I've heard little discussion (since I joined
earlier this year)
 about the National Semiconductor 32000 processor line. IIRC,
 some (but not all) of the chips in this family were true
 3-address machines.
 Anyone familiar with them? Do any significant assembly
 language programming on one?
  
I seem to recall a series of articles in Micro Cornacopia magazine years
ago.  Is the line still produced?
g.