Magnus Damm wrote: > There is no need for any special Flash file system, the Compact Flash itself > keeps > track of things like wear levelling, sector size and command set of the flash > devices.
Just want to point out a common misconception on CF here. While the unit will do wear leveling, you MUST power cycle it for that to happen. Each power cycle pretty much locks down the sectors it is using. Bizarre I agree, but you will burn out a CF disk very quickly if you do not constantly power cycle it. (We had a customer experience that exact problem with the CF vendor's response being "ohh you didn't know that?".) CF disks are great for read-only, occasional writes, and "consumer devices".. but are terrible for anything that you would expect long uptimes and moderate writing. (In this situation, the little IBM CF hard drive seems to work pretty good, but I don't have any long term experience with failure/success on one of those.) > The exported interface for a Compact Flash is just like any ATA Flash and > under > Linux the standard IDE driver is normally used. The CF needs to be mapped into > some address space however, and this setup is usually taken care of by the > PCMCIA > layer or the firmware/bootloader of your specific board. --Mark ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
