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Old 12-30-2005, 11:14   #16
matthannan
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Seriously, davvv!

Could you rock out a little harder?

I have been wondering if anyone had cracked the A2 yet and this morning I found the Korean site showing the guts and followed the trail to here.

Keep up the good work. We'll be displaying pdf files before you know it!
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Old 12-30-2005, 11:51   #17
Martinp
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Where is the link to that Korean site matthanna?
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Old 12-30-2005, 13:23   #18
matthannan
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http://iaudiophile.net/comment.php?comment.news.133

I picked it up from a Google search that had it at DAPReview, which linked back to here.
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Old 12-30-2005, 13:51   #19
Martinp
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Oh, that one!

Hehe - yeah - why didn't I remember?
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Old 12-30-2005, 22:03   #20
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And yet some more information about the chipset: http://www.tikorea.co.kr/tidc2/TIDC-...2004.04.14.pdf
Right now, I'm trying to get a Linux box working so I can attempt to compile ucLinux (http://www.uclinux.org) for ARM processors. I have no idea if it will work, but it's worth a shot.

Some great information on compiling ucLinux: http://www.cyberguard.info/snapgear/tb20020807.html
A repository for ucLinux ports: http://www.uclinux.org/pub/uClinux/ports/

If anyone gets anything to work, do tell I'd be happy to know that I'm not the only one trying to figure this out.

I just stumbled on this, and it seems very interesting, I'll keep you guys posted. (http://www.arm.linux.org.uk and http://www.fiveanddime.net/kernel/li...11.2/arch/arm/)

Last edited by davvv; 12-30-2005 at 22:23..
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Old 01-04-2006, 02:48   #21
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Well some more stuff I tried out lately.

I was able to display (on my A2) instead of "Application Version" .. "Applicationg VersioX" or pretty much any other string of that set length with some simple HEX editing. Notice I said "that set length". I also tried a "Hello World!" line, and my A2 wouldn't boot.

PS: Still working on that linux box so I can attempt to compile an ELF file for DM320.
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Old 01-06-2006, 13:43   #22
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Quote:
Originally Posted by davvv
Well some more stuff I tried out lately.

I was able to display (on my A2) instead of "Application Version" .. "Applicationg VersioX" or pretty much any other string of that set length with some simple HEX editing. Notice I said "that set length". I also tried a "Hello World!" line, and my A2 wouldn't boot.

PS: Still working on that linux box so I can attempt to compile an ELF file for DM320.
Rock on man. I wish I could help somehow, but I'm a complete noob to hacking and modding. I'm aware of the wonderful results of modding. My PS2 for example. I would love to be able run some old school games on the A2. Just gotta mod a controller to work with the usb. Shouldn't be too hard. Keep us updated!

"The A2 "CPU" is called the DM320"

I wonder how that compares to the amd alchemy chip in the istation v43s... Looks like I got some reading to do. PDF support sounds great
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Old 01-11-2006, 03:03   #23
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Wish I had an A2 to hack on...

About changing strings... follow the strings with a binary 0 (null byte), and it should work.

Now, about getting an A2... anybody willing to donate? :bigsmile:
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Old 01-14-2006, 01:32   #24
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Sounds a lot like the PSP file system. Modified Linux core, ELF file system, You hackers get to work!
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Old 01-26-2006, 16:44   #25
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eXity, it is not true that TI is the people to contact for the kernel. TI is not distributing the kernel to you, COWON is. therefor it is cowon's obligation to distribute *matching* sources for the firmware images they have on their webpages.

re: http://gpl-violations.org/faq/vendor-faq.html

It does not matter if cowon has or has not modified the kernel the distribute. Also, A2 uses u-boot bootloader, which is GPL and is apparently modified by COWON themselfs.

a2_player is statically linked binary, which includes various LGPL (gtk glibc spotted) libraries, and it's perfectly ok to do so. however, while LGPL allows static linking, the sources of the LGPL libraries themself have to be provided (again, even if unmodified).

if cowon keeps insisting that they don't need to publish any sources, please contact gpl-violations.org.

for any prospective hackers, you need to open the device and try to find the serial port pins, if you want to get anywhere. warranty void, read your homework first etc. after getting serial console attached without letting the magic smoke out, you can start your long road in replacing a2_player with your player notice thatthe dsp codecs need to digged out of a2_player and you can't redistribute them.. and setting up dsp to use them is the most challengin task ahead.

The proper way to dsp to run http://dspgateway.sf.net/ on the A2, and write your own codecs for the dsp.. toolchains are available. Just a lot more learning and work to do - and huge risk of getting hired by someone - capable dsp codec programmers are a rare breed
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Old 03-01-2006, 21:10   #26
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Source to A2's GPL code?

Not sure how relevant this is, but iAudio posted a notice of the "GNU GENERAL PUBLIC LICENSE" on its website together with a link to a "cowon_pmp_a2_src_1.59_GPL.tar.gz".
I'm guessing this is the source file, haven't gotten a look at it as I'm still downloading it. Also guessing that its the GPL source for firmware version 1.59

Caution: The file is 78.25MB in size.

[The actual notice]
* Notice of GNU GENERAL PUBLIC LICENSE
This product has some free software which are copyrighted by the Free Software Foundation and the library includes the software is subject to the observance of the terms of the GNU General Public License as published by the Free Software Foundation. [Download]

[The actual link]
http://eng.iaudio.com/download/gnu/c....59_GPL.tar.gz

[The page where this notice can be found]
http://eng.iaudio.com/product/product_A2_spec.php

Have Fun :bigsmile:
- Szern

Last edited by szern; 03-01-2006 at 23:57..
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Old 03-01-2006, 23:31   #27
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It is indeed the source code for the 1.59 firmware really nice catch

Looks like finaly we get our hands on it and it will be only a matter of time now till we get some new applications for this great PMP

Too bad that the source code is commented but in corean
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Old 03-02-2006, 18:17   #28
nathan
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Great job on pointing out the link to the source code.

Exity thanks for going back and forth with Cowon on this one.

Can you create a new forum for developers? It would be nice if we could start an area where we can create documentation about the released source, how to setup a development environment etc. without having to sort through all the general postings.

We could also start creating threads on how we can best divide the work. Maybe a sourceforge project created with the source code as a base?

Who else is interested in this?

(I look forward to seeing the feedback from my post once I am back from vacation in a week)
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Old 03-03-2006, 03:33   #29
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YEAH! that would rule!!!
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Old 03-03-2006, 05:33   #30
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Quote:
Originally Posted by nathan
Great job on pointing out the link to the source code.

Exity thanks for going back and forth with Cowon on this one.

Can you create a new forum for developers? It would be nice if we could start an area where we can create documentation about the released source, how to setup a development environment etc. without having to sort through all the general postings.

We could also start creating threads on how we can best divide the work. Maybe a sourceforge project created with the source code as a base?

Who else is interested in this?

(I look forward to seeing the feedback from my post once I am back from vacation in a week)

100% support you:bigthumbs
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