Tempest 2k On Gp2x

[supaimposter]

Lets hope FireFox finishes this emu its looking the don, he is gonna use both cpu's


http://www.yakyak.org/viewtopic.php?t=47385

 

[K0K0NUT_h3lmut]

:huh: :blink: :wacko: :wub:

 

[Gruntfuggly]

That is one interesting thread - yet another reason that I'm going to have to buy a GP2X...

 

[Knoxximus]

Go, Firefox, GO!!

Just think! If they can get T2K to hum along on the GP2X, then *perfect* SNES will definitely happen one day!

 

[Shikaku]

Go, Firefox, GO!!

Just think! If they can get T2K to hum along on the GP2X, then *perfect* SNES will definitely happen one day!

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It looks so... shiny...

I want to see this run on the GP2X just for the graphics...

 

[gaterooze]

The best part of that thread is how he's somehow got the second CPU working pretty well for sound and other things. I hope it's not a hoax!

 

[Shikaku]

The best part of that thread is how he's somehow got the second CPU working pretty well for sound and other things. I hope it's not a hoax!

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Maybe he'll release the source or at least tell us how to use it usably....

 

[Radek]

The best part of that thread is how he's somehow got the second CPU working pretty well for sound and other things. I hope it's not a hoax!

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Maybe he'll release the source or at least tell us how to use it usably....

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The memory access is a problem but fortunately both the 920T and 940T cores of gp2x can have theirs cache lockedup. So it's possible to load a chunk of data to the second core (it has 4K data cache and 4K instruction cache) and lets it process it within its caches. When it finish just write results to the memory and repeat the cycle.

The load/store perfomance can be over 100MB/s when done with "ldm/stm" instructions. So such methods of procesing data in bulks could be very effective. I don't know yet how to do it (thought I have the documentation) but I try it eventually.

 

[DaveC]

This guy seems to be having alot of speed used up with the 68K CPU core. Does he not know of *Cyclone* that helps us with speed in NeoGeo, DrMD, and MAME?

It is weird that there are some coders for the GP2X that don't post on THIS site. I thought any coder into the GP2X posted here if they speak english, strange.

 

[ingrin]

Firefox has posted here several times... or do you mean the other guy?

 

[Rayek]

Or just go here;
http://www.gp32x.de/board/index.php?showtopic=24366&hl=