How to read Serial number programmed into PIC

[falingtrea]

The picture he put in comes from the meprog application. The help file has this table:

Device Type	Code	Data EEPROM	ID
		Address	Address		Address
12-bit core	0-1FF	none		200-203
		0-3FF	none		400-403
		0-7FF	none		800-803
14-bit core	0-1FFF	2100-21FF	2000-2003
17Cxxx		0-3FFF	none		none
18Xxxxx		0-1FFFF	F00000-F003FF	200000-200007
24FJxxx		0-157FE	none		none
24HJxxxx	0-2ABFE	none		F80010-F80016
30Fxxxx		0-17FFE	7FF000-7FFFFE	none
33FJxxxx	0-2ABFE	none		F80010-F80016

From one of the data sheets for a 14 bit core I got this:

13.10 ID Locations
Four memory locations (2000h - 2003h) are designated as ID locations where the user can store checksum or other code identification numbers. These locations are not accessible during normal execution, but are readable and writable during program/verify. It is recommended that only the four least significant bits of the ID location are used.

So the answer to his question is that the locations programmed by the meprog serial number function are only accessable during program/verify.