Fact is, Code Prot. can be disabled with these chips by totally
erasing them. This does not work with JW-Types of course.

regards,
   Reelf

David Stubbs schrieb:
>=20
> Reelf,
>=20
> Point 5 at http://www.piclist.com/techref/piclist/begin.htm says "DO NO=
T
> ENABLE CODE PROTECTION! No, it can't be undone. You will have to replac=
e
> the chip. Read the documentation on your programmer to figure out how t=
o
> avoid this." However, I tend to disagree with this as well. I'm sure yo=
u
> can disable it.
>=20
> Dave
>=20
> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Reelf Monsees
> Sent: 13 March 2002 07:13
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]: Unexplained Programming Error PIC16F84
>=20
> yep, just erase the chip.
>=20
> Reelf
>=20
> Lindsay Pointu schrieb:
> >
> > Hi David
> >
> > Thanks very much for your comments. I've thoroughly tested the
> programmer
> > and all's OK.
> >
> > I would tend to agree with you that I may have enabled code protect.
> Is
> > there any way this can be reversed?
> >
> > Cheers
> >
> > ----- Original Message -----
> > From: "David Stubbs" <Dave@NTI-SOLUTIONS.ORG>
> > To: <PICLIST@MITVMA.MIT.EDU>
> > Sent: Tuesday, March 12, 2002 8:43 PM
> > Subject: Re: [PIC]: Unexplained Programming Error PIC16F84
> >
> > > Lindsay,
> > >
> > > Program: address =3D  0000  buffer =3D 2810  device =3D 3FFF
> > >
> > > That sounds like it is trying to write 2810 (GOTO 10) to the chip a=
t
> > > address 0000 but when it reads it back to verify it is getting 3FFF
> > > (That's all 1's from the chip).
> > >
> > > Therefore you have a problem with the programmer. If the software
> has a
> > > hardware test function try using that with a multimeter to test tha=
t
> it
> > > is working as it should.
> > >
> > > Or there is a very slight chance that you have enabled code protect
> by
> > > accident, which would cause a program to fail. Try another chip.
> > >
> > > Dave
> > >
> > > -----Original Message-----
> > > From: pic microcontroller discussion list
> > > [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Lindsay Pointu
> > > Sent: 12 March 2002 12:32
> > > To: PICLIST@MITVMA.MIT.EDU
> > > Subject: [PIC]: Unexplained Programming Error PIC16F84
> > >
> > > Hi
> > >
> > > I will probably be taken to task over this, but please bear with a
> > > newbie who wants to share your passion....
> > >
> > > Programmer is the kit  (Ref no. 81) based on the article by Charles
> > > Manning in Elctronics Australia, which has passed all tests
> > > successfully.
> > > Program is the lights.hex test program supplied with the kit (Other
> > > programs have also been tried)
> > > Programming software is Picall Windows version 1.10d - Feb 2002
> (others
> > > have also been tried, including a full simulation run in MPLAB)
> > >
> > > The prblem is that whenever the chip is programmed I get the error
> > > message:
> > >
> > > Program: address =3D  0000  buffer =3D 2810  device =3D 3FFF
> > >
> > > As a matter of fact, whatever program I try to download to the chip=
,
> I
> > > invariably get the same message with whatever is in the buffer at
> > > address 0000.
> > >
> > > All possible fuse combinations have also been tried.
> > >
> > > Can anyone please put me out of my misery?
> > >
> > > Thanks
> > >
> > > Lindsay Pointu <lpointu@intnet.mu>
> > >
> > > --
> > > http://www.piclist.com hint: To leave the PICList
> > > mailto:piclist-unsubscribe-request@mitvma.mit.edu
> > >
> > > --
> > > http://www.piclist.com hint: To leave the PICList
> > > mailto:piclist-unsubscribe-request@mitvma.mit.edu
> > >
> > >
> >
> > --
> > http://www.piclist.com hint: To leave the PICList
> > mailto:piclist-unsubscribe-request@mitvma.mit.edu
>=20
> --
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>              Bamberg & Monsees GbR
>          Steindamm 22 * D-28719 Bremen
>    Fon +49-421-646775 * Fax +49-421-646785
>              http://www.sywitec.de/
>=20
> --
> http://www.piclist.com hint: PICList Posts must start with ONE topic:
> [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads
>=20
> --
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--=20
SyWiTec *  Systeme f=FCr Wissenschaft und Technik
             Bamberg & Monsees GbR
         Steindamm 22 * D-28719 Bremen
   Fon +49-421-646775 * Fax +49-421-646785
             http://www.sywitec.de/

--
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