Author: Christophe Theron
Date: 08:16:19 12/13/02
Go up one level in this thread
On December 13, 2002 at 05:57:33, Tord Romstad wrote:
>On December 12, 2002 at 00:49:28, Christophe Theron wrote:
>
>>>>Chess Tiger 15.0 is PalmOS 5 ready. That means it works fine on PalmOS 5.
>>>>
>>>>There will be an ARM-optimized version later.
>>
>>>what is the estimated gain of this arm version later
>>
>>Something like ten times faster. An increase of 200 to 250 elo points.
>
>This is excellent news! I received my Tungsten T (my first handheld computer)
>yesterday. Of course, Chess Tiger and Chess Genius were among the first
>programs I downloaded. Unfortunately, I did not succeed in registering
>Chess Tiger yesterday night (some web page failed to load -- probably just
>a temporary problem, I will try again tonight), so Chess Genius is still the
>only handheld program I have tested at full strength. After playing a couple
>of blitz games against CG on the bus this morning, I am very disappointed by
>the playing strength (in particular, CG seems to have an extremely limited
>understanding of king safety), and I'm afraid I will also not be satisfied
>with the current version of CT, even if it's 100-200 elo points stronger.
>If the speed improves by a factor of 10, however, I am sure it will be strong
>enough.
OK, so I need to explain again.
Current Palm programs are going to be faster on the Tungsten only if:
1) they make a lot of calls to the system.
2) they are recompiled in native ARM mode.
Chess Tiger (current version) and ChessGenius (current version) are in none of
the above category.
That means that at this time your ARM processor is just executing 68000 code. So
it's extremely slow.
Actually it's already a terrific performance for the Tungsten to be able to run
applications in emulation mode at the same speed (or almost) than a real
68000!!!
In the future, when Chess Tiger is recompiled in native ARM mode, you are going
to see an incredible speed performance. My guess is 10x faster.
For ChessGenius it's a different story. It is written in 68000 assembly, so it
cannot be recompiled in ARM native mode. So it will probably continue to run in
emulation mode on the PalmOS 5 handhelds. Unless Richard Lang rewrites it
completely.
Christophe
>I also have a question regarding the (non-ARM-optimized) CT15. Will the new
>version support the 320x320 resolution? CT14.9 looks somewhat ugly compared
>to CG1.6 on my hi-res screen.
>
>Of course, I would also like to do some development for my Palm myself.
>What development tools do you use? Do you have any books or other resources
>to recommend?
>
>Tord
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