On Tue, Sep 12, 2000 at 10:52:20AM -0300, Vidal Pereira da Silva Junior wrote:
> I wrote my own pic programmer using the 16F87x specification # DS 39025D.
> The question is:
> When I program the 16F84A the chip is totally programmed, BUT when I program
> a 16F873 or 877 device the DATA eeprom do not accept programming.

I had the same problem with my programmer
(http://www.ise.pw.edu.pl/~wzab/picprog/picprog.html - with software patched
for 16F877).
The problem however disappeared mysteriously for newer revisions of 16F877.
I couldn't find anything about any bug fixes regarding the DATA EEPROM
programming, so really don't know what has happened.
Probably Microchip has improved something without notifying the users...

--
                        Wojciech Zabolotny
                        http://www.ise.pw.edu.pl/~wzab

http://www.debian.org  Linux - free OS for free people!

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