On Oct 10, 2015 12:27 PM, "Eric Smith" wrote:
>
> > Anyone disagree, and if so why did DEC want their 11/05 S to use "D"
model
> > core (D=parity) and not C (C=no parity)? The PDP 11/40 I have uses C.
>
> The H217D is the no-parity plane, and the H217C has parity.
>
> For the parity to do anythin
> Anyone disagree, and if so why did DEC want their 11/05 S to use "D" model
> core (D=parity) and not C (C=no parity)? The PDP 11/40 I have uses C.
The H217D is the no-parity plane, and the H217C has parity.
For the parity to do anything useful, you have to also have an M7259
module, and IIRC t
(cross posted to MARCH list)
Question about UNIBUS RAM with Parity vs. None
I assembled a pdp 11/05 in a BK11-K box with a sticky 5 light - I can load
an address, but the 5 light will erroneously (often but not always) light
when I examine. Once 5 is turned on it stays on, even if the toggle
