[TUHS] FP11-C user or programming manual

Noel Chiappa via TUHS tuhs at tuhs.org
Sat Jun 27 03:01:13 AEST 2026


    > From: Folkert van Heusden

    > I'm looking for an FP11-C user- and/or programming manual. My googling
    > did not show up anything.

Well, I looked at:

  https://gunkies.org/wiki/FP11-C_Floating-Point_Processor

and it lists a user's manual (EK-FP11C-OP-001), but doesn't link to it.

(In general, the CHWiki contains pretty good coverage on PDP-11's - hardware,
I never had much use for DEC software; it should be the first stop for
anyone with PDP-11 hardware questions.)

Searching for that turns up an old email message from me:

  https://www.classiccmp.org/pipermail/cctech/2015-September/010265.html

which says that I have a copy, and was planning to scan it. I got sick, and
never got to doing so, alas. And now my scanning machibe has a dead hard
drive.

    > Can I safely assume that the FP11-B works the sam?

The FP11-C was program compatible with the FP11-B Floating-Point Processor,
but there isn't a separate FP11-B user's manual; just use the -11/45 or
-11/70 processor manual.

	Noel


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