[pups] bitsavers document

Milo Velimirovic milov at uwlax.edu
Thu Jun 15 23:35:36 AEST 2006

> Message: 1
> Date: Wed, 14 Jun 2006 16:24:29 -0700 (PDT)
> From: Martin Lovick <martin_lovick at yahoo.com>
> Subject: [pups] bitsavers document
> To: pups at minnie.tuhs.org
> Message-ID: <20060614232429.78414.qmail at web36905.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
> whilst looking around the bitsavers.org pdf archive, I
> found a document called
> PreliminaryUnixImplementationDocument_Jun72.pdf.
> Having had a quick scan through, it contains a source
> code listing and some commentary (lions i hear you
> say).

No, not Lions. The author is listed on the first page as one T. R.  

> The strange thing is that all of the source code
> appears to be in assembler...

yup. This would be an early pdp11 UNIX from the period before the  
rewrite in C.

> whats this about?

It appears to be a listing of an assembly language version of an  
early UNIX kernel for the pdp11 in the pages labelled E*-*; the pages  
F*-* are a commentary; G*-* is a glossary of terms used; H*-*  
contains a description of each function in the kernel with complete  
details of each function.

> is it a comentary of PDP-7 unix?
It's (Bell Labs flavor) pdp11 assembly language.
> regards
> Martin

Milo Velimirović                            <milov at uwlax.edu>
Unix Computer Network Administrator            608-785-6618 Office
ITS Network Services                        608-386-2817 Cell
University of Wisconsin - La Crosse
La Crosse, Wisconsin 54601 USA                43 48 48 N 91 13 53 W
Unix: Where /etc/init is job #1.

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