[Simh] A lost 18b peripheral

[Timothe Litt]

On 25-May-20 09:29, Bob Supnik wrote:
> Looking through the XVM/MUMPS15 listing, I saw that the timesharing
> terminals were attached via a DC01 communications multiplexer. There's
> no reference to such a device anywhere in the 18b literature on
> Bitsavers.
>
> Because the PDP15 is a contemporary of the PDP8/I and the KI10, I
> thought it might be a variant of their multiplexers, but I can't find
> a match.
>
> Another mystery.
>
> /Bob
>
The DC01 was a CSS product.  Option/module reveals that it was adapted
for the 8, 9, 15 & 11.  You may find some hints in the other families,
though as you know, registers tend to have family ties...

  * DC01-AA 8 line scanner full duplex tty &/or EIA  \
  * DC01-AB 8 TTY scanner half duplex                        \  8 POS
  * DC01-AC 8 Asyn scan full duplex EIA 3 cycle         /
  * DC01-AL Full duplex line unit for DC01-AA
  * DC01-BB 8 TTY line scanner 1/2 duplex echo      PDP-9
  * DC01-EA 8 Line scanner full duplex (tty &/or
    EIA)                             \
  * DC01-EB 8 TTY line scanner half duplex echo +
    logic                           \ 15
  * DC01-EC 8 Line async scan full duplex EIA 3
    cycle                                /
  * DC01-ED 8 Line async scan, half duplex echo tty or EIA Sep. speeds /
  * DC01-FA 8 line scanner full duplex (TTY &/OR EIA)  \
  * DC01-FD Improved DC01-FA                                          \ 11
  * DC01-FJ 32 line scanner, full duplex, can use any DF11 interface

Responsible engineers: B. Vachon, Bill Weiske, D. Hopkins, J. Larkin,
Reg Wetherall, J. Stefanowicz, Russ Moore

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