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Now if you ask about how to test the ROMs in real time without extracting from the board now it's a trip, because every game has a different setup in a different board release. Regarding the Program Board, you could use UNIBIOS from Razoola (http://unibios.free.fr/whatisit.html), to verify ROM...

Hello again, Well, if you extract the C/V Roms from the board for reading, they are MASK ROMs of 64Mbit (8M x 8 / 4M x 16) compatible MX23C64010 64Mbit (4M x16) from Macronix MASK ROM. The others you can follow this : Original reference: https://servimg.com/view/15705655/320 Regarding the...

Hi, The CMC42 and CMC50 are compatible with each other (they have the same pinout). The problem itself is that the M1 from an encrypted game (CMC50 board) cannot be decrypted by a CMC42 and an unencrypted M1 (CMC42 board) cannot decrypt a Game that is not prepared for it. because every latest...

Hi... That resistor you see of 161OHMs is OK also all other 561OHMs if they still measure that value. If you can check any partial image on the screen your CMC50 is probably OK, and probably is just some lines between C ROM and CMC50 has a faulty connection. But in case everything is a mess on...