How to determine stepping on P3???

HansHurt

Platinum Member
Apr 5, 2001
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well, one way is to go to new CPU database here at AT , in the My.Anandtech section....add or search for a CPU...put in your week# w/ s-pec...it will show the stepping when you have finished.
 

PentiumIV

Member
Feb 19, 2001
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If someone can code in assembler, the following information might be useful.

There is a special instruction to get CPU identification : CPUID instruction.

Call CPUID (opcode 0F A2, no MOD/RM), EAX=1.
The bits 3:0 of the EAX register are the stepping ID,
bits 7:4- model id, bits 11:8- family ID.

The following is valid for Intel CPUs, beginning with the late 486s/Pentiums.

Hope it helps.

Greg Pribush, iMPG.
Not speaking for Intel:)