One last thing, is the 16c84 the appropriate chip for this?  I realize the
EEPROM is nice, but it does add significantly to the cost of what should end
up being a one shot deal.  Of course, I guess if you socket the 16c84 then
you can burn an OTP and yank out the 84 if you feel it necessary.

Roger (Looking forward to trying this on my Sparc I, even though I do have a PC)