10 Jul
2009
10 Jul
'09
3:02 p.m.
Ethan Dicks wrote:
On 7/10/09, Rick Bensene <rickb at bensene.com> wrote:
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.
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.