Hi Danny,
Well... I'm really glad this is so clear and simple! :-)
So... "Targeting Palm OS" lies! I'll never RTFM again! :-)
Seriously: Thanks for your point-by-point replies and advice. I'll try it
out!
Best Regards,
-----Steve Jackson
"Danny Epstein" <[EMAIL PROTECTED]> wrote in message
news:13508@palm-dev-forum...
>
> "Steve Jackson" <[EMAIL PROTECTED]> wrote in message
> news:13502@palm-dev-forum...
> > SMALL MODEL
> > -----------
> > - All jumps are "short" (16-bit direct). Applies to both intra-segment
and
> > inter-segment calls.
>
> I think inter-segment jumps are always long, even if the Small code model
is
> used.
>
> > SMART MODEL
> > -----------
> > - All intra-segment jumps are "short" (16-bit direct).
> > - All inter-segment jumps are "long" (indirect, multiple 16-bit).
>
> I think some intra-segment jumps are long. The compiler doesn't assume
that
> the segments are <32K, so if it hasn't compiled the destination yet, it
will
> use a long jump. So forward jumps are long. The exception is
intra-function
> jumps for branches and loops. The compiler assumes each function will be
> <32K, so it uses short jumps within a function.
>
> > LARGE MODEL
> > -----------
> > - All jumps are "long"
>
> Yes.
>
> > - Advice: Use SMALL model when your app is less than 32K.
>
> I recommend using the Small code model, even for large apps, unless you
have
> a segment that you just can't squeeze down to 32K (or a bit more). In this
> case, use the Smart code model. Use the Large code model for debug builds.
>
> There are several reasons why you might have difficulty squeezing all your
> segments down to <32K. You might have a lot of code that has to be in the
> first segment. You might have your code organized into files based on your
> design rather than segmentation. One technique I've used is to create
> FooSeg1.c and FooSegN.c files.
>
> As always, YMMV.
> --
> Danny Epstein
> OS Engineer, Palm Inc.
>
>
>
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
