How to get current CPU Microcode ID

作者: 常世勳

Sample code:

Mov ecx, 08Bh
Xor eax, eax
Xor edx, edx
WRMSR
Mov eax, 1
CPUID
Mov ecx, 08Bh
RDMSR

Will be place in EDX.

If there is an update currently active in the processor, it’s update revision is
returned in the EDX register after RDMSR instruction has completed.