I'm trying to get my PDP-8/e running a "real" OS (as opposed to loading programs one at a time from papertape). I've had an RX02 drive (supposedly working) in my possession for some time, and I just need to find a working M8357 to seal the deal. I currently have a non-functional M8357 -- I get an error code from the dirxac diagnostic that translates to "Unexpected Transfer Request Flag." I'm not much of a hardware hacker, unfortunately, so I'm in no position to debug/repair the board. If anyone out there has an M8357 they're willing to part with, or has the ability to repair these things, please let me know. Thanks!