2 Jan
2022
2 Jan
'22
4:28 p.m.
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