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> 128 Mb Memory Upgrade
guylhem
post Apr 19 2005, 07:18 AM
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Hello

[crossposted to the C3000 forum]

Now I have a better understanding on hardware memory upgrades - good & bad news.

The bad news: the memory stick I opened was a 8 Mb TSOP40 (bad luck - it must be TSOP48 to be hardware compatible. Anyone feel likes opening his 128Mb memory stick and count memory chip pins to check if he/she's more lucky?)

The good news: with the chineese forum pics I could validate my ideas. See the following pics: the samsung chip is k9f2808u0c - google for that and you'll see the size matches the flash, and it is tsop48

http://photos6.flickr.com/7220607_3ed74e94a9_b.jpg
http://photos6.flickr.com/7220663_87696a44e5_b.jpg

Even better- noticed the empty spot below? You can solder a second tsop48 chip. However this may require additional hardware hacks + kernel changes to activate the 2nd bank.

My suggestion to anyone with good soldering skills and a C3000 : purchase a 128 Mb memory stick and (hopefully) find a 128 Mb nand chip inside. Transplant it to your Zaurus. It will be empty, so you will have to go to the diagnostic menu. Then restore a 128 Mb dump from a C1000 - voila, you know have a super 3000. The same should apply to any zaurus also using TSOP 48 chips.

The big question is - will it work (boot, etc.) ? Good question, so I investigated the boot loader from my 6000.

http://externe.net/zaurus/flash/nand/parts/6000L/boot.bin

The bad news: I may or may not do with a tc58100 - the bootloader just doesn't know it. Ie - it may work, but I don't want to take risk (my soldering skills are not that good to risk my zaurus life twice)

The good news: A Toshiba TC58DVG02AFT or a Samsung K9K1G08U0M are recognised by the bootloader (the default chip is TC58512FT or K9F1208U0M on a 6000, ie a 64 Mb/512MB chip)

For a Sl6000, this would require 1) flashing the rescue kernel with a special kernel that will know the flash is a 128 Mb 2) doing a nandbackup, exploding the nandbackup, increasing its size to 128 Mb 3) doing the above mentionned hack, only with a Toshiba TC58DVG02AFT or a Samsung K9K1G08U0M 4) restoring the hacked nandbackup 5) booting in the rescue kernel to reformat the 2nd partition and install an identical 1st kernel

See http://www.externe.net/zaurus/flash/nandmap.jpg for kernel informations.

All this sounds like a cool hack. Now someone please find me the chips (call toshiba USA - http://www.toshiba.com/taec/ I'm in France :-) I'm ready to get a Cxxxx just for the hacking purpose :-)
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guylhem
post May 6 2005, 12:38 PM
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that's the #1 issue - getting the chips. Soldering them could actually be done at my university - there're many hardware labs working on all kind of things.

Guylhem
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guylhem   128 Mb Memory Upgrade   Apr 19 2005, 07:18 AM
adf   will give it a shot this week. One of my disks ...   Apr 19 2005, 07:37 AM
guylhem   512 MB means 64 Mb - that's what's used by...   Apr 19 2005, 08:07 AM
adf   have you looked at pricewatch.com? they have link...   Apr 19 2005, 08:11 AM
guylhem   I tried everything. If you can find them, I'm ...   Apr 19 2005, 10:47 AM
adf   The downside of being in AK. other than big whover...   Apr 19 2005, 12:12 PM
BarryW   QUOTE(adf @ Apr 19 2005, 11:12 AM)The downsid...   Apr 19 2005, 03:42 PM
BarryW   QUOTE(guylhem @ Apr 19 2005, 09:47 AM)I tried...   Apr 19 2005, 03:50 PM
guylhem   Sorry for your ipaq :-( Yes I'm talking about...   Apr 20 2005, 04:30 AM
gab74   i see TH58100FT is the same of TC58DVG02A1FT... so...   Apr 22 2005, 12:00 AM
guylhem   hacking the bootloader is no easy game, especially...   Apr 22 2005, 02:37 AM
technojunkie   Just a suggestion as I was contemplating a RAM upg...   Apr 26 2005, 08:31 AM
guylhem   If you're in the us toshiba sometimes offers s...   Apr 26 2005, 12:23 PM
craigtyson   Erm guys...... As an electronics engineer I have t...   Apr 26 2005, 12:57 PM
zipmaster   any news on this it sounds exciting. the only chip...   May 5 2005, 06:52 PM
guylhem   that's the #1 issue - getting the chips. Solde...   May 6 2005, 12:38 PM
bluedevils   and how many chips does $200 get you?   May 6 2005, 12:43 PM
adf   WARNING!! slightly off-topic Doesn anyone...   May 6 2005, 02:05 PM
albertr   Like I said on the other thread where you posted t...   May 6 2005, 04:14 PM
adf   er.... were you talking to me albert.r ? My quest...   May 6 2005, 05:12 PM
zipmaster   i just searched google for the chip number. there ...   May 6 2005, 08:52 PM
guylhem   albertr, sorry I dind't notice that. I'm i...   May 7 2005, 02:12 AM
speculatrix   any news on this?   Sep 9 2005, 04:55 AM
Da_Blitz   I had a 128MB flash disk with a chip that would ha...   Nov 15 2005, 03:42 PM
louigi600   I saw that someone actually attempted replacing th...   Mar 14 2007, 12:38 PM
HoloVector   QUOTE(louigi600 @ Mar 14 2007, 02:38 PM)I saw...   Mar 14 2007, 12:56 PM
barnarda   QUOTE That was Speculatrix and he bricked his firs...   Jan 28 2008, 02:37 AM
speculatrix   QUOTE(barnarda @ Jan 28 2008, 10:37 AM) B...   Jan 28 2008, 04:00 PM
speculatrix   QUOTE(louigi600 @ Mar 14 2007, 09:38 PM)I saw...   Mar 14 2007, 01:02 PM
ranma   FYI, I was just looking at a C3000 p2rom: The tab...   Jul 5 2009, 08:19 AM
speculatrix   QUOTE(ranma @ Jul 5 2009, 05:19 PM) FYI, ...   Jul 18 2009, 02:38 PM
the_oak   Dremel idea sounds feasible. Hope it works!   Jul 18 2009, 04:06 PM
the_oak   What's happened Spec? Did this work? Is your 6...   Aug 16 2009, 06:43 PM
speculatrix   I've not had time to try, and anyway, I've...   Aug 17 2009, 01:26 AM


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