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,