Help with Summagraphics BitPad2

[mis at WHITE.STANFORD.EDU]

I am trying to interface a device that looks like a
Summagraphics Bitpad 1 and 2  to SGI 2400 and can't get much help
from the hot line.  Does anyone have  a daemon to  run this type
of device rather than the Hitachi bitpad?

Thanks in advance,
-Misha Pavel
<mis at psych.Stanford.edu>