I've just finished building and checking out a minimal Intel MCS-85 SDK. Was fun to build and runs like a champ. Not bad for sitting in storage since 1979. The only annoyance was that the black anti-static foam had turned to crud and tarnished all of the IC pins. Anyway, now I would like to expand it a bit. The board and schematics call for 2 8212 address drivers (24 pin dip) and 5 8216 buss buffers (16 pin dip) to drive the interface to the breadboarding area. All of the other chips on the board have 1977 or 1978 date codes so, if possible, it would be fun to get matching chips. If these things are "hen's teeth", then I'll take whatever I can get. Thanks, Bill