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Question of the Day! by kickstart2007-03-05 00:00:04
  we used to have turbo switches on computers by buzzin2007-03-05 00:59:25
    Assuming you meant 486 SX/DX: by bwkaz 2007-03-05 04:08:04
The DX add-on wasn't really a separate coprocessor. It was a full DX chip (the kind you could have put into your main CPU socket if it had been packaged for that socket); it disabled your main SX chip completely.

Thank you Intel...

(Now, I remember the 386DXes, which did use a separate math coprocessor. Because no version of the 386 came with an embedded coprocessor, so they all had to use a separate add-on chip to do the math. IIRC the difference between the 386SX and DX was the number of physical address lines (24 vs. 32), but that may not be correct.)
[ Reply ]
      no...386 :) by buzzin2007-03-05 06:47:01
        There was no "DX coprocessor" for the 386. by bwkaz2007-03-05 19:16:16

 

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