Thank you guys so much for getting back to us on this. I think this is a perfect
example of how fantastic your development support is! The fact that we could get the
results of an internal system architecture discussion across the hardware and OS
groups in a few days is totally amazing!
I suspect that if you ever do create a +16MB device without the changes mentioned, you
will need to educate developers on this issue in advance. I bet a lot of people are
assuming a single heap memory architecture.
If you ever make a decision to make those changes, please let us know, as that would
greatly simplify some low level parts of my code.
Thanks,
Shannon
>So, we talked about this a bunch internally. And Bob gave much (most?) of
>this answer, but just for the record...
>
>The basic answer is that given the current (internal and subject to change)
>implementation of the Data Manager, a heap can't be larger than 16
>megabytes. So we would have to have two heaps if we were to ship a 32
>megabyte device without first changing some of the internal structures of
>the Data Manager (a simple matter of programming, as they say.)
>
>So the question is, given the assumption that there'd be a Palm OS device
>with more than 32 megabytes of directly accessible ram, would it be before
>or after we change the Data Manager's internal code? (While keeping the
>APIs the same, one would assume.) The OS team wasn't willing to guarantee
>that such a device would not ship from us or a licensee without first
>changing the OS code.
>
>So the answer is no, don't make that assumption that there'll only be one
>storage heap forever and ever. DmResizeRecord might return a different
>handle than the one it was given.
>
>-David Fedor
>Palm Developer Support
>
>
>
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