Rudy Wieser wrote
>> A PIC can _NOT_ be written to like a standard 27xxx EPROM.
Communication
>> with the PIC (while programming) goes over a three wire bus :
>> Program-enable/reset, Clock and Data.  You need a specialized programmer
>> for this kind of stuff.  Alas ...

Actually PICs have two programming modes.  In the cheap programmers like
the one that I use, the serial mode that Rudy is talking about is used.
But there is also a parallel programming protocol so it can be written by
the kind of hardware that writes EPROM chips.  But you will need a
personality board specifically for the PICs, and because the cheap
programmers are so successful many EPROM programmers that I have seen do
not have good PIC support.

Vance Gloster           Friendship is far more tragic than love.
vance@eni.net                       It lasts longer. -Oscar Wilde