MV1C weird behavior: games with protection not working

Misos

New Challenger
Joined
Aug 17, 2018
Posts
57
I'm having a weird problem with this MV1C.
Some games refuse to work with it, specialy games with copy protection, Like Kof 2000, MEtal Slug X, Kof 98, etc. Multcarts like the 161 in 1 won't work either, it gets stuck on a black screen.

Normal games without the protection works fine, like Metal Slug 2, Kof 95, etc.
I have already swaped the backup ram and the 74hc32.

No errors using the Diag Bios, and the voltage is good, as other boards and carts works flawlessly.

I apreciate any ideas or sugestions.
 

Jonap

Mega Shock!!
Joined
Oct 10, 2006
Posts
100
I'm having a weird problem with this MV1C.
Some games refuse to work with it, specialy games with copy protection, Like Kof 2000, MEtal Slug X, Kof 98, etc. Multcarts like the 161 in 1 won't work either, it gets stuck on a black screen.

Normal games without the protection works fine, like Metal Slug 2, Kof 95, etc.
I have already swaped the backup ram and the 74hc32.

No errors using the Diag Bios, and the voltage is good, as other boards and carts works flawlessly.

I apreciate any ideas or sugestions.

In past i have same problem, acces to service menu of MVS, clear ram backup and done, maybe in some cases you need to put it a new battery too with the clear ram backup.
 
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