[Simh] PDP-11 DZ11 ports route to physical RS232s ?

[Christian Brunschen]

In the current github sources, the DZ implementation
<https://github.com/simh/simh/blob/5531ccb1759aa0b67f079ead7e51a0bbc835d262/PDP11/pdp11_dz.c>
seems
to be using the general Terminal Multiplexer Library
<https://github.com/simh/simh/blob/f2656acb380b9174f29fc042bc48913e51ca6a07/sim_tmxr.c>,
which supports hardware serial ports, as documented for example here
<https://github.com/simh/simh/blob/f2656acb380b9174f29fc042bc48913e51ca6a07/sim_tmxr.c#L3940>
.

Without testing anything (I have nothing to test with), perhaps commands
like

  sim>attach dz Line=1,Connect=/dev/ttyS1
  sim>attach dz Line=2,Connect=/dev/ttyS4
...

would work?

// Christian


On 9 July 2016 at 07:46, Jörg Hoppe <j_hoppe at t-online.de> wrote:

> Hi,
>
> Here's a BeagleBone micro Linux system with 4 physical RS232s ports made
> available (BlinkenCape).
>
> Is it possible to connect individual PDP-11 DZ11 ports to those RS232
> ports "/dev/ttyS[1-4]" instead of telnet ports?
>
> I heard rumors about it, but documentation doesn't indicate.
> And the syntax of
> sim>set dz lines=n
> sim>attach dz <port>
> allows only a whole block of DZ11 ports to connect to a consecutive range
> of telnet ports, not individual assignment. Or did I miss something?
>
> Background: on VCF Mid West we want to show a multi-user RSX11
> installation with Blinkenlight panel (BlinkenBone) and several terminals
> attached.
>
> thanks,
>
> Joerg
>
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