[HECnet] DMC11 in next simh version... looks nice, and question about TOPS-10

Dave McGuire mcguire at neurotica.com
Wed Jan 2 14:49:39 PST 2013


On 01/02/2013 05:32 PM, Paul_Koning at Dell.com wrote:
The upcoming SIMH version (4.0) comes with a virtual DMC11. It has
been merged to the head branch in the git repository, so I have
been playing with it a little bit. The simh team has done an
aswesome work again, so kudos for Bob, Mark and all the others...
It seems the DMCx are supported in pdp10, pdp11 and the VAXen. The
basic instructions to make it work are in the DOC files. Just to
make the story short:

- DMC11s work in pairs, just like the real devices. - One of the
DMCs has to be put in PRIMARY mode, the other one in SECONDARY. The
default is SECONDARY.

Why those two modes?   Real DMCs are symmetrical, I would have
expected a simulation to do that too.

  I haven't seen the code, but I would guess that it's a matter of
non-DMC-related administrivia, like which end initiates the TCP connection.

                            -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA



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