> From: myke predko <myke@PASSPORT.CA>
> [cut]
> Am I missing some parameter to allow EEPROM Reads and Write?  I've gone over
> the datasheets repeatedly, but I'm not having any luck.  Does anybody have
> any working code they can post?
> [cut]

Sure, but try this first...

I have used code very similar to yours and it works just fine.  If
WRERR is being asserted, perhaps there's something wrong with your
power supply.  Maybe it's just out of spec or it dips when loaded by
the current required for EEPROM write.  This is 'small', but large by
normal PIC standards.  Failing that, perhaps your EEPROM is worn out.
Since it will take thousands of write cycles per word this is unlikely
unless you pulled a 2nd hand chip, or have been really thrashing the
location in your testing.  Try using a different EEADR and see if the
same problem occurs.

Also, to check basic device operation, you should try burning the
EEPROM from your programmer and see if it reads back OK.  This is done
by

        org     0x2100                  ; Microchip std.
        de      data,data,data,...      ; Your test data bytes

in your source code, and setting the appropriate options on your burner.

Regards,
SJH
Canberra, Australia