Here's how:

take the '84 and place it into any microwave oven, place on high for 3
minutes (your time may vary).  Then use your PC and any PROM burner you
might have.  From the DOS prompt type "format c: <enter>" then answer
yes to the silly question from the operating system.  Wait for the
computer to come back then place the '84 into the PROM burner and you
should be able to read anything in it.  Sometimes the less expensive
models of PROM burners won't be able to read it very well, you might
want to try to use one at work or at school, I'm sure they have nicer
units that will work fine.

Have a nice day,
Mike
 ----------
From: World Access
To: Multiple recipients of list PICLIST
Subject: pic16c84
Date: Tuesday, December 10, 1996 3:12PM

Hi,

Is it possible to bust a protected PIC16C84 ?
How can I read a protected one ?

Awaiting,
Wim Bolten
E-mail: intronic@worldaccess.nl