Cmvs not saving region

RAZO · Aug 31, 2016

I have a omega w/ virtual memory card that is not saving the region. I usually set mine as Japan-Arcade and it keeps going back to Europe. My other units usually save the region with the memory card.

wyo · Aug 31, 2016

RAZO said:
I have a omega w/ virtual memory card that is not saving the region. I usually set mine as Japan-Arcade and it keeps going back to Europe. My other units usually save the region with the memory card.

Reset the backup RAM. If that doesn't work, replace the MV1C battery <-- not sure if the Omega uses the battery but mine still had the original installed, so coin cell mod may be required.

RAZO · Aug 31, 2016

I forgot how to reset the back up ram. Is that when you flip the dip switch or can I do that through the unibios?

Xian Xi · Aug 31, 2016

You might just need to charge the battery longer.

Niko · Aug 31, 2016

The problem is that the MV1C leaks current from the backup circuit like crazy. A normal CR232 only last about ~5days.

I had to put a huge 4400Mah battery pack and charging circuit in my CMVS.

Xian Xi · Aug 31, 2016

Niko49 said:
The problem is that the MV1C leaks current from the backup circuit like crazy. A normal CR232 only last about ~5days.

I had to put a huge 4400Mah battery pack and charging circuit in my CMVS.

It depends on the brand of RAM. Some RAM types will last less than two weeks while others, 2-3 years.

GohanX · Aug 31, 2016

RAZO said:
I forgot how to reset the back up ram. Is that when you flip the dip switch or can I do that through the unibios?

IIRC press BCD on bootup, select hardware test. You should see color bars. If you press 1P Start it will go through a few tests and eventually you'll have the option to clear the memory by pressing ABC or something like that.

RAZO · Aug 31, 2016

Thank guys. I'll reset the backup ram and if that doesn't work I'll try messing with battery next time I open the unit.

Liquid Snake · Aug 31, 2016

I have this issue since day 1, and I get used to it..................

xsq · Sep 1, 2016

Gummy Bear had an interesting (overkill) solution if you have the power hungry ram...

Razoola · Sep 1, 2016

Maybe in the next unibios I should do a check on MVS hardware that if the region and other settings are not found in backup RAM to see if they exist in the memory card.

Niko · Sep 1, 2016

Razoola said:
Maybe in the next unibios I should do a check on MVS hardware that if the region and other settings are not found in backup RAM to see if they exist in the memory card.

That would be amazing!!

Cmvs not saving region

RAZO

Mayor of Southtown

wyo

King of Spammers

RAZO

Mayor of Southtown

Xian Xi

JammaNationX,

Niko

Whip's Subordinate

Xian Xi

JammaNationX,

GohanX

Horrible Goose

RAZO

Mayor of Southtown

Liquid Snake

I am untouchable

xsq

Thou Shalt Not, Question Rot.,

Razoola

Divine Hand of the UniBIOS,

Niko

Whip's Subordinate