[TUHS] Bell-Era UNIX Audio/DSP Interfaces?

[G. Branden Robinson]

At 2025-01-07T09:42:14-0500, Douglas McIlroy wrote:
> The PDP-7 of Unix v0 was a hand-me-down from Pinson's time in V&A. And
> the PDP-11 of v1 was supported by a year-end fund surplus from there.

Hi Doug,

This seems to clarify something I'm a bit murky on in early Unix/nroff
history, because I have read (and repeated, in groff's roff(7), the
claim that revenue from internal AT&T deployments of nroff were a major
aid to getting the CSRC on its feet hardware-wise.  But that's in some
tension with the story of Ossanna being able to deliver to the patent
application typists a new line numbering feature in the (n)roff
formatter "by tomorrow" if it was only after nroff's success that these
revenues showed up.

I also seem to remember from the preface to the v3 or v4 manual that the
CSRC was trying to get itself and its Unix users everywhere away from
the PDP-11/20 as fast as possibly, because that model didn't have memory
protection.

I thus have these questions:

What model of PDP-11 was v1 Unix developed and run on at the CSRC?

What model did the CSRC acquire next?  Specifically, which one did
(n)roff make possible?

Regards,
Branden
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <http://www.tuhs.org/pipermail/tuhs/attachments/20250107/540914aa/attachment.sig>