I always thought there was one and only one PDP-6 at MIT. The one
running ITS at the AI Lab. But then I found a post to alt.sys.pdp10 by
Marc Crispin:
I did meet the MIT AI and DM PDP-6s
Digging further, I found Project MAC progress reports mentioning this
Dynamic Modeling PDP-6.
Page 59 in
http://www.dtic.mil/dtic/tr/fulltext/u2/732767.pdf
at Project MAC, both the Multics GE 645 system and the
Dynamic
Modeling and Computer Graphics Groups' PDP-6/10 system are network
hosts.
Page 60 in
http://www.dtic.mil/dtic/tr/fulltext/u2/756689.pdf
Work on the Dynamic Modeling System began,
effectively, in October,
1969, when a used PDP-6 computer with 32K words of memory was
delivered to Project MAC.
Does anyone know more about this PDP-6? Did it ever run ITS, like its
PDP-10 successor?