DEC H207 Core Memory Boards
hilpert at cs.ubc.ca
Fri Jul 10 17:02:53 CDT 2009
Ethan Dicks wrote:
> On 7/10/09, Rick Bensene <rickb at bensene.com> wrote:
> > Give the 16-bit array size, I assume that it may have been used in a
> > PDP-11, but I suppose (with four wasted bits) it could have been used in
> > some form of PDP-8 system.
> Probably not. There are 4Kx12 planes for the PDP-8 (I don't know the
> number off the top of my head) and it's not the same as what was used
> in the PDP-11. Cores cost too much to "waste" 25% of them.
While the use of the H207 has apparently been determined, out of curiousity was
there ever any ECC core memory for the PDP-8?, it might have have had a width
of 16 or 17 bits.
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