Yeah, physio(), don't you have to call mapin() to lock down the pages first? Anyhow, that seems like the right advice that Lars just gave. -- -Barry Shein Software Tool & Die | {xylogics,uunet}!world!bzs | bzs at world.std.com Purveyors to the Trade | Voice: 617-739-0202 | Login: 617-739-WRLD