What is a BC01-R

Noel Chiappa jnc at mercury.lcs.mit.edu
Sun Jan 2 18:28:11 CST 2022

    > From: Chris Zach

    >> Anyone know what an M857 is? I guess it might be a DF11 async answer
    >> mode? 

    > No, it's a single width full height M series board from the early
    > 1970's.

Argh, digit swappping on my part.

The _M587_ is in the DN87 FMPS:


(pg. 98); it's a dual-width card, an "Async answer modem" (the DF11-BB).

The BC01-R cable is in there (pg. 89), but I don't see the M857. (Web
searches don't turn it up either.)


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