| Re: [hatari-devel] optimizing for speed (was: Beats of Rage, new Falcon game) |
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Hi,
On sunnuntai 16 joulukuu 2012, George Nakos wrote:
> Sunday, December 16, 2012, 3:02:54 PM, you wrote:
> This is more than enough evidence to me to conclude that on Atari
> 16/32 machines with hard drive, packing is really not worth it. If we
> talk about floppy releases though, yes, everything goes there!
I start to see why some people are so attached to Hatari's support
for zipped floppies. Only thing we're missing is mounting a Zip archive
of these tens of MB sized games & demos as (a read-only) GEMDOS emulated
hard disk... :-)
(I'm not going to implement that, but I would be interested to review
patches for it.)
> Bear in mind though that the
> JagCD format has no error correction ("Mr. Tramiel! We found a totally
> RAD way to cram even MOAR data than 650MB onto a single CD! We just
> have to take out the useless error correction
> data!!!!!!!!!!!111111onoenoenoeeoen"), so a wrong read will lead to a
> nice depacking crash if things go well :)
In case you're interested, here are some recent blog posts on error
check algorithm speeds:
http://fastcompression.blogspot.fi/2012/04/selecting-checksum-algorithm.html
http://fastcompression.blogspot.fi/2012/04/detecting-errors.html
No idea how much they rely on CPU cache sizes etc, but as a test
suite is mentioned, it would be possible to try their speeds on
Atari if somebody's interested.
- Eero