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e-Reader dissection   Message List  
Reply | Forward Message #14691 of 15019 |
RE: [gbadev] Re: e-Reader dissection

That might not be entirely true because the BIN data contains less header
information than the RAW data. There are 48 bytes of header data in the RAW
data versus 12 bytes in the BIN data. The header data that gets dropped
includes yet to be identified randomly looking data. It is better to simply
repair the RAW data than to convert it first to BIN and then back to RAW. In
fact, I have the RAW-to-BIN decoding running on my PC as native x86 code,
and could, if I had the time, make a tool that could repair the RAW data.
Currently my priority is to turn my "decoder" into an "encoder" so that we
can FINALLY start generating our own dotcodes, containing our own mini-games
or other stuff.

-----Original Message-----
From: Damien Good [mailto:d_good@...]
Sent: donderdag 1 januari 2004 23:17
To: gbadev@yahoogroups.com
Subject: Re: [gbadev] Re: e-Reader dissection

although, if the reed solomon encoding/decoding process gets figured out,
then I am sure a 100% error free raw file can be made from the error free
bin file.


----- Original Message -----
From: "Tim Schuerewegen" <Tim.Schuerewegen@...>
To: <gbadev@yahoogroups.com>
Sent: Thursday, January 01, 2004 5:43 AM
Subject: RE: [gbadev] Re: e-Reader dissection


> One important thing that people ought to know is that the RAW data is not
> 100% error free. If you would scan/dump the same dotcode over and over
> again, you will get slightly different RAW data each time. These errors
get
> corrected by the Reed-Solomon decoding of the e-Reader and the resulting
BIN
> data is therefore error free. Remember this if you decide to print out
some
> dotcodes using my printing tool. E.g. if you have printed a dotcode based
on
> a RAW dump containing lots of errors, then you will add these "printed"
> errors to your own "scanned" errors and lower the chance of getting a
> successful read.
>
> -----Original Message-----
> From: Damien Good [mailto:d_good@...]
> Sent: donderdag 1 januari 2004 13:07
> To: gbadev@yahoogroups.com
> Subject: Re: [gbadev] Re: e-Reader dissection
>
> more e-reader info at http://www.alpha-ii.com/caitsith2/ereader
>
> the released bin/raw data of the e-reader cards might cause controversy,
but
> at the same time, the items these cards unlock, can also be unlocked with
an
> action replay, and the bin/raw data is very similar, that it might help
> with the reed-solomon code cracking. (heck, the dotcodes on the actual
> powerup cards look very similar, with only a few bytes in the bin data,
and
> maybe 20-60 bytes in the raw data being different.)
>
>
>
>
>
>
>
>
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Thu Jan 1, 2004 11:02 pm

firefly0072001
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Message #14691 of 15019 |
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although, if the reed solomon encoding/decoding process gets figured out, then I am sure a 100% error free raw file can be made from the error free bin file. ...
Damien Good
caitsith6502
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Jan 1, 2004
10:18 pm

That might not be entirely true because the BIN data contains less header information than the RAW data. There are 48 bytes of header data in the RAW data...
Tim Schuerewegen
firefly0072001
Offline Send Email
Jan 1, 2004
11:08 pm

Just to let everyone know that the Reed Solomon error correction used by the Nintendo e-Reader has been finally figured out. You can download the first custom...
Tim Schuerewegen
firefly0072001
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Apr 19, 2004
6:14 am

What is the correct way to print these dot codes? Will a normal inkjet print it at 300 dpi? ... From: "Tim Schuerewegen" <Tim.Schuerewegen@...> To:...
Daniel
webmaster@...
Send Email
Apr 19, 2004
10:08 pm

With a little bit of luck you can print dot codes on a (nowadays) standard inkjet printer. The "lowest" I could go on my printer for an acceptable result was...
Tim Schuerewegen
firefly0072001
Offline Send Email
Apr 20, 2004
4:29 am

Thank you for all you effort in this!!!!!!! I look foward to being able to print my own mini-demos and games on paper. All I have is a Hp 750 with a 600 dpi...
Daniel
webmaster@...
Send Email
Apr 20, 2004
10:28 pm
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