>The one doc I recall as being the most useful was R2_MMC1.pdf >and was originated by SanDisk. I seem to remember lots of Does anyone have the sd spec? (How do sd commands differ from mmc?) Jay -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads