Date   : Thu, 02 Dec 1982 1552-:00PST
From   : Bill Rizzi <RIZZI@Usc-Isib>
Subject: command file drive

       Is it possible to determine from either a system call or the
internals of CP/M the drive from which a command file is read.  That is,
if "A>C:EDIT B:SOMEFILE" is typed, how can EDIT determine that is was
loaded from drive C ???

       Many thanks,
               Bill (RIZZI@ISIB)