30 Apr
2009
30 Apr
'09
9:43 p.m.
--- On Thu, 4/30/09, Rick Bensene <rickb at bensene.com> wrote:
>
http://sturgeon.css.psu.edu/~mloewen/DSC01381.JPG
> http://sturgeon.css.psu.edu/~mloewen/DSC01382.JPG
> http://sturgeon.css.psu.edu/~mloewen/DSC01463.JPG
Based on the way they are wired, they look more like
ROS
(Read Only
Storage, IBM's TLA for ROM).
Each board looks to be a 10 word by 10-bit ROM.
My guess is that this is either a switch core matrix
(a magnetic decoder used to drive the X-Y select lines
of a core memory) or some other magnetic-logic device
such as decoder or shift register.
--Bill