The problem is the 8086 has a nonmaskable interrupt that uses the stack, and software can’t stop it. Failure analysis back the 1970s and 1980s was fun. An optical microscope would do most of it.

For any given processor it’s generally easy to find a statistic on the number of transistors used to construct it, with the famous Intel 8086 CPU generally said to contain 29,000 transistors.