I received a box a while back containing an INFOREX Core Memory Controller
from late 1970 / early 1971 and a DATARAM core memory
cartridge / daughter
card. The DATARAM core is 4K I believe, but I did not open it
to check.
The box also contained a document (not the product docs) ranging from
1971-1978 about this type of 4K and 8K core memory, and some interesting
pages about installing and using core memory with an S-100 data bus. It
looks like the original owner was trying to figure out how to use this card.
I assume that this particular DATARAM core memory could be used in both the
pictured below DEC-like controller and a homebrew S-100 controller, but it
was originally built for systems in the late 60's early 70's before the
S-100 bus, etc... Given the condition of the card and memory, it's very
possible that these components work. Now I just need a computer to put them
in...hmmm.
I have a basic idea of what the A, B and C card connectors do from some
notes included with the board on a scrap of paper (assuming they're
correct). For example pin 22 of connector A is a master reset, 25 is read
enable, 26 is write enable. B 9 is a strobe and 13-19 are data in,
etc. Let me know what info I can provide. I am not an engineer however.
Pictures:
http://www.vintagecomputer.net/inforex/
Can anyone shed light on the history/use of this?
Thanks.
Bill