dOvCu5-LZigG-8VHUyQPiCqqNUbSxQVwx5PQQPa34g9z0icIYl56wvNdrY8b6WwVMul0x-Au_mSfIwSRubNOLDoVRvReueAMfjht0Vpf78Qr6MDI7Ca-npDZfAIteDKPoIOhollZVYFCLmEmQAawrbHJcYWrZbOoABD8AwPklMBbB7tiTQM7J0Bw-YeUxrlLZ997yd_dx3fXiKyCqixpJjo8249-a_q-h_8MAhEGPCu5UhffmqBoyxLUJaCel_qYAVwMILSeOsxDCMgvfR04uNV7zXOR9R0YuZdc1ZD83ruW-hZecmxJ5Hh1zIFmkp3ihW2J-IzsuhBTb06JN8Zk4-ycKh8iWjkz1Ft3qRdfwyBNYaHddL2FtYfnw_h8uqGeHU8zHl2z8cXeCeWZ7DhRXadyFSsPy7IDeNshg8BKYuatIVZLDCP13DZBFVjAbFRou-wdoZ2G6X2mDGtsW3MexwPVlCz59DCf4-EUt_m52YIMWtMtMq2lXyRG6Y0fzbD7IIwRw6WYx2Kyr6st7d7VkfKsqpzCyKKgh87Ucg4XugvLND-_YvQw3ARnXwRSBSh-HcEEd4=w470-h626-no
 
Interesting. I'm net booting into the Export (USA) version and it now freezes just as you described. Right after a replay. I might try a USA BIOS and see if that resolves the issue. I agree though it is a pretty minor issue. I just don't like to walk back up to my games and see them basically stuck hahaha. Thanks a ton for commenting. I was starting to think it was just me.
 
It's funny you should mention that. I just recapped the Naomi's power supply a few nights ago and since then I have not got the issue to reoccur. So at this point I am watching to see what the deal is.
 
STOP.... i just went through this a while back....

if you run the japanese version use the japanese C version bios.
if you run the export version use the export C verision bios for export. do not run the usa bios as there is a shut down for around 6 hrs later.

dont use the multi bios with inital d 2 or 3.
 
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STOP.... i just went through this a while back....

if you run the japanese version use the C version bios.
if you run the export version use the C verision bios for export. do not run the usa bios as there is a shut down for around 6 hrs later.

dont use the multi bios with inital d 2 or 3.
so I'm running ID3 Export. So should I be running the USA rev c bios in the naomi?
 
I think I get what he is saying now. I am going to get a EPR-23608C burned and see if that fixes the issue. I bought a whole extra Naomi and it has the multi bios installed as well and has the exact same freezing issue. My guess is the moment I pop this in and redo everything there will no longer be any issue.
 
so I'm running ID3 Export. So should I be running the USA rev c bios in the naomi?
no.

running ID3 Export. you should be using Export bios.

i see you got in in your second post. EPR-23608C is the export bios and the correct bios.
 
Sure did running the rev c bios as discussed totally resolved the issue. Must be something in the multibios the game doesn't like oh well no biggie. Thanks a ton to Rocket for all the help! Very happy it is all fixed.
 
There are quite a few games that dont like the multibios. Also thanks you confirmed for me that my naomi 2 doesnt have issues.
 
Is this still true? There are so few Naomi 2 games you would think whoever created the multibios could have tested then all.
 
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