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CVS2 Naomi linked freezes

I bet some of the people that are saying the game works for them are not running the game in JVS link at all.

JVS linking means daisy chaining two JVS IO boards. 1P controls are connected to IO board #1, 2P controls to IO board #2. It's only really practical if you have two cabs.
 
Thanks for the input @nem, I thought linking meant you got 1P and 2P one one IO and 3P and 4P on the other ?
 
@rtw the JAMMA IO converter is a TD-IO or a Capcom IO, which is a JAMMA / JVS convertor that takes JAMMA input and translates to JVS standard and is fed In to the Naomi.

@nem is correct; I don;t think a lot of people are linking JVS I/Os when they are saying its "working" for them, I am doing exactly that daisy chaining JVS IO from 2 machines for a head to head set up. Both direct linking and using the sea link boards exhibit locking up. And im not sure how long others are running their test sessions, but as @VodkaGobalsky can attest I am legit running these in my commercial arcade and the community jams on it hard, 6-7 hour long sessions
 
and its literally only CVS2, I;ve tried a bunch of other games and did hour-long testing and not a single issue (~5 hour sessions)
 
@JohnRambo'sKnife are you local to NorCal? if you are, I'd love to take a look at your set up? or you can come down to the arcade and take a look? we can't get it stable at all, it consistently freezes and locks out
 
These guys are my arcade qa for this, hours long session constantly. like I said, sometimes it'll lock up in the first 30 minutes, other times it'll go for 2-3 hours and then lock up, but it ALWAYS locks up at some point in a long sessions and will do so multiple times. So it works, until it doesn't.
 

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keiichi331 said:
1, Voltage - have had my volatges dialed in to 5.05v and 3.34v and I have upped it to 5.15 and 3.38 and it still locks up
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I would advise against overvolting anything that isn't MVS, especially Naomi. 5.15v is probably too high for extended use.

rtw said:
@keiichi331 can you explain (preferably with a picture) what you mean by a JAMMA IO converter ?
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1756870615816.jpeg

nem said:
I bet some of the people that are saying the game works for them are not running the game in JVS link at all.

JVS linking means daisy chaining two JVS IO boards. 1P controls are connected to IO board #1, 2P controls to IO board #2. It's only really practical if you have two cabs.
Click to expand...

Cyberleads are JVS-only (no, I wasn't using the JAMMA converters) so I am not sure how else the games would work with cabinet link.

VodkaGobalsky said:
People probably be running through arcade mode once and call it a day.
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keiichi331 said:
And im not sure how long others are running their test sessions, but as @VodkaGobalsky can attest I am legit running these in my commercial arcade and the community jams on it hard, 6-7 hour long sessions
Click to expand...

Did either of you bother to read my post? I very clearly specifically said I had people mashing on cabs using JVS for 8+ hours a day.

And, Vodka - If you just want to make snarky replies and hand-wave away people who are legitimately trying to help, be my guest. I'll just see myself out.
 
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kazuo said:
I would advise against overvolting anything that isn't MVS, especially Naomi. 5.15v is probably too high for extended use.



1756870615816.jpeg



Cyberleads are JVS-only (no, I wasn't using the JAMMA converters) so I am not sure how else the games would work with cabinet link.




Did either of you bother to read my post? I very clearly specifically said I had people mashing on cabs using JVS for 8+ hours a day.

And, Vodka - If you just want to make snarky replies and hand-wave away people who are legitimately trying to help, be my guest. I'll just see myself out.
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I totally read your post bro I just can’t reproduce your results :( in fact my benchmark was your stated 8 hour session

No one is being snarky. Personally I’m frustrated at the situation and why there is so little info and no one seem to know why it does and doesn’t work (definition of unstable)

I ran a range of voltages to see that might be the issue , so it was a range on both the 5v and the 3.3v

All I got thus far is “works here” but nothing much else to key off of. This post is to share what I’ve done and if someone can provide insight as to something else I can try if I’ve missed anything
 
Thank you @keiichi331 for the explanation on the JAMMA IO, the td-io is very nice, I own one.

One thing I do not understand is the mapping on the linked JVS IO boards.

If I link two JVS IO PCBs I will get support for player 1 and 2 on JVS IO 1 and player 3 and 4 on JVS IO 2

Since the game only supports 2 players how does the game allocate player 3 on JVS IO 2 to player 2 in the game ?

BTW:
If you were not aware of it the CAPCOM IO has a lag of one frame.
 
that 1 frame on a capcom io is negligable. noone will feel a difference playing while using it unless they can physically see the capcom io and know the internet says its 1 frame of lag, then magically they can feel the 1 frame of lag. ive had the top players in MVC2 and CVS 2 in new england come to my arcade and they were all able to do the crazy shit they do just fine on my setups. imo the capcom io is a very valid io to use, especially if u wanna utilize the cps2 harness like i did in my use case.
 
We’re not using a jamma IO for the net cities. It’s running off of pure JVS into the Sega IOs. Our best bet right now is still to tap the JVS signal when it freezes to try to see what’s going on. Mine hasn’t frozen yet since Keiichi gave me his other IO.
 

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rtw said:
Thank you @keiichi331 for the explanation on the JAMMA IO, the td-io is very nice, I own one.

One thing I do not understand is the mapping on the linked JVS IO boards.

If I link two JVS IO PCBs I will get support for player 1 and 2 on JVS IO 1 and player 3 and 4 on JVS IO 2

Since the game only supports 2 players how does the game allocate player 3 on JVS IO 2 to player 2 in the game ?

BTW:
If you were not aware of it the CAPCOM IO has a lag of one frame.
Click to expand...
When linking 2 player JVS games, it typically assigns player 1 to player 1 on the master io and player 2 to player 1(3) on the slave io. player 2/4 are unused.
 
If the assignments in the link is incorrect, wouldn't it just not work altogether? That wouldn't explain why it would stop working randomly after it's already been working.
 
For clarity sake, here is my set up

1x Naomi set up in NNC1, that has a single player panel (to be more explicit, I only have the 1p harness hooked up as its a a single player panel)
1x Sega JVS in NNC1, that is connected to the Naomi board from USB C Header on the IO -> USB A on the Naomi board


NNC2 is also a 1 player panel and only has 1P harness connected. it has its own JVS IO

NNC2 JVS IO USB C -----> NNC1 JVS IO USB A (linking the 2 JVS)

When you go in to the JVS test for Naomi, you get check NODE 1 controls and it show up as 1P controls on NNC1, then you select NEXT NODE and NNC2 controls are being registered as player 1 on the JVS Test.

This works to connect and link JVS IOs with 2 machines
 
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