DEC "Junk" rescued

[Tony Duell]

> 
> >
> >Subject: Re: DEC "Junk" rescued
> >   From: ard at p850ug1.demon.co.uk (Tony Duell)
> >   Date: Thu, 17 Nov 2005 00:29:03 +0000 (GMT)
> >     To: cctalk at classiccmp.org
> >
> >> Funny thing about PDP-11 system models.  Even number for the most part 
> >> are unibus like 11/34 or 11/44 (11/05, 11/35 exception) and odd number
> >> like 11/03, 11/23 are qbus.  
> >
> >I thought all machines ending in 5 (05, 35, 45, 55) were Unibus.
> 
> What about the 11/34m 11/44, 11/60!

A statement does not imply its converse!

All machines ending in 5 are Unibus. Not all Unibus machines end in 5. 
There are, of course, those ending in 0 (11/10, 11/20, 11/40, 11/50. 
11/60. 11/70), those ending in 4 (11/04, 11/24, 11/44, 11/84, 11/94), etc.



> 
> >>From what I've read (and I've seen a manual with a sketch of one), there 
> >were going to be 11/09 and 11/39 machines. These would have been 
> >'packaged' versions of the 11/04 and 11/34 (much as the 11/10 is a 
> >packaged version of the 11/05). In the end, I don't think DEC ever 
> >shipped a machien with that nameplate, they were all marked 11/04 or 
> >11/34 as appropriate.
> >
> >-tony
> 
> The package machines were the PDT11 series (models 110, 130 and 150
> were all cousinns of the 11/03) and the Pro350(f11 cpu) and PRO380(J11 cpu).

No, you misunderstood me. From what I rmemeber, the only difference 
between an 11/05 and an 11/10 was what came with it. The 11/05 was a bare 
CPU. The 11/10 came with things like the paper tape software kits, etc.

The latter is what I refered to as a 'packaged system'. Probably not the 
right terminiology.

Anyway, I have seen sort-of references to the 11/09 and 11/39, which 
would have been the same CPU as the 11/04 and the 11/34, but configured 
for the end user. No electrical or mechnaical differences. AFAIK, though, 
DEC never actually sold a machine with an 11/09 or 11/39 anmeplate.

-tony