Oh, oh, Thomas, pray, that Erik will not read your posting... {grin}

Joke aside, it seems to me that this is a very, very old HMOS part, needing more than 150mA supply current and becoming so hot, that you can also use it as a toaster...

I would give him bread of charity.

By the way, when you want to program a microcontroller specification of manufacturer has exactly to be obeyed. I don't know exact differencies between 8751 from INTEL and AMD, but I would first assume that they are different.
And the phrase 'quick pulse programming' doesn't tell much. Aren't there different protocols arround all called 'quick pulse programming'?

Bye,
Kai