unix precursors

[Paul West]

Eric Fischer wrote:
> 
> I've read somewhere that
> the system is supposed to be similar to the PDP-1 time sharing
> system developed at MIT, but the only documentation I've located
> on that is Mario Bonghi's master's thesis, which seems to have been
> written before the hardware was even upgraded to be able to run
> the software it describes.

The book "Computer Engineering" by Bell, Mudge and McNamara gives
another reference for the MIT PDP-1 timesharing system:

J.B. Dennis,
"A Multiuser Computation Facility for Education and Research"
Comm. ACM, vol. 7 no. 9 (Sept. 1964), pp 521-529.

BTW, there apparently were two different timesharing systems developed
for the PDP-1, the second one coming from Bolt, Beranek, and Newman
(BBN). "Computer Engineering" gives this reference for the BBN system:

J. McCarthy, S. Boilen, E. Fredkin, and J.C.R. Lieklider
"A Timesharing Debugging System for a Small Computer"
AFIPS Conference Proceedings, SJCC 1963, vol 23, pp 51-57.

Yes, that is John McCarthy of LISP fame.

Paul

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