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应该不是16245损坏，而是rom损坏。

Thank you very much, big shot. I have a Giant Gram 2000,This cassette is the 7978b model. When I usually use 171-7919 to convert MVC2, all I need is a ROM 1 and an unlocked ic22 to run it. But it won't start on the Giant Gram 2000 card. I compared the official ROMs of versions 7919a and 7978b...

So, can the decrypted game using the same 171-7978b be converted to my 7978b? I burned the ROM of MVC2 from 7978b to my 7978b, and ic11 used the ic22 EOROM you decrypted from 7919, but the game cannot start and can only enter test mode. It may be related to ACTEL's encryption chip.

I have encountered this problem before, and I dismantled IC30 and IC29 to solve it.

I contacted my boss and he has started providing the adapter board I made, which can repair your 171-8132b. The chip used is s29gl128n11tf101.

It's not a problem unlocking the eprom, most likely it's because your ROM board hasn't been completely fixed

There is an ACTEL FPGA above, but I was unable to convert it to other games. Do any experts know how to modify it?

I repaired a Naomi cartridge with an adapter board.

Moving bricks

I don't want to publish the PCB file for this conversion board, sorry. Because I need to subsidize my family, the salary in China is relatively low, and I can only earn $1000 a month.

I am only responsible for providing renovation services to the boss. I'm sorry that everyone bought something that didn't meet their expectations.

Thank you to the expert on the second floor.

If anyone doesn't understand anything, they can consult. You are also welcome to customize these cartridges directly from me.

Yes, this is the card I modified. It uses the s29gl128 chip adapter, which is very difficult to solder.

I know it's messy, and it always gets messy again very quickly after I tidy it up.

We're going to sell it for $125. Is that a fair price?

I read that ebay charges 30-40% for selling things. Is that true?

In fact, this board will not be used on the cassette, this is just my own to verify that the ic22 that the socket can actually address 64m address. In most cases, it is only used with the original 27c322.

I read that ebay charges 30-40% for selling things. Is that true?

As for IKARUGA, I didn't get the rom with the correct checksum text mode either, but it was fine and didn't interfere with the game experience. The problem of diode step-down is actually acceptable, after all, it is cheap and convenient. The games that 8132b can transform are: ikaruga Crazy...