Just to add a finesse point that goes a little bit beyond your question:
Although the LCDs claim to show 65536 different colors in 16-bit mode, and claim to
support palette choices in other modes of
262,144 color choices, the LCD's I've seen so far (can't comment on the CLIE) really
can only display 4096 colors.
However, what they do is provide hardware dithering to mimic 262,144 color
possibilities out of the 4096.
But I've gotten better visual results by just assuming a 4096 color palette (the real,
pure colors) and dithering my images to it
using error diffusion dithering.
David Fedor wrote:
> >I would like to know how many colors i can display on the Palm IIIc
> >(simultaneous) ? and the Palm m505 ?
>
> On a Palm IIIc device (or other 8-bit devices), you've got an 8-bit
> palette, so you can show 256 different colors at the same time. By
> changing the selection of colors in the palette, you have access to a
> larger number of colors than just 256... but not at the same time.
>
> On a Palm m505 device (or other 16-bit devices), you could theoretically
> show 65536 different colors, but there aren't that many pixels on the
> screen; there's 160x160=25600 pixels so the answer to your "maximum colors
> showing at once" question is constrained by the size of the screen. But a
> 320x320 screen such as the new Sony Clie could show all 65536 at the same
> time, though I'm no expert on that device and so don't hold me to that.
>
> Sometimes there are other constraints imposed by the screen hardware, like
> some screens can only show 8 different intensities of blue, 8 of red, and 4
> of green. That would still work out to being 256 different colors, though
> you couldn't have them all be shades of blue. This isn't Palm-specific at
> all; this is just how screens work on computers.
>
> -David Fedor
> Palm Developer Support
>
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