Tom Zerucha wrote:
> On Thu, Jul 06, 2000 at 04:20:53PM -0700, Adam Wozniak wrote:
> > I'm porting a piece of software to the Palm. It's large and complex enough that
> > I don't want to muck with it if I don't have to.
> >
> > I need more memory for data than what's in the dynamic heap. Like 256 K more.
> >
> > Do I have any easy options?
>
> OS 3.5 has a much larger dynamic heap.
>
When I compile the project in CodeWarrior, I get a total of 86K "code" and 280K "data".
(As well as all the expected link errors which follow).
> > I've begun thinking about tweaking hardware registers to give myself read/write
> > access to upper memory, but I don't exactly know how to tell what areas PalmOS
>thinks
> > are in use and what areas may be empty.
>
> There are memory unprotect calls that do what DmWrite does to access
> the memory.
>
> > (Yes, I know it's probably a bad idea, but I want to know exactly WHY it is a bad
>idea,
> > and how to make it as safe as I can).
>
> Is there a reason you need to do lots of small scattered writes so you
> can't just allocate a bunch of records in a regular database and use
> DmWrite (that is what I do in the similar circumstance).
Actually, that was a great question. It looks like a lot of this is actually just
large lookup tables. I suppose I can make them
binary resources of some kind, and then munge a pointer to point at them. Would that
ensure they don't take up memory in the
dynamic heap? Can I rely on these records being locked down for me, or would I have
to lock them myself?
--
Adam Wozniak Senior Software Design Engineer
Surveyor Corporation
[EMAIL PROTECTED] 4548 Broad Street
[EMAIL PROTECTED] San Luis Obispo, CA 93401
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