LLXX, on Dec 23 2006, 12:28 PM, said:

That was a D0 before microcode was updated - this was confimed by replacing update.sys with older one which didn't have the microcode for my CPU.
Are you sure? I don't think that this could be possible.
"D1" just means stepping "D1" of Northwood P4 Processor, it is given by the 0F29 family/model/stepping.
For example:
(for CPUs in 478 and 775 pin packages)
0F24 = Northwood B0 stepping, latest microcode update 1E
0F25 = Northwood M0 stepping, latest microcode update 2B
0F27 = Northwood C1 stepping, latest microcode update 37
0F29 = Northwood D1 stepping, latest microcode update 2E
0F33 = Prescott C0 stepping, latest microcode update 0C
0F34 = Prescott D0 stepping, latest microcode update 17
0F41 = Prescott E0 stepping, latest microcode update 17
0F43 = Prescott-2M N0 stepping, latest microcode update 05
0F49 = Prescott G1 stepping, latest microcode update 03
0F4A = Prescott-2M R0 stepping, latest microcode update 04
etc.
The relation between steppings and CPUIDs can be found here: http://processorfinder.intel.com/List.aspx...c=&OrdCode=
It is possible to detect the microcode revision by CPU-Z but only indirectly and with older versions of CPUID (up to 1.35). Go to Tools -> Registers Dump and in the cpuz.txt file find the CPU information
Name Intel Pentium 4 Code name Northwood Specification Intel(R) Pentium(R) 4 CPU 2.40GHz Family/Model/Stepping F29 Extended Family/Model 0/0 Brand ID 9 Package mPGA-478 Core Stepping D1and then MSR registers dump:
MSR 0000002C 00000000 12110012 MSR 0000002A 00000000 00000000 MSR 00000017 000A0000 00000000 MSR 000001A0 00000000 00000089 MSR 0000008B 0000002A 00000000- the microcode version is stored in MS 8B and it is 2A in this example.
Other utility that displays the microcode revision is Everest.
Petr



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