On Thu, 2003-02-13 at 07:42, Ethan Dicks wrote:
> --- Andreas Freiherr <Andreas.Freiherr_at_Vishay.com> wrote:
> > BTW, somebody asked for pictures a while ago. Please visit
> > http://andreas.freiherr.bei.t-online.de/pdp-11/index.htm and have fun!
>
> A correction for your page (nice pic, BTW)... the 11/10 and 11/05 were
> the *second* PDP-11 CPU - the first was the 11/20 (and 11/15?).
I thought the 11/45 was the second PDP-11 (and the first microcoded
one). The 11/20 was the first and the *very* early ones just said
PDP-11. When the 11/45 was introduced, it was re-named the 11/20. The
11/15 is an OEM version of the 11/20. Just like the 11/05 is the OEM
version of the 11/10.
>
> I have both an 11/05 (working) and 11/20 (still in pieces). The 11/05 is
> much more compact and integrated compared to the 11/20 (which has several
> backplanes for the CPU and memory).
>
I'm note sure which CPU has more cards, the 11/20 or the 11/45. :-) The
11/20 has *alot* of flip chips. That's what you get when you just use
SSI TTL. The 11/45 atleast used MSI.
--
TTFN - Guy
Received on Sat Feb 15 2003 - 17:12:00 GMT