On 5/3/24 12:59, Maciej Kawalkowski, Liberty Electronics Design and Service LLC wrote:
HP-9000 DIO RAM
Your post helped a lot . I think I found the cloned memory info by Dr. Scott M. Baker :
<>
That's not the project I worked on; the one I was involved in is just pure RAM, 7.5MB to fill the address space. No ROM. There was no discrete logic; everything was implemented in a GAL, and it was all surface-mount.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Dave McGuire