Messages in this thread | | | Date | Thu, 19 Dec 2002 14:17:11 -0800 | From | "H. Peter Anvin" <> | Subject | Re: Intel P6 vs P7 system call performance |
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Pavel Machek wrote: >> >>Different thing - int 0x80 syscall not i/o port 80. I've done I/O port >>80 (its very easy), but requires we set up some udelay constants with an >>initial safety value right at boot (which we should do - we udelay >>before it is initialised) > > Actually that would be nice -- I have leds on 0x80 too ;-). > Pavel
We have tried before, and failed. Phoenix uses something like 0xe2, but apparently some machines with non-Phoenix BIOSes actually use that port.
-hpa
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