dev builds
themes manual
device status forums
mailing lists
IRC bugs
dev guide

Rockbox mail archive

Subject: Re: Some H340 impressions

Re: Some H340 impressions

From: John Lawrence <>
Date: 2006-01-05

why is the CPU boosted at times, and not boosted at other times?
On 1/4/06, Daniel Stenberg <> 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 -- --
Received on Thu Jan 5 02:38:45 2006

Page was last modified "Jan 10 2012" The Rockbox Crew