From: DrDiettrich1@aol.com   
      
   Louis Krupp wrote:   
      
   > I do know that the earlier machines in this series (Burroughs B6700)   
   > kept the top two words of the stack (and their double precision   
   > extensions) in registers and the rest of the stack in memory.  Later   
   > machines cached the top n words of the stack, which made stack access   
   > faster.   
      
   AFAIR a 16 bit TI microprocessor also used the top 16 entries on the   
   stack as registers. Perhaps this architecture reflected the Burroughs   
   machine?   
      
   DoDi   
   [That seems to be pretty typical.  The HP3000 kept the top several elements   
   of the stack in registers as well. -John]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)