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Subject: Re: Optimized bitswap
From: Linus Nielsen Feltzing (
Date: 2002-08-19

On Mon, 19 Aug 2002 17:52:03 +0200 (CEST), Magnus Holmgren wrote:
> I have now tested the "small table" bitwap with a 320 kbps file,
> and it worked just fine on a player, so now Recorder tests could be
> of interest.

Great! That gives us some hope.

> I've also looked a little on an assembler version, and I believe it
> would be possible to write more efficient code (like half the size
> or so, compared with the output from GCC 3.1.1), but I'm not
> familiar enough with embedded assembler in GCC (or SH1 assembler,
> for that matter) to complete it. Some stuff must be in r0 AFAICS,
> which complicates things.

I have been thinking, and I will give this a try in the next couple
of days.


Linus Nielsen Feltzing, on 2002-08-19

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