What is a BC01-R - test-drb@ccmp.vtda.org

2 Jan 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:

http://www.bitsavers.org/pdf/dec/pdp10/periph/MP00068_DN87_Universal_Comm_S…

(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.)

	Noel