HP-75 RAM expansion?

[Paul Berger (Canada)]

(10-13-2016 03:57 PM)J-F Garnier Wrote:  I remember an article on this subject in the Journal of the French PPC-Toulouse Club, and it was not too difficult to recover it...
Attached are the diagrams, note that it uses a single 8K chip. You may find some information useful.

I once considered to build it, but later I found a cheap 8k RAM module so I didn't do it.

J-F

That looks like what I was thinking of doing to repair a broken 8K module, but then I found a source for 2K chips in SOIC package so I just replaced the defective chips instead.