3) It
has some pretty easy to use busses defined for it (Q-Bus, Unibus) 
 Does anyone know what DEC's restrictions are on these buses now? At one
 time they were patented by DEC, and you could only (legally) homebrew a
 certain number of cards per machine.
 Alternatively one could go with something like SPARC (which Sun alleges is
 open but I have my doubts) 
 I don't think the processor is the problem, is it? You can get a pentium
 data sheet with enough info to write low-level software for the machine.
 -tony
  
 
As far as I know DEC never enforced any patent restrictions on building
Unibus or Q-Bus cards.  They did kill anyone who tried to do Massbus
or Cache-Bus interfaces on the 11's.
Bill
---
  bpechter@shell.monmouth.com|pechter@pechter.dyndns.org
      Three things never anger: First, the one who runs your DEC,
      The one who does Field Service and the one who signs your check.