Core memory emulator using non volatile ram. - test-drb@ccmp.vtda.org

15 Dec 2018

On 12/15/2018 03:22 AM, Rod G8DGR via cctalk wrote:
...
  I have an idea to produce an MM-8  clone using RAM
that acts like core when turned off.
 Can anybody suggest a chip that will do this?

 Any CMOS SRAM chips can do this, with a backup battery.  I 
used a IS62WV6416DBLL in a project a while ago.  I did not 
use in in battery-backed mode, but it could do that.  You do 
have to make sure that any outputs from the memory are 
driven to the high-impedance state during power-off to 
prevent draining the battery.

Jon