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Misos

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Hello, I'm trying to fix a dead KOF 98 with a donor PROGBK1 board.

I have 2 dead Kof 98 carts, both use the PROGSF1 chip and both boot directly to the cross hatch screen.

I have desoldered the P and V roms from both carts and to save the hassle of desoldering them again if something goes wrong I've dumped the roms to check if everything is OK.

I selected the 27c322 chip in my TOP3000 to read them and none of them except the P rom matches the CRC from the Mame romset.

But both non working sets have the same CRC.

Aren't V roms supposed to be the same in all romsets? Am i doing something wrong or the v roms are just dead?
 
Depending on what chips the V rom are, you may have to do some extra stuff...

This is instructions for dumping V ROM TC5332204 with a Top3000:
Help dumping Neogeo Roms with Top3000
Thank you, I was able to dump the roms correctly. Now the CRC matches.
I don't have any 27C160 to burn the P-rom, only 27c322 and 27c4096.

This is what I'm attempting to do:

https://wiki.neogeodev.org/index.php?title=Repairing_King_of_Fighters_'98

Just like you did I will have to buy some 27c160 and see if it works.
 
Do you just need one?
I could send you one of my spares for free.
 
Ok! They are definitely a useful IC to keep around!
Hope it works out for you.
 
Ok, I'm a little bit confused.
The wiki says that i have to use a 27c160 but the unencrypted rom is 1MB.
Should i Mirror the rom or is it ok to just burn it as it is?
 
You should double the rom or use a 27C800.
 
Ok, so I salvaged 3 27c160 from a Kof 2002 bootleg that I had laying around.

I've replaced the p1.
Using unibios the game boots but crashes before you can do anything (expetion error handling).
In rare ocasions it passes the intro but crashes afterwards.

On the Unibios CRC screen the "ROm Region" checks as NG, the other roms checks as OK.

With the stock Bios it keeps reseting.

I replaced the p2 with a 27c322 but got the same result.
I'm following this, do I have to change something since I'm using a 27c160 instead of the stock 27c800?
 
Have you jumpered the prog board correctly?
Make sure all jumpers are in the same position as the scan above.
 
I did, burned the roms several times and nothing.

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TH57FbA.jpg
 
Ok, so I salvaged 3 27c160 from a Kof 2002 bootleg that I had laying around.

I've replaced the p1.
Using unibios the game boots but crashes before you can do anything (expetion error handling).
In rare ocasions it passes the intro but crashes afterwards.

On the Unibios CRC screen the "ROm Region" checks as NG, the other roms checks as OK.

With the stock Bios it keeps reseting.

I replaced the p2 with a 27c322 but got the same result.
I'm following this, do I have to change something since I'm using a 27c160 instead of the stock 27c800?
Did you double up the P1 rom file before burning it to the 27c160?
 
I did, I don't think that's the problem.
Oddly In my MV1-c it will play the intro and show the menu and crash if you move the joystick. In my mv1fz with default bios it keeps reseting and in my mv1a with unibios it crashes in the boot screen.
I think it may be some other component fault.
 
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Could be the protection custom. Could also be that it’s just dirty, have you cleaned the cart edge properly?
 
I have transplanted the roms to a PROGBK1, with a unencrypted P Rom, so there's no need to an Altera chip.
I cleaned the cart edge too.
I'm gonna wait to the eproms arrive from China or if I come across another PROG pcb I will try again.
I will set this cart aside for now.
 
I have reprogammed the p1 using a 27c800 this time and now it (sort) of works.
In console mode that is. In arcade mode i got a black screen and then it crashes, sometimes
it shows this screen:
Img02701o.jpg

At least is working in console mode.

And for my luck my Metal Slug X seems to have died too, since I got a black screen when i try to play it.
I will try to replace the p1 before removing the maskrons to a donor board. Removing Maskroms with a desoldering pump sucks.

Edit: My Mv1c was the fault, dead backup ram. Works fine with my other Mvs.
 
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