On Thu, 01 Jun 2006 15:35:23 CDT, "John Treubig" wrote: >Jeff, > >You bring up a good point in the fact that I believe your refering to >detecting 80 wire vs. 40 wire. We've not tried to use this to our >advantage, but it could have some merrit. What does the driver do if it >encounters a 40 wire cable and the drive says it's capable of DMA5? > The presence of a 40 wire cable limits the device to UDMA2 - 33mhz. See the ATA6 or later on t13.org. JS20 blades are lackinging the strapping to indicate the devices hanging off the amd8111 are on the equivalent of 80 wire - 4 inch trace on mb. In the JS20 case, a quirk will be necessary to run at speeds higher than UDMA2. ++doug - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
