[comp.sys.ti] TI PRO Expansion Box

Frank_E_Emery@cup.portal.com (10/11/90)

I am looking for an expansion box for a TI-PRO that I have loaded and
need to address more boards.  Such a box was sold in the mid 80's by ARK
Technology of Cleveland, OH.  They went out of business in 1986.  

Does anyone know how to get in touch with the Principals?  Perhaps they have
some inventory, and I could buy one.

They had a representative in Mountain View, CA called Master Reps.  They too
don't exist.  Anyone know how I could track someone down from Master Reps.

Alternatively, does anyone have such an expansion box they might want to sell?

Or another alternative, what action might be needed to make an XT expansion 
box work?

I have such a box.  If the transimitter board is put in the PRO, the machine
will not boot.  If the receiver board is put in the PRO, the machine will boot
but will not recognize boards in the other box.  There is a -5V pin on the 
receiver board that is dead in the PRO.  I guess no -5V distribution.  Could I
safely use a voltage divider from the -12V bus?

EMAIL to Frank_E_Emery@cup.portal.com

Thanks in advance.