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To: chipguy who wrote (248638)3/11/2008 9:51:50 PM
From: Elmer PhudRespond to of 275872
 
The first 486SXs were 486DXs with the FPU disabled. This
was simply a time to market vs design resources issue. A
distinct smaller 486SX device with no FPU came later but
probably represents the vast majority of 486SX sales.

Very early on perhaps some were intentionally disabled until the NPUless design was qualed. But it was never part of the DX flow to save the NPU fallout for the SX product line. That was what the urban legend claimed.


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