https://www.thinkwiki.org/w/index.php?action=history&feed=atom&title=Talk%3ARicoh_R5C811 2026-05-01T16:18:11Z Revision history for this page on the wiki MediaWiki 1.31.12 https://www.thinkwiki.org/w/index.php?title=Talk:Ricoh_R5C811&diff=22886&oldid=prev 2006-06-24T19:18:13Z

<p>R5C8xx chips, and this page</p> <p><b>New page</b></p><div>=== Errors in this page ===<br /> <br /> Apparently, this page is confusing different chips. It needs to be clarified a bit, and either renamed, or a R5C8xx page made pointing to it.<br /> <br /> The following chips *can* be used in a backwards compatible way in the electronic design (as long as you don't need one of the functions), and Lenovo might just do that depending on supplies:<br /> <br /> R5C8x1: R5C811, R5C821, R5C841 (one slot).<br /> <br /> R5C8x2: R5C812, R5C822, R5C842 (two slots).<br /> <br /> The 81 series is the least capable of them, supporting MMC/SD/SDIO cards and MS/MSPRO memory sticks only.<br /> <br /> The 82 series adds SmartCard support (no idea what that means). <br /> <br /> The 84 series adds ExpressCard (USB-style) and xD picture card support plus two firewire ports. It removes &quot;smartcard support&quot;.<br /> <br /> My T43 2687-DDU shows a 0822 pci subdevice, but I am at a loss on how the ExpressCard was implemented (it should require a R5C84x, or it is tied directly to one of the three PCIe buses in the MCH). <br /> <br /> Probably one cannot really know what Ricoh silcon one has without actually opening the ThinkPad and looking -- whatever shows up on the PCI list depends on which functions are active, and as ExpressCard seems to be implemented the USB way, it might show up as a USB device in the EHCI USB bus when a card is plugged :(</div>

Hmh