2D barcodes

[g0b]

Hi,

Anybody here already tried to decode datamatrix barcodes on Intel "modern" CPUs ? Maybe it could be a way to identify ES chips that have no marking except a sSpec and the datamatrix (type, frequency, cache size...) ?

Is it worth I try to work on this, or anybody already did it ?

g0b

[Mixeur]

lol.

Good luck

[g0b]

Why ? What's so funny ?

g0b

[Mixeur]

Because it is impossible to decode it.
Look how it is difficult to decode simple number series like on IBM or Cyrix chips.

Do you imagine with a 2d matrix of 20x20 points ?

[g0b]

Decoding a datamatrix ("2D barcode") into its corresponding alphanumeric ascii code is not an extremly difficult task. The algorithm is well known and public.

This is what I expect :

When you decode the datamatrix of a SL264, maybe you get the same alphanumeric data written next to it (80522PX233512 for instance) which is theorically possible since you can store up to 18 alphanumerical characters in a 20x20 datamatrix.

When you decode the datamatrix of a QCH5, maybe you can extract more or less clear information that could be usefull to identify it. maybe not.

I just wanted to know if so ever tried this before I waste my time on this...

g0b

[Mixeur]

You can store 50 characters (8bits / characters), no ?

One time, I looked 2d-matrix of two same cpu (2 PII-400), and I concluded it was completely different.

But I didn't looked very accurately.
You can try and tell us the result.

[g0b]