Al Hartman wrote:
  Harris Semiconductor made licensed 80286
CPU's.
 They made them in 16 and 20mhz versions.
 I used to sell systems made with them, and at the time the 386sx came
 out, a 286-20 was MUCH faster than a 386 20mhz... 
 How is that possible?  The 386 improved many instructions to run in
 fewer clocks...
 Besides, I'd always take a 386-16 over a 286-20, because the 286-20 runs
 protected mode applications at 0MHz ;-) 
I don't know, but I remember comparing two side-by-side and the 286
absolutely horsed the 386sx.  IIRC it was about 15% faster - *really*
noticable difference.
Gordon.