Grinnell Systems

Lars Brinkhoff lars at
Thu Apr 23 10:28:37 CDT 2020

Emanuel Stiebler 
> GREAT FIND! I think it is the fridge I was talking/thinking about.

I think it's an early generation from Grinnell.  Note the year ~1977.
The MIT one was from 1976, but maybe the same model GMR-27(0?).
The DTIC document describes an interface based on DR-11, same as MIT.
And the commands seem to match.

I have made emulators for more obscure hardware than this.

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