Summagraphics Bit Pad One GPIB protocol documentation?

[Tony Duell]

> Thanks -- looks like Al already has it scanned, so there's no need to go 

Yes, thanks to Al for that. It's saved me a bit of typing...

> through the trouble of transcribing it for me.  Thanks for the offer, 
> though.
> 
> Looks like a pretty simple protocol, should be easy to get going, at 
> least once I work out the subtleties of GPIB...

IIRC you don't need to bother too much about GPIB. On the PERQ side that 
was handled by the Z80 and a 9914 chip. And I don;t think the BP1 uses 
many of the GPIB features, thankfully.

-tony