SHSUDRVX Version 1.1
                      (c) John H. McCoy, May 1996
                    Sam Houston St. Univ., TX 77341-2206

     SHSUDRVX is a CD driver/controller emulator I have found useful for
     test purposes.  It emulates two 2 CD drives loaded with ISO ROMS.

     Drive 0 has a single text file in the root directory.  This file is
     also listed in the Abstract field of the primary volume descriptor(PVD).
     The file name in the directory entry contains lower case charaters for
     test purpose.  There is also a text string in the BiblioID field for
     test purposes.

     In the root directory of Drive 1 there is a copyright file and a sub-
     directory.  The copyright file is a text file and is listed in the PVD
     copyright ID field.  The HELLO.EXE in the HELLO sub-directory is
     executable.

     SHSUDRVX is loaded from the command line before loading a re-director
     such as SHSUCDX.

     UsageMsg:  SHSUDRVX [/?][/D:DriverName][/U]

        The default driver name is CD001.

     IOCTL input functions supported:
        Return address of Device Header
        Device status
        Return sector size
        Media changed
           reports -- not changed if drive door is closed and locked
                   -- don't know if door closed and unlocked
                   -- changed if door is open

     IOCTL output functions supported:
        Eject disk  -- don't unless you can close it!!!
        Lock/Unlock door
        Reset drive
        Close door

Time permitting, an attempt will be made to fix problems that are reported
  to CSC_JHM@SHSU.EDU.

SHSUCDX is a copyright reserved, free use program.  Use at your own risk.

(c)John H. McCoy, August 1993, 1995, 1996 Sam Houston St. Univ., TX 77341-2206