Thanks Andy, but if you re-read the question, you will see it is in the past tense. I hope you did not do all these things !

We have one example from DUH about a PIC being used incorrectly, but he does not say the 8051 would have been better.

What I ask is if you do have 8051 experience, have you ever used it (8051,8052 family) in an innaprropriate design, and what was it ?

That is, I ask for some confessions !