On Tue, Jul 26, 2011 at 12:58:40PM -0400, Isaac Marino Bavaresco wrote:
> Em 26/7/2011 13:35, alan.b.pearce@stfc.ac.uk escreveu:
> >>> (absolute mode versus relative mode)
> >>> I don't think the question is that crucial. As you pointed out in you=
r
> >>> other post, that assembly is important to get a hands on view of the
> >>> architecture. Once someone has that under their belt, they can pretty
> >>> easily move on to an HLL that abstracts a lot of the details of pagin=
g,
> >>> banking, and the like.
> >> One advantage of relative mode (I think, I have not explored this
> >> enough) is that it is easier to mix with C.
> > Isn't it more a case of you have to use relative to mix it with C, as y=
ou have to use the linker, and the linker cannot deal with absolute mode?
>=20
>=20
> I think absolute mode is just a left-over from the past. It is much
> easier to use relative mode even in assembly, you don't need to manage
> the location of the sections by yourself. This can be hard and
> error-prone in mid-to-large projects.

It's a left over from the past that has been embedded into the fabric of
the Internet. Virtually every tutorial on PICs is based in absolute mode.
As a former colleague of mine always used to say "You love what you learn."

If there were 100 tutorials like this one:

http://www.mcuhobby.com/articles.php?article_id=3D10&rowstart=3D0

Then more folks would use it from the jump.

BAJ

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Byron A. Jeff
Department Chair: IT/CS/CNET
College of Information and Mathematical Sciences
Clayton State University
http://cims.clayton.edu/bjeff
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