How to extract a list of supported CPUs from a BIOS?

Is there a way to extract a CPU support list form a BIOS?

I have an engineering sample CPU so official CPU support list from my motherboard’s vendor isn’t helpful.

I would like to determine when was microcode for my engineering sample CPU added to BIOS.

You can use MCExtractor to see the CPU microcodes inside your BIOS and check whether your CPU’s CPUID is included.