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Subject: Re: GMini 120 disassembly
From: Laurent Giroud (laurent.giroud_at_libertysurf.fr)
Date: 2003-12-26


I found your original in the archives and it mentions this URL :
http://www.linenberg.com/gmini120.zip

however the file it points to doesn't seem to be there anymore.

Is there additionnal data in it that you did not mention within your mail or do you think there is more useful material in it ?

Thanks,

Laurent

On Wed, 24 Dec 2003 11:37:32 -0500, elinenbe_at_umich.edu wrote:
> I had already taken apart the Gmini, but did not go further then listing all the
> chips, etc. You can check it out in the archives. This was about 2 months
> ago.
>
> -eric
>
> > Hi,
> >
> > given the low number of answers, I decided to disassemble the GMini
> > yesterday. So, here's what I found so far.
> >
> > I made a few pictures, they haven't been sorted or appropriately scaled yet
> > so they are quite crappy but it's better than nothing for those who may be
> > interested : http://lgiroud.chez.tiscali.fr/photos/
> >
> > Note that many of them look the same, it's raw material and not a
> > presentation/documentation of any kind :)
> >
> > The Gmini is quite hard to disassemble without any insight and I broke a
> > screw "support" and bent three pins during the process so take care if you
> > are willing to try it too.
> >
> > A tork screwdriver size 6 is needed to remove the two screws on the cover,
> > after this, the back cover must be removed first, it can be acheived by
> > inserting a flat screwdriver in the separation between the two covers and
> > gently pulling one cover up while pushing the other down (I'll take
> > photographs, it's not easy to get it textually ;).
> > After that, a copper plate must be removed (easy) and then the hard drive can
> > be pulled off after "squeezing" one of the two rubbers on the sides and using
> > a flat screwdriver to separate it from its plug.
> >
> > Here's what the inside looks like after the hard drive is removed :
> >
> > http://lgiroud.chez.tiscali.fr/photos/IMG_0182.JPG
> >
> > The writings on the only visible chip of the board can be read on this
> > picture.
> > -> the chip is a USB97C202, ie an "USB 2.0 ATA/ATAPI Controller" which data
> > sheet can be found here :
> > http://www.smsc.com/main/catalog/usb97c202.html
> >
> > I have no idea if it's better than the ISD 200/300 chips on the other archos
> > models.
> >
> > The grey rectangle on the above picture seems to be the battery, it's
> > soldered on the mother board on at least two points and I had to stop the
> > disassembly there since I haven't got my soldering iron with me now. I hope
> > to have one within two days at most.
> >
> > I guess the CPU lies under the battery, but there are screws maintaining the
> > front cover stuck to the mother board and those screws are lying under the
> > battery. So the CPU cannot be seen without removing the battery and thus
> > unsoldering at least two points. So I can't go much further for the moment on
> > the hardware side.
> >
> > Until I have a soldering iron again, I'm going to have a look at the firmware
> > files now and try to descramble/disassemble them. I will start with the
> > hypothesis that the CPU is the same than on the original archos since I
> > haven't been able to get that information yet but I don't think I will get
> > anything interesting without knowing the CPU type. Once again, if anyone has
> > more information it will be much faster. If you fear legal assault from
> > Archos, then I can bear all responsability for this "work", all this is
> > perfectly legal in France and probably even under the DMCA if I understand it
> > well.
> >
> > Also, please tell me if I'm off topic and should not post here, I don't want
> > to bother you with this if this is not the place ;)
> >
> > Regards,
> > Laurent
> >
>
>



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