Udelay and new CPUs

[Jeremy Fitzhardinge]

On 21-Jan-00 H. Peter Anvin wrote: 
> There are no "x86 cycles" on Crusoe, so it counts VLIW cycles.  In
> fact, on TM5400 it counts *nominal* cycles, since the actual cycle
> length is variable (due to LongRun).

So RDTSC is useless for getting consistent udelay delays.

        J

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