troff previewer on a 386i?

[Dr. S.I.Hariharan]

This question may have been already asked. If so my apologies. Is there
any one out there succeded to obtain a working version of a troff
previewer for the Sun386i? I shall be grateful if you have one and let me
know where to start. 

Thank you.

S. I. Hariharan(Hari)
Email: R1HARI at AKRONVM.EDU
or
hari at zippysun.math.uakron.edu   ---- This works only for a few.