From: joemonk64@gmail.com   
      
   > IBM programmers did that on the 360s and in the late 50's,    
   > the Electrodata Datatron systems recommended using unused operand    
   > fields in the instructions as temporary storage.   
      
   Yes, and it is a major irritation for Paul, which I think is funny as shit.   
      
   He can't create 32-bit programs on his PDOS/3X0 because we use the top bit   
   (bit 0 in a 32-bit address) as a flag to indicate the end of a parameter list,   
   a technique which is still in use today and was first started on the IBM 360   
   series. Noone in the    
   IBM world has a problem with 31-bit programs ...   
      
   Joe   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)