Hello Marcel!

 MV> I am trying to time a piece of assembly code; supposed the Intel
 MV> Pentium has a register which counts clock ticks. I figured this would
 MV> be the easiest accessable counter with a high enough resolution for my
 MV> purpose, but: I don't know how to access this register.

 MV> Does anybody know how to do this?

You can gain access to this and many other registers from ring 0 only. So
you have to write your own device driver which will gather information and
transfer it to your program via ioctl or by some other way (cannot imagine
something better than ioctl though).

 MV> And do any other CPUs (80486, PPRO, Cyrix, AMD, etc) have a register
 MV> like this?

PPRO has.

Bye!
Rinat Sadretdinow                                              [Team OS/2]

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