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Subject: Re: Some H340 impressions

Re: Some H340 impressions

From: John Lawrence <blaquestic_at_gmail.com>
Date: 2006-01-05

why is the CPU boosted at times, and not boosted at other times?
-John
On 1/4/06, Daniel Stenberg <daniel@rockbox.org> wrote:
>
> On Tue, 3 Jan 2006, John Lawrence wrote:
>
> > I second everything Jonathan Corbet has said. In addition, sometimes the
> > scrolling decides to take a mind of its own. It continues to scroll
> after I
> > let go of the button or doesnt stop at all. Sometimes it just works
> > perfectly.
>
> The continued-scroll-after-key-release is most likely because the key
> repeats
> happen faster than the LCD gets updated.
>
> The fact that it "works sometimes" is probably because this is not an
> issue
> while "boosted" (CPU runnning at 124MHz) since then the CPU runs fast
> enough
> to update the LCD faster than the key repeat, and if you play music while
> doing this it will boost every now and then for audio decoding purposes.
>
> We've discussed several different approaches to solve this, one of course
> being to enhance the LCD update function to run faster but another way
> could
> be to increase the low CPU speed used to something like 60MHz.
>
> --
> Daniel Stenberg -- http://www.rockbox.org/ -- http://daniel.haxx.se/
>
Received on Thu Jan 5 02:38:45 2006


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