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e-Reader dissection   Message List  
Reply | Forward Message #14689 of 15019 |
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.)







Thu Jan 1, 2004 1:43 pm

firefly0072001
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Message #14689 of 15019 |
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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,...
Damien Good
caitsith6502
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Jan 1, 2004
1:24 pm

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...
Tim Schuerewegen
firefly0072001
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Jan 1, 2004
1:51 pm

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
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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@...
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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
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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@...
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Apr 20, 2004
10:28 pm
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