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Midwest DEC DL11 M7800 unibus serial interface

Covers: North Dakota, South Dakota, Nebraska, Kansas, Minesota, Iowa, Missouri, Wisconsin, Illinois, Michigan, Indiana and Ohio
dalmill

dalmill

Member
Joined
Apr 1, 2023
Messages
32
Location
Milwaukee area
Delivery Options
In Country Shipping or Local Pickup
For local pickup or continental US shipping.

(1) DEC M7800 DL11 unibus serial interface.

Has an 844.8 khz crystal.

Appears to have been modified to allow toggling of bus address A9 via switch on board.

The switch and wires were loose, so added doll-ups of hot glue were used to anchor them.

I think this was used as part of a field test kit of sorts.

Board is untested as I have no way to do so.

Asking $50.

Dale

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Just to be clear, don't let the added switch and wires scare you.

They are easily removed to revert the module back to factory.

Dale
 
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