Re: [RFT] Port 0x80 I/O speed

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On 12-12-07 01:14, Maxim Levitsky wrote:

CPU frequency locked to 2128.000 Mhz:
maxim@MAIN:~/tmp$ sudo ./port800
cycles: out 1650, in 1065

CPU frequency locked to: 1596.000 Mhz
maxim@MAIN:~/tmp$ sudo ./port800
cycles: out 1730, in 1138

A bit strange, isn't it?

Well, yes. Don't know what that effect is. A bus-clock divided from the CPU clock comes to mind, but I believe that shouldn't happen to LPC.

Anyways, we're looking for an upper bound and that's still nicely below 2 us on everything upto now, so I guess it doesn't matter all that much. Thanks!

Rene.
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