intel 487sx

1 definition found

intel 487sx - Free On-line Dictionary of Computing (26 May 2007) :

  Intel 487SX
  i487
  
     <processor> A version of the Intel 486DX microprocessor
     with an extra pin, for use in the coprocessor socket of an
     Intel 486SX system.  The 487SX provides the FPU which is
     missing in the 486SX.
  
     Although the 486SX is completely disabled when you install a
     487SX, the 487SX design requires that you leave the 486SX in
     your PC [why?], rather than use it elsewhere.  Intel admits
     that in some systems you can unplug the 486SX and fit a 487SX
     in its place but they don't guarantee that it will always
     work.
  
     See Intel 486.
  
     (1995-05-10)