> I'm have a Picstart Plus programmer and when i program a pic 14000
> magically the protection bit is set and the pic converts  in o.t.p . What
> hapend?
> Sometimes when i read  the pic configuration an illegal legend in the
> protection bit apear.
>

I saw similar problems and called Microchip about this and this was their
response:

>From Kurt.Kuhlmann@microchip.com Wed Nov 19 16:51:35 1997
Mime-Version: 1.0
To: daver (Dave Reinagel)
Cc: philw@trinity-tech.com (Phil Wiseman)
Subject: Re[3]: info
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...

> The issue at that point was that the preliminary data pages (which
> as of Sept 29 were still the most up-to-date ones for the PIC14000
> (DS40122B) state on page 75 state that the configuration word at
> location 2007h, bits 13-8 are all reserved and set to 1.  However,
> the P14000.inc file for AN624 use these upper bits, and have dif-
> fering bit definitions that those listed in the data pages.  What
> is the correct meaning for the bits at address 2007h?

______________________________ Reply Separator _________________________________
Subject: Re[2]: info
Author:  Kurt Kuhlmann at nebula
Date:    10/22/97 9:43 AM


     It is confusing, but bits 13-8 are used in an obscure and not
     published way relating to code protection, both for the cal space and
     the program space.  In your code, you just need to concern yourself
     with CPC_ON/OFF  and CP_ON/OFF.  The bits will be set or cleared
     properly.  The new datasheet should clear up this confusion.