> 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_System_Front_End_Jan76.pdf (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