Since I'm learning, I then burned 201-m1.m1 to an OTP 27C010 and dropped it in, also no change. I was able to dump S1 (TC531000CP) with my TL866 - it's basically a 27C010 with a couple of pins swapped:įrom looking at the spec sheets, the M1 (TC531001CP) is basically pin-compatible with the 27C010.
Where do you source one, and if from another game, what's the cheapest suitable board with one?
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In any case, any suggestions for how to debug this further? I don't mind that it would be a hack fix/not original - I'm really just interested in learning (and maybe playing Metal Slug!). Is there any way of confirming each of these chips somehow? I have a TL866A programmer - I wasn't sure if there was a way to dump the C ROMs with this device even with a 42 DIP adapter? I wanted to verify them against good dumps. Is there any way to tell which one of these is at fault, or test them? So it's obviously something with the CHA256 board.
I was able to test the PRG portions of the cart successfully, and that seems to be okay: Lo and behold, the previously corrupt text showed up as readable. The corruption showed up even in the UniBIOS (program ROM) CRC cart check.Īs a test, I used the CHAFIO (second) board from my KOF99 board and put that in place of the CHA256 that comes with Metal Slug. I purchased an untested Metal Slug, and it has severe graphics corruption while playing.
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