> I lucked out. One of the dead ones had a broken trace on the bottom, and > cracked corner of the socket for one of the big square chips.
So does that one work now? > The second one started working after I simply re-seated the two square > chips around their sockets. Yeah, that happens a lot. I got an 11/23 from him, it didn't work at first, I re-seated the CPU and MM chips, and now it seems to be fine. Excellent news, though! > Well, now both my 11/23 and 11/73 CPUs work with the MSV11-DB cards. Right, those are Q18. > a Clearpoint(?) Q22 memory card Camminton makes 2MB dual cards (CMV-504, although you can upgrade partially populated ones, which have a different number - 254, 500, 250); alas, the last one on eBay just sold, although there may be some out there from dealers like Continental). National Semi makes 1MB dual cards (NS23C - well, the manual says they are only 256KB, but they can be upgraded to 1MB with 256Kx1 chips, and a couple of simple etch cuts). Noel