I got quite a few interesting 1970's area chips in a recent component haul in Palo Alto, CA (which had originally been advertised here). A whole TTL series complement of course, but some old DTL stuff too and some early Intel bipolar memories and Intel 8080 support chips. However there is a chip that I can't identify. It was next to other drawers of memory chips and 8080 support chips, so perhaps it is some sort of memory or helper chip? Maybe a military spec version of a better known chip (there were quite a few mil rated parts in there)? Some were in plastic packages marked "CM 5120", some were in gold ceramic packages with just "5120". Date codes from 1971 and 72, way too early to be associated with the IBM 5120. I can't make anything of the logo either (looked like CMI, but that doesn't show up on Google). Picture here:
https://goo.gl/photos/fknLYNNey3rymcTf6 Can anyone identify it? Marc
