--- arcarlini at 
iee.org wrote:
 Amstrad produced a 386 PC with a built-in Megadriv e. So that's
 three. Four if you count the keyboard :-)
 Antonio
  
 They did?!  I don't suppose you know of any
 pics online somewhere? 
BTW: I wasn't serious about it counting as a 3 processor machine!
I've never seen one in the flesh, although I do remember
thinking I'd like to have one when I first heard of it.
Antonio