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speculatrix
Does anyone know if the palm 802.11b SD card works in a Zaurus?

At the moment it looks as if the only SD wifi card is the C-Guys one?

I would like to use boh bluetooth and wlan at the same time, and am wondering whether which combo would work:
- CF wifi + SD bluetooth
- CF bluetooth + SD wlan

I have a socket CF bluetooth card, and there's a C-GUYS wlan SD card on ebay at the moment. Oy, it's mine, stop bidding tongue.gif

Paul
nilch
I think SD WiFi would imply that SDIO be supported, which the Zaurus doesnt have - right ?
speculatrix
QUOTE(nilch @ Mar 18 2005, 03:02 PM)
I think SD WiFi would imply that SDIO be supported, which the Zaurus doesnt have - right ?
*


well, apparently C-GUYS have an SD card that works in Zaurus, so maybe it's not using SDIO in some way.

from what's been said here, the Z's processor in 860 and 1000 and 3000 are capable of SDIO, but apparently it's not been connected up as far as anyone can tell, and, moreover, there are patent/copyright issues over SDIO anyway.

Paul
stupkid
QUOTE(speculatrix @ Mar 18 2005, 09:39 AM)
the Z's processor in 860 and 1000 and 3000 are capable of SDIO, but apparently it's not been connected up as far as anyone can tell, and, moreover, there are patent/copyright issues over SDIO anyway.
*

You are correct that at least the C760, C860, C1000, and C3000 have SDIO capable hardware, however, SD and SDIO is completely proprietary. You might want to read this:

http://lists.arm.linux.org.uk/pipermail/li...ary/019168.html

Writing a driver is near impossible as each device potentially uses a different encrypted communication method designed by the manufacturer. That's the secure part of Secure Digital. So, it is not as easy as just writing a driver to communicate with the device you have to implement the encryption. Of course all of this closed source. This is also why the Zaurus treats SD cards as MMC and cannot take advantage of the faster bandwidth on new SD cards as that is implemented via proprietary software. In addition to the technical problems there are all sorts of legal concerns about reverse engineering such a protocol.

So, unless the manufacturer wants to release a driver it isn't going to happen.

Hope this helps,

-Bryan
BarryW
QUOTE(stupkid @ Mar 18 2005, 07:36 AM)
So, unless the manufacturer wants to release a driver it isn't going to happen.

Hope this helps,

-Bryan
*



Killjoy! biggrin.gif
speculatrix
QUOTE(stupkid @ Mar 18 2005, 04:36 PM)
You are correct that at least the C760, C860, C1000, and C3000 have SDIO capable hardware, however, SD and SDIO is completely proprietary.  You might want to read this:

http://lists.arm.linux.org.uk/pipermail/li...ary/019168.html

Writing a driver is near impossible as each device potentially uses a different encrypted communication method designed by the manufacturer.  That's the secure part of Secure


thanks for that, I caught a glimpse of a similar page elsewhere.

did you happen to know if the SD lines are connected in the Z, or is it just really an MMC socket?

memory cards surely just use the high speed interface... as all "just work".

that's the wonderful thing about standards - so many to choose from!
stupkid
QUOTE(speculatrix @ Mar 18 2005, 10:59 AM)
did you happen to know if the SD lines are connected in the Z, or is it just really an MMC socket?

The Z's listed in my above post have all the hardware necessary to take advantage of SD and SDIO. The only thing missing is a driver as we have seen from the C-Guys SDIO card.
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