
   SBCD2.ADD can be used in OS/2 system which  supports  layered
   CD-ROM  device  management structure.  Supported by OS/2 2.1,
   existing OS/2 2.0 users can also access the structure by using
   OS2CDROM.DMD in the OS2CDR package for OS/2 2.0.  To get the
   package, type GO IBMOS2 in Compuserve network.


   INSTALLATION OF SBCD2.ADD, CD-ROM DEVICE DRIVERS
   ------------------------------------------------

   1) If the following line is in your OS/2 CONFIG.SYS file, delete it or
      "REM" it out.
	  
	DEVICE=C:\OS2\CDROM.SYS ...  (where "..." are parameters)

   2) If the OS2CDROM.DMD file is not already in the C:\OS2 directory,
      copy that file from DISK 1 of your OS/2 Ver. 2.1 installation
      diskettes to the C:\OS2 directory.

   3) Copy the SBCD2.ADD file to C:\OS2

   4) Put the following lines in your OS/2 CONFIG.SYS file in the given
      order near the bottom of the OS/2 CONFIG.SYS file.  (Putting these
      lines near the top could cause problems.)  Make sure that none of
      these lines are already in your OS/2 CONFIG.SYS file.  If they are,
      delete them and put them with the lines shown below.

	  BASEDEV=SBCD2.ADD /P:220
	  BASEDEV=OS2CRDOM.DMD
	  IFS=C:\OS2\CDFS.IFS /Q
          DEVICE=C:\OS2\MDOS\VCDROM.SYS (This file is required for DOS Sessions)
          LASTDRIVE=H

      NOTE: A) The last line (LASTDRVIE=H) will problably be different for
	       your system.  For example, if the current last drive of your
	       system is "D: ", your CD-Rom drive will be "E:" and the last
	       line should read: LASTDRIVE=E 
	       This line may be optional.  If you have problems, try eliminating
	       this line and see what happens.

	    B) The first line contains the I/O address of the Sound Blaster
	       card as a parameter (/P:220).  If your I/O address is different
	       (not 220), change the number on the first line to reflect your 
	       setting.  Check "DESCRIPTION OF SBCD2.ADD SWITCHES" at the end
	       of this document for info. on how to set other switches.

   5)  Reboot your system.  The SBCD2.ADD driver should now work.


       
   DRIVER INSTALLATION PROCEDURE IF YOU HAVE NOT INSTALLED OS/2 2.1
   ----------------------------------------------------------------

   1. Copy the SBCD2.ADD CD-ROM driver to the OS/2 2.1 DISK 1 of your
      installation diskettes.

   2) Add the following line to the CONFIG.SYS file contained on
      the OS/2 2.1 DISK 1.  (Put it on the last line of
      the CONFIG.SYS file.)

		BASEDEV=SBCD2.ADD /P:220

   3) Install OS/2 2.1 on your system.  When selecting installation
      options, be sure and install the CD ROM option! When you are
      asked to enter the type of CD-ROM go to the bottom of the list
      and select "OTHER" (OS/2 2.1 does not include the SBCD2.ADD driver
      but there are OTHER CD-ROM support files provided from IBM that
      are required.)

   4) Copy the SBCD2.ADD file to the C:\OS2 directory.

   5) If the OS2CDROM.DMD file is not already in the C:\OS2 directory,
      copy that file from disk 1 of your OS/2 Ver. 2.1 installation
      diskette to the C:\OS2 directory.

   6) If the CDFS.IFS file is not already in the C:\OS2 directory,
      copy that file from disk 1 of your OS/2 Ver. 2.1 installation
      diskette to the C:\OS2 directory.

   7) Make certain the following lines are in the OS/2 CONFIG.SYS
      file on your hard disk in the given order.

		BASEDEV=SBCD2.ADD  /P:220
		IFS=C:\CDFS.IFS  /Q
		BASEDEV=OS2CDROM.DMD
		DEVICE=C:\OS2\MDOS\VCDROM.SYS
		LASTDRIVE=H

      NOTE:  A) The last line (LASTDRIVE=H) will probably be different
		for your system.  For example, if the current last drive
		of your system is "D:", your CD-ROM drive will be "E:"
		and the last line should read: LASTDRIVE=E
		This line may be optional.  If you have problems, try
		eliminating this line and see what happens.

	      B) The first line contains the I/O address of the Sound
		 Blaster card as a parameter (/P:220).  If your
		 I/O address is different (not 220), change the
		 number on the first line to reflect your setting.
		 Check "DESCRIPTION OF SBCD2.ADD SWITCHES" at the
		 end of this document for info. on how to set other
		 switches.

    8) Reboot your system.  The SBCD2.ADD driver should now work.
   

   DESCRIPTION OF SBCD2.ADD SWITCHES
   ---------------------------------

   /P:xxx
   ------
   This switch specifies the port address(in hex) of Sound Blaster card
   used. Options for xxx are 220 and 240.  Default setting for xxx is
   220.

   Example:

	      BASEDEV=SBCD2.ADD /P:220


   /M:xxx
   ------
   This switch specifies the port address(in hex) of MKE CD-ROM interface
   card used.  Options for xxx are 300, 310, 320 and 330.  Default
   setting for xxx is 300.

   Example:

	      BASEDEV=SBCD2.ADD /M:300


   NOTE : /P and /M are mutually exclusive.  If both are specified, the
	  latter one will be effective.  If none is specified, default
	  is Sound Blaster.


   /D:xxx
   ------
   This switch specifies the drives to be run at double transfer speed
   (300KB/s).  The option /D:xxx specifies all daisy chained drives to
   run at double speed.  You can specify individual drive using
   /D:0, /D:1, /D:2, or /D:3 where 0, 1, 2, and 3 are the ID numbers of
   drives you want to run at double speed.  If you have only one drive,
   use the following format:

	BASEDEV=SBCD2.ADD /D:1    (1 is the jumper setting on the drive)

   If you have 2 or more drives, use this format:

	BASEDEV=SBCD2.ADD /D:1,3  (1 and 3 are jumper settings on the drives)


   /N:xxx

   This switch specifies the drives to be run at normal transfer speed
   (150KB/s).  The option /N:xxx specifies all daisy chained drives to
   run at normal speed.  You can specify individual drive using
   /N:0, /N:1, /N:2, or /N:3 where 0, 1, 2, and 3 are the ID numbers of
   drives that you want to run at normal speed.  If you have only one drive,
   use the following format:

	BASEDEV=SBCD2.ADD /N:1    (1 is the jumper setting on the drive)

   If you have 2 or more drives, use this format:

	BASEDEV=SBCD2.ADD /N:0,2  (0 and 2 are jumper settings on the drives)

   NOTE : The default is double transfer speed wherever it is possible.
	  If the same drive has been set more than once, the latest
	  setting will take effect.


		 ********** End of README.TXT **********
