The CPS-2 ! It's alive !

[weirdguy]

6 months... It's been dead for 6 months, maybe more.

My Super Gem Fighter Mini mix (gota love the name) battery was dead. I also learned today it leaked a long tme ago...

So last week I finally contacted the gran master of CPS-2, Razoola (yeah, the Universe Bios guy). For 30 euros, he could do it (with return shipping included).

A friend of mine have an EPROM burner, so for 25 euros, I was able to get the code to burn.

I got back my CPS-2 board tonight and it works great ! NO more battery to change in this one.

To make a long story short: If you have a dead CPS-2 board, Razoola is your man !

[DogP]

He charged you 25 euros to send you the file? Or your friend charged you 25 to reburn it? I thought you could just take the XOR file and XOR it with the file from the MAME ROM and get the decrypted file. I mean... not that he doesn't deserve money for all the work he's done, but he says that he charges a small fee for his time to reburn plus shipping, not selling the ROM files.

DogP

[Hammy]

if you notice the XOR's are about the size of the program roms ...

[DogP]

if you notice the XOR's are about the size of the program roms ...

Well, they should be the exact same size, and be XOR'd bit by bit. IIRC a lot of the original ROM is decrypted, and only a portion of the XOR file is anything but 0's (since anything XOR 0 is unchanged).

DogP

[Hammy]

exactly, the XORs are basically a rewrite of the decryption datalike you say.

[Berty]

if you notice the XOR's are about the size of the program roms ...

Well, they should be the exact same size, and be XOR'd bit by bit. IIRC a lot of the original ROM is decrypted, and only a portion of the XOR file is anything but 0's (since anything XOR 0 is unchanged).

DogP

I already tired that and it doesnt work. You also need to change some write address, but i didnt make it past the decryption.

[icbrkr]

This reminds me I need to hook up my CPS2 board so the battery doesn't go dead :P