[TUHS] Will pdp 11/04 run unix?

[Heinz Lycklama]

As the author of both LSX and Mini-UNIX, I would suggest that the
LSX source code is a better starting point for the 11/04, especially
if single-user is the target. Mini-UNIX was written to support a
small number of users on the PDP 11/10 without an MMU.
However, I'm not current on what sources are still available.

Heinz

On 7/30/2020 9:13 AM, Warner Losh wrote:
> On Thu, Jul 30, 2020 at 7:49 AM Noel Chiappa <jnc at mercury.lcs.mit.edu 
> <mailto:jnc at mercury.lcs.mit.edu>> wrote:
>
>     - If you get the V1 that ran on an -11/20 (which is mostly
>     compatible with
>     the /04 and /05), it should run on an /04. (Not sure what you'd
>     use for mass
>     storage, on a physical /04, though.) I'm not sure when they
>     dropped the /20 -
>     I think V4 n(at the latest)? But V2 and V3 are lost.
>
>
> Yes, the reconstructed 1st edition may run (though from dates and 
> such, it's somewhere between 1st and 2nd edition), though I've no 
> direct experience with 11/04 hardware, nor ideas on how to bootstrap 
> it onto appropriate physical media...
>
> I have it in my head that the 4th edition was rewritten for the 11/45 
> and removed support for 11/20. I thought I knew why, but could only 
> find part of the story in the manuals...
>
> There's a strong note in the 4th edition preface that it applies only 
> to the 'c' version of Unix and the 3rd edition preface has a 
> note saying the manual doesn't apply to the 11/20 version and to look 
> in the 2nd or even 1st edition manuals for that.
>
> As others have mentioned, Mini-unix and/or LSX might have a shot, but 
> it might be best characterized as a long shot.
>
> Warner

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