> However, while I'm pretty sure Palm OS has run on VZ boards at the
> licensees, no current VZ-based device has hardware that exactly matches
> a board.  The m500 may be the closest -- all the color VZ devices use
> external LCD controller.

The VZ has an onboard (up to) 8-bit bus LCD controller so there would really
be no reason to use an external one if you were going to redo the PCB and
intended to use a BW LDC display. However for Color LCDs, that would
probably then be true as I believe the LCD controller on the VZ only
addresses 16 levels of gray.

I've heard that the only device running on a Super VZ at the moment is
some/all sony Clie, I'm not sure though. The super VZ is pretty amazing in
terms of what comes on it SD/MMC/Memory stick/I2C/USB/Color LCD controoler
etc etc .... but I guess it hasn't been fully adopted yet as it's still very
new and also the ARM is coming right up its ally.

> Small upgrades are RAM patches, but major updates actually rewrite the
> flash.  Look at sites like romeo.sourceforge.com for some more info on
> Palm OS images.

How do RAM patches work? that's probably quite a complicated question ...
but in simplistic terms, does the OS reference some bits of RAM memory
everytime it executes, and the patches update these memory locations?

Thanks for the link ... I will look into it.

Hemon



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