On Thu, Mar 17, 2016 at 1:18 PM, dwight <dkel...@hotmail.com> wrote: > The 4289 can be used for RAM with the 4040, using the WPM and RPM. It can be > used > on the 4004 but it is limited to WPM only.
I know about that; what I was asking about was whether the 4289 (or 4008/4009) could replace "normal' 4002 RAM. I think the answer is negative. > In any case, please don't erase the EPROMs, thinking they are blank. > I offer my services to read them. Also, there may be someone closer > to you that can extract the data. I can read them. Or rather, I could if I had them. The sockets are empty.