Summagraphics Bit Pad One GPIB protocol documentation?

Tony Duell ard at
Thu Nov 26 13:43:55 CST 2009

> I'm working on supporting GPIB tablet support for PERQemu (right now it 
> only supports the 3-button Kriz tablet).  Anyone have documentation for 
> the protocol used by the GPIB variant of the Summagraphics Bit Pad One?

Not suprisingly (as a PERQ-fanatic :-)) I have the excellent user manual 
for the Bit Pad 1, which contains full schematics and protocol 
information. From waht I remember, the BP1 came in RS232 and GPIB 
versions, and the data protocol was the same.

If you get no other replies I'll dig out the manual and type it up.


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