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You can send/receive date from one core to another one. Throught a pipe, and not using the memory bus. You can decode Video on one core, and audio on the other core. Thats how GPH is using the CPU now. couse the cpu design is a little bad, you have some overhead here, explained some post...

Youre absolutly right...

Both cores are @ the same memory. Memory clock @ cpu clock does depend on each other. So, both cores run @ same speed, always ! You can not power off, one core, you can only halt it.

The design of the gp2x, 2 cpu core, is a little complicated... You can use core one, for your main code. And use the second core for some other tasks. Problem 1: CPU 1 and CPU2, can not share the SAME memory. Of course they can talk together, and exchange data between them, trough a small...

> Currently the system has been planned is in the early stages of being implemented. Currently there is no released code, but it will be linked to from here as soon as it is uploaded. Yes, i have also some projects in planing phase on my mind. :) Once again, it is possible to run stuff on the...

The cpu does not use a lot power, then he is doing nothing. The second core is only idle all the time. I think its not possible to power save one core, and run the other. But iam not shure about this...

The second core is NOT the 2D accelerator ! The gp2x, is NOT "much more powerful then the GP32@166" ! The second CPU, is a custom chip, to run small code, very fast. ( like a divx codec ) >So for people not able to muster the 2nd core, does this not then make the GP2X a GP32@200mhz? You do now...

To be honest, i cant understand, why they are using this cpu. There is only one explanation, it is damm cheap. You can use the second core, for some situations, like decoding divx. But if you want to use it for some more...

The cpu, inside the gp2x, is not a real dual core cpu. So it does not depend on what OS (linux/winCE) you are using. The OS can never use the second CPU. The second core, is more like a custom chip. Every Coder, must take care of the second core by himself, if he wants to use it. And thats...

IF you mean with TVs -> DVD players, youre right, they run with very slow CPUs(60Mhz), and can playback divx and mpeg2. BUT they are using Hardware custom Chips to do this. The gp2x must decode all in Software.

The used mplayer is modified to use the second core, to decode divx stuff. So for divx playback the second core is a must have, it could also work without a second core (the gp32 can playback divx movies fullspeed).

PSX @ playable speed, is a nice dream... But GBA playable (or full speed) is possible, by using the second core. You mean, only rewrite all stuff, from scratch ? Did you ever wrote an emulator ? From scratch ? 99.9999% of all coders here, would never start sutch a project. TOO BIG. The GBA...

They figured out a cool way, how to run gba stuff on the gp32. They do not emulate the cpu, they run the GBA cpu stuff directly on the gp32 cpu, without emulating the cpu core, they only emulate the missing 2D chip, and other GBA parts in software. This is a cool example, of how to use 2 cpu...

If you cant understand the truth, youre in a long row with others... I do respect the gp2x, i never wrote something against it, but if someone ask, what about the second cpu, dont you think i should tell him the truth ? If youre a good coder, why not show me, how easy it is to speed up snes...

First, keep in mind, the second core, is useless ! why ? Problem 1: To use the second core, YOU must rewrite parts of the Emulator, who want to use the second core. There is no magic around this, all docs are available now, to do this. But the Problem is, that YOU must rewrite parts of the...

what kind of recall ? ( link? )

The gp32 mp3player needs 66Mhz cpuclock to decode/playback any mp3 @ normal speed. To do some pitch, up to 4x, the 200Mhz of the gp2x is more you ever need. No need for HH, linux would be enought.

Yeah, did i miss this cool thread ? Okay, my statement to this. GPH is using GPL´d Software. They must release the Sourcecode, on demand. Or free on their web site. They are not contributing/respecting/supporting the mplayer team. They make money with their (50% mplayer / 50% linux based)...

The sourcecode for the used mediaplayer on gp2x is the mplayer from linux. Project is open source, and GPL, means they must release the source.

Youre expecting too mutch... If you want this: or this: you must wait forever...