**************************************************************************** 
                                 UNIXWARE.TXT  
***************************************************************************** 

Installation Guide for SDMS UnixWare 7 Driver Version 4.24.00. 

This file describes the features and use of the SDMS Device Driver for the 
SCO UnixWare 7 operating system environment. This driver is referred to as
"C8XX".

Note: Use only driver version 4.24.00 for UnixWare 7. If you need support 
      for UnixWare 2.1.x, use driver version 4.08.00. If you need support 
      for UnixWare 2.0.X, use driver version 3.02.00. Either of these 
      drivers can be obtained from LSI Logic's website located at 
      www.lsilogic.com. 

Introduction
     Features
     Symbios Devices Supported
     Description
How to Install Your SDMS UnixWare Driver
     Installing the C8XX Driver During UnixWare Installation
     Updating UnixWare with the C8XX Driver
Troubleshooting
     


******************************* Introduction ******************************** 

UnixWare 7 extends the Unix SVR4.2 operating system. UnixWare features 
include a graphical user interface (GUI), networking, application
compatibility, multitasking capability, and multi-user capability
Additionally, UnixWare provides multiprocessor support.

The C8XX driver allows SCO UnixWare operating systems to interface with
SCSI devices connected to the Symbios SYM53C8XX and SYM53C1XXX family of
chipsets and/or Symbios 8XX/1XX host adapter cards. Driver 4.24.00 features
support for the Ultra160 SYM53C1010 chipset and the associated host adapter
boards.

The following sections describe the procedures to install the driver during a 
first time installation of UnixWare, and to update a previously installed
UnixWare with this C8XX driver. 


*  *  *  *  *  *  *  *  *  *  *  * Features *  *  *  *  *  *  *  *  *  *  *

The C8XX driver supports these features:

o  Ultra160 Data Transfers (for SYM53C1010)
o  Domain Validation 
o  Parallel Protocol Request (PPR) negotiation to SCSI-3 devices for 
   Ultra160 Double Transition <DT> data transmission
o  Easy installation using UnixWare tools  
o  Wide and synchronous negotiation (including Fast SCSI/Ultra SCSI/  
   Ultra2 SCSI) 
o  Multiple host adapters 
o  Disconnect/Reselect 
o  Multiple and non-contiguous Logical Unit Numbers (LUNs) support 
o  Dynamic interrupt mapping
o  Scatter/Gather 
o  Wide SCSI 
o  SCSI pass-through functionality 
o  Tagged command queuing 
o  Multiprocessor support
o  Target-initiated negotiation
o  NVRAM and NVS Configuration data areas 
o  Termination Control using NVRAM and NVS settings

*  *  *  *  *  *  *  *  *  Symbios Devices Supported  *  *  *  *  *  *  *  *  
  
The C8XX driver supports the following devices and Symbios host adapters
based on those devices:

o  SYM53C810, SYM53C810A, SYM53C810AE (SYM8100S, SYM8100ASP, SYM20810)
o  SYM53C815 (SYM815XS, SYM8150SP)
o  SYM53C825, SYM53C825A (SYM8250S, SYM8251S, SYM8251D, SYM8250ASP, 
   SYM8251ASP, SYM8251AD)
o  SYM53C860, SYM53C860AE (SYM8600SP, SYM20860)
o  SYM53C875, SYM53C875E (SYM8750SP, SYM8751SP, SYM8751SPE, SYM8751D)
o  SYM53C876 (SYM22801, SYM22802)
o  SYM53C885 
o  SYM53C895, (SYM8951U, SYM8952U)
o  SYM53C895A (SYM8953U)
o  SYM53C896 (SYM22910, SYM21002, SYM22902)
o  SYM53C1010 (SYM8955U, SYM21040)

*  *  *  *  *  *  *  *  *  *  *  * Description *  *  *  *  *  *  *  *  *  *

The C8XX driver for SCO UnixWare operating systems is available on a
3.5 inch floppy diskette labeled PCI SCSI SCO UnixWare. Use this diskette to
load the driver during the installation of the operating system, or to
access the devices on the SCSI bus after a UnixWare installation. The 
following sections describe these procedures.

The installation media kit includes a host adapter diskette. This diskette 
also contains a bundled C8XX driver. If you have both a C8XX diskette 
directly from LSI Logic and the host adapter diskette from the media kit, 
use the latest release of the C8XX driver by inserting its diskette first 
when host adapter diskettes are requested during installation.


******************* Installing the SDMS UnixWare C8XX Driver **************** 

This section provides new and existing system installation instructions.

*  *  *  *  *  *  *  *  *  New System Installation *  *  *  *  *  *  *  *  *      


1. Boot the computer using the Install diskettes delivered with the UnixWare 
   Operating System media kit. UnixWare 7 has two diskettes.

2. Follow the instructions on the screen.

3. Insert the PCI SCSI SCO UnixWare driver diskette when prompted to insert a 
   host adapter diskette.

   To install other host adapter drivers, then insert the host adapter diskette
   provided with the UnixWare media kit when requested. If there are no other
   host adapter drivers to install, continue the installation. 

   The system loads the required drivers, such as C8XX, and indicates when 
   they are loaded. At the end of the installation, you will see a prompt to 
   reinsert the HBA driver diskette.

4. Insert the PCI SCSI SCO UnixWare driver diskette and press Enter. 

   The kernel will be built and the installation will terminate.

6. Remove the driver diskette when prompted to do so and reboot the system.


*  *  *  *  *  *  *  *  * Existing System Installation *  *  *  *  *  *  *  *


*   *   * Adding or Updating the C8XX Package *   *   *

Before you install the C8XX driver, make a backup copy of the existing 
kernel:

1. Log on as root.

2. At the shell prompt type:

   cp  /stand/unix  /stand/unix.safe

   Use this copy of the old kernel to reboot the system if the driver 
   installation fails. Refer to the section titled Troubleshooting for 
   more information if necessary.

3. Once the old kernel is saved, insert the PCI SCSI SCO UnixWare driver 
   diskette.

4. Load the driver using the pkgadd command by typing:

        pkgadd -d diskette1

5. Select the C8XX package. 

   The C8XX driver on this diskette is then loaded onto the system.

   The system will again prompt you to load a driver even if loading was 
   successful.

6. Type q (quit) and press Enter.

7. Verify that the driver is now loaded successfully by typing:

        pkginfo c8xx 

8. The package information should look like this:

        system c8xx Symbios IHV HBA

   After the C8XX package is loaded, a message indicating a system reboot
   is necessary may appear.

9. To reboot, type this command:

      init 6    

During the boot process, the driver scans the SCSI bus and lists the devices 
found on it. If the kernel panics during boot, then reboot the system with 
the saved copy of the old kernel. Booting from the saved copy of the kernel 
is described in the next section titled Troubleshooting. If the reboot 
is successful, the system is ready to use.


*  *  *  *  *  *  *  *  *  * Troubleshooting *  *  *  *  *  *  *  *  *  *

*   *   * Problem *   *   *

Driver Installation Fails.

*   *   * Solution *   *   *

To utilize the unix.safe kernel file that was created before installing the
C8XX host adapter driver, follow these steps. 

1. Reboot the system.

2. Wait for the UnixWare 7 Logo screen to appear, then press the 
   space bar to begin an interactive boot session.

3. When the interactive boot prompt appears, type:

     boot unix.safe

   The UnixWare 7 Logo screen will reappear. The system will then boot
   from the UNIX kernel specified above.

