[COFF] [TUHS] Will pdp 11/04 run unix?

[Lars Brinkhoff]

Noel Chiappa wrote:
> Hmmm. My memory was that it was an -11/05-10 (they are identical,
> except for the paint on the front panel; and I don't recall it in
> enough detail to say), but perhaps I'm wrong?

I couldn't say for sure.  I have seen conflicting information in sources
dating from the 70s when the TV-11 and XGP-11 were very much in use.

For several reasons, I believe the TV-11 was the first machine attached
to the 10-11 interface, and the XGP-11 came second.  This would lend
some weak support for the theory that the first would be a 11/20 and the
second a 11/10.

> Or maybe it was an -11/20 early, and then it got replaced with an
> -11/10? (I have a _very_ vague memory that the XGP's -11 was a /20,
> bur I wouldn't put much weight on that.)

Replacing or changing machines around would explain the confusion, but I
haven't seen anyone remembering such events, or any written record to
support that.

> Moon or TK or someone might remember better.

I did bring it up with TK at some point.  He said the TV-11 must have
been a 11/20, because at the time there was no other PDP-11 model
available.  But as far as I can see from file timestamps, the AI lab TV
project was started in 1973 or so when the 11/10 would have been
shipped.