As of this afternoon, the standard Xsun server works (albeit with
no colormap support) on the Tadpole 3GX.  So you have run with the
defaults colormap the prom set up.  But it's enough to have twm
and xterms running (although with just blue & white).
-- 
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt/
Cupertino, CA             Disclaimer: I avow all knowledge of this message