--- John Flynn <query_me2001@YAHOO.CO.UK> wrote: >
--- Mike Harrison <mike@WHITEWING.CO.UK> wrote: >
> On
> Thu, 3 Jun 2004 10:44:16 +0200, you wrote:
> >
> > >John Flynn wrote :
> > >
> > >> I'm new to PIC could anyone let me know the
> > details of
> > >> what is requried to port code from a PIC16C74
> to
> > a
> > >> PIC16F74 microcontroller.
> > >>
> > >> Can I use the hex file targeted for a PIC16C74
> on
> > a
> > >> PIC16F74, if not what do I neet to do to get it
> > to
> > >> work?
> > >
> > >Hi !
> > >
> > >First I've not read and compared the data sheets
> > for these PICs
> > >(that's your homework), but what you at least
> > should do, is
> > >to re-build the hex file for the new target PIC.
> > Maybe you will
> > >get some signs of problems already in the
> assembly
> > process...
> > >
> > >Jan-Erik.
> >
> > Code should be no problem - the only difference
> may
> > be the config bits.
> >
>
> Just to clarify, it is actually the PIC16C74A that I
> am using.
>
> I've been looking at the datasheets and found that
> the
> only difference is in the Code Protection bits
> (CP1-CP0) in the PIC16C74A and only CP0 in the
> PIC16F74.
>
> If the Configuration Word for the PIC16C74A had CP1
> and CP0 both set to one, would the exact same hex
> file
> work on the PIC16F74? Can I examine the HEX file to
> determine the state of the config register for the
> PIC16C74A ?
>
> I would prefer not to change or recompile the code
> at
> all.
>
> Thanks,
> J
>

Can anyone provide any feedback on this one?

Thank,
J






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