Wow — wonderful Dan, thanks for this!
And prospective thanks to anyone else for their thoughts…
Warm (in machine room) regards,
On Dec 20, 2019, at 12:49 AM, Dan Cross
On Wed, Dec 18, 2019 at 1:52 PM Paul McJones
Computer History Museum curator Dag Spicer passed along a question from former CHM curator
Alex Bochannek that I thought someone on this list might be able to answer. The paper
"The M4 Macro Processor” by Kernighan and Ritchie says:
The M4 macro processor is an extension of a macro
processor called M3 which was written by D. M. Ritchie for the AP-3 minicomputer; M3 was
in turn based on a macro processor implemented for [B. W. Kernighan and P. J. Plauger,
Software Tools, Addison-Wesley, Inc., 1976].
Alex and Dag would like to learn more about this AP-3 minicomputer — can anyone help?
[I recommend that follow-ups go to coff, which is Cc'ed here]
I took a short stab at this, but can find little beyond references in the aforementioned
I did, however, run across this:
This appears to be a declassified letter written to the US Air Force at Bowling Green Air
Force Base in regards to spare parts fo the AP-3 computer; dated October 19, 1966. The
list of parts seem reasonable for a minicomputer, and it further seems reasonable to
believe that this may be related to the same type of computer referenced in the M4 paper.
However, details of the sending party have been redacted, and there is nothing pointing to
the identity of the manufacturer.
Sadly, that's all that seems available. I wonder if, perhaps, Doug McIlroy
(Cc'ed directly to float this to the top of his stack) can shed more light on the
- Dan C.