Roger Ivie [rivie at 
ridgenet.net] wrote:
  During development of VAXBI, we were told (by the
folks
 working on it) that it was A) not going to be VAX-specific
 (DEC was moving MIPSward at the time) and B) would be open.
 We were a bit startled when it was announced as "VAXBI". 
It was never open (in the way that UNIBUS was) but it wasn't VAX-only
as the DECsystem 5800 (iirc) used it too.
Antonio