value of RK05

From: johnb <dylanb_at_sympatico.ca>
Date: Tue May 9 18:35:23 2000

<snip>

> > Gordon Bell had 300 "PDP-11" minicomputers made that were *slightly*
> > different from the PDP-11/20. Most 11/20 boards are rev "A". I will list
soo
> > the differences - most had to do with the UNIBUS.. but there was some
> > changes to the datapaths as well.
>
> Ah, so they're not really production machines...

They *really* weren't sold as prototype machines. One could say the PDP-1,
PDP-4 , PDP-6 and PDP-7 were "prototypes" as well then. This was Gordon's
first 16 bit release, he just redesigned some of it and re-numbered the
computer as a new PDP-11 line was starting in 1971.

I *did* have one of the original PDP-11 prototypes and it was quite a mess.
It did boot RT11 v4 though :-)

john
Received on Tue May 09 2000 - 18:35:23 BST