
               QLogic PCI SCSI Adapter - QLA2100
                      ADD Driver of OS/2

                             Version 1.00                Nov. 4, 1997


Release Notes:

	NOTE: DO NOT USE THE 'SELECTABLE BOOT' FEATURE OF THE
	      QLA2100 ROM BIOS TO BOOT OS/2 FROM A DISK ATTACHED
	      TO THE QLA2100.			

This release has been tested with OS/2 Version 2.1, OS/2 Warp
Version 3 & 4 and OS/2 Warp Server.

This document is divided into 6 Sections

   Section 1  OS/2 files on this disk
   Section 2  Installation of OS/2 onto a SCSI disk   
   Section 3  Adding a QLogic Adapter to an existing system
   Section 4  Removable Devices
   Section 5  Command Line Parameters
   Section 6  Troubleshooting

Section 1  OS/2 files on this disk
----------------------------------
 The following files are on this disk for supporting OS/2:

    \OS2\QL21.DDP     	Device driver profile script required for the
                        OS/2 Device Driver Install utility

    \OS2\QL21OS2.ADD	OS/2 ADD driver for QLogic PCI QLA2100 SCSI
                        adapters

    \OS2\README.TXT	This file


Section 2  Installation of OS/2 onto a SCSI disk
------------------------------------------------

 To initially install OS/2 on a SCSI disk attached to the QLogic
 adapter or to install OS/2 from a CD-ROM player attached to the
 QLogic adapter:

  Installing OS/2 Version 2.1:

    1. Make a copy of the IBM OS/2 Diskette 1 (use diskcopy command)
    2. Copy the QL10OS2.ADD file from the \OS2 directory on the QLogic
       driver diskette onto the root directory on the copy of the OS/2
       Diskette 1.
    3. Edit the CONFIG.SYS file located on the copy of OS/2 Diskette 1,
       add the following statement to the end of the file:

       		BASEDEV=QL21OS2.ADD

    4. Start the installation by inserting the IBM OS/2 Installation
       Diskette into drive A and restarting the system, use the
       modified copy of Diskette 1 when prompted to insert Diskette 1. 

  Installing OS/2 Warp Version 3 from CD-ROM:

    1. Make a copy of the IBM OS/2 Warp Diskette 1 (use diskcopy
       command).
    2. To make room for the QLogic driver, delete the following files
       from the copy of Diskette 1:

        For an ISA/EISA (non-Micro Channel) computer, delete:  IBM2*.*
        For a Micro Channel computer, delete:  IBM1*.*

    3. Copy the QL21OS2.ADD file from the \OS2 directory on the QLogic
       driver diskette onto the root directory on the copy of the OS/2
       Diskette 1.
    4. Edit the CONFIG.SYS file located on the copy of OS/2 Diskette 1:
       a. Insert the letters REM before any lines in the CONFIG.SYS
          that refer to the files deleted in step 2 above.
       b. Add the following statement to the end of the file:

       		BASEDEV=QL21OS2.ADD

    5. Start the installation by inserting the IBM OS/2 Installation
       Diskette into drive A and restarting the system, use the
       modified copy of Diskette 1 when prompted to insert Diskette 1. 

  Installing OS/2 Warp Version 3 & 4 and OS/2 Warp Server from diskettes:

    1. Start the installation by inserting the IBM OS/2 Installation
       Diskette into drive A and restarting the system, insert other
       diskettes as requested
    2. During the installation from diskette, select "Advanced
       Installation".
    3. When the System Configuration window is displayed, select the
       CD-ROM Device Support icon and then select the type of CD-ROM
       device to be supported.
    4. After completing the OS/2 installation from diskettes, follow
       the procedure below to install the QLogic ADD driver using the
       Device Driver Install utility.


Section 3  Adding a QLogic Adapter to an existing system
--------------------------------------------------------
 To install the QLogic ADD driver on a previously installed OS/2
 system perform the following steps:

    1. Boot up OS/2 system.
    2. Insert QLogic SCSI driver diskette into drive A (or B).
    3. Select "System Setup" from OS/2 System program group.
    4. Select "Device Driver Install" from the System Setup group.
    5. Change source directory to A:\OS2 (or B:\OS2).
    6. Select "Install"
    7. Select the "QLogic PCI SCSI ADD Driver" followed by
       "OK". The driver will be copied to your boot disk and your
       CONFIG.SYS file will be updated. 
    8. You must reboot your system after installing the driver.


Section 4  Removable Devices
-----------------------------

  OS/2 currently does not support removable SCSI disk devices.  The
  QLogic ADD driver provides limited support for these devices by
  treating them like a fixed disk device.  The disk media must be
  inserted when booting OS/2, and the system must be rebooted when
  changing the disk media.  To enable removable disk support, add the
  /!R parameter to the BASEDEV= command in your CONFIG.SYS file as
  follows:

       		BASEDEV=QL21OS2.ADD /!R


Section 5  Command Line Parameters
----------------------------------

  The following command line parameters are supported by the QLogic
  ADD driver:  (add to end of BASEDEV=QL21OS2.ADD line in config.sys
  file).

  /A:d		Specifies which adapter (0-2) that following command
                line parameters apply to.

  /I		Ignore the specified adapter (must follow "/A:d"
                parameter).

  /DM  /!DM	Enable/disable DASD manager support for specified
                adapter and/or devices (add ":d,d,d" to specify list
                of SCSI IDs or ":(d,d),(d,d),(d,d)" to specify ID,LUN
                pairs).  Default is enabled.

  /SM  /!SM	Enable/disable SCSI manager support for specified
                adapter and/or devices (add ":d,d,d" to specify list
                of SCSI IDs or ":(d,d),(d,d),(d,d)" to specify ID,LUN
                pairs).  Default is enabled.

  /!R		Report removable disk devices to OS/2 as fixed disks.
  		By default removable disks will be reported as
                removable.

  /SR  /!SR	Enable/disable SCSI bus reset during boot on specified
		adapter.  Default is enabled. 

  /ET  /!ET	Enable/disable embedded target support for specified
                adapter. Default is enabled (all 16 LUNs supported).
                Specify /!ET for supporting LUN 0 only.

  /V		Enable verbose mode (display configuration data during
                boot). Default is disabled.

  /RA           Reorder adapters.  This parameter is used to reverse
                the order in which the QLogic adapters are configured.
                This parameter is required on some systems with AMI
                BIOS and more than one QLogic adapter.


Section 6  Troubleshooting
--------------------------

  When doing an initial installation of OS/2 using the QLogic adapter,
  OS/2 mistakenly places the command for loading the QLogic ADD driver
  at the beginning of the CONFIG.SYS file.  This creates a problem if
  your system configuration includes both an IDE fixed disk (boot
  device) and a SCSI fixed disk device.  When booting on the IDE disk,
  the ADD driver for the IDE disk (IBM1S506.ADD) must be loaded before
  the ADD driver for the SCSI disk.  To get around this problem,
  remove the SCSI disk from the system while completing the
  installation onto the IDE disk.  Then, edit CONFIG.SYS file and move
  the command for loading the QLogic driver from the beginning of the
  file to the end of the file.  Finally, reinstall the SCSI disk.
