But it's a meaningless number the way you have quoted it. For instance a 1Mhz 6502 and 4Mhz Z80 were equivalent because the 6502 took one clock cycle for the fetch execute cycle, and the Z80 took four.
So what is the frequency measuring?
I've used plenty of emulators, 8080, Z80, 6502, 680x0, even PDP-11, what is this fictiuous one doing that the others don't? Or is it because you want to write one?