		Frequently Asked Questions about OS/2

This FAQ document is valid for the following LSI Logic. 

Chips
	SYM53C810, SYM53C810A, SYM53C815, 
 	SYM53C825, SYM53C860, SYM53C875, 
 	SYM53C876, SYM53C885, SYM53C895, SYM53C896
Boards
      SYM20810, SYM22801, SYM22802, SYM8600SP, 
	SYM8750SP, SYM8751SP, SYM8751SPE, SYM8751D, 
	SYM8951U, SYM8952U, SYM21002, SYM22910

Many O/S2 installation problems are due to IRQ's not being enabled 
properly.  The subsequent sections will guide the reader through 
common setup steps to enable IRQ's and general OS/2 driver questions.

System CMOS setup hints:

The following section describes setup steps to take with 3 common
System CMOS's.

These are general procedures, since each Mother Board Vendor modifies
the BIOS to configure their Mother Board. To get the best results it is
best to set Network cards to IRQ 9.  This can be done via the software
that comes with the card.  Also set Sound cards to use IRQ 5.  For
detailed instruction for CMOS setups contact the Mother Board
Manufacturer.


Award BIOS

1)	While in the CMOS setup pick the "PCI Configuration Setup" or
      "PnP and PCI Configuration" menu. Change the settings for the
      slot number in which the Symbios Host Bus Adapter (HAB) is
      located if this option is available from "Auto Detect" to "INT
      A" or to an IRQ such as 10, 11, 12 or 15, leaving all other
      slots set to Auto. If there are no Slot options available then
      use the "MANUAL" setting.  This will show all of the IRQ's and
      will list them as either "Legacy ISA" or "NO/ICU" or "PNP/PCI"
      or "Yes/ICU".  What you will do is set all IRQ's below 9 to
      either Legacy ISA or NO/ICU.  IRQ's 10, 11, 12 and 15 will be
      set to PNP/PCI or Yes/ICU.

2)	The "Available IRQ" settings should be modified to 1st = 10,
      2nd = 11, 3rd = 12, and 4th = 15. Ensure that any other device
      in the system (i.e., sound card or LAN card) are not set to the
      same IRQ's as the Symbios Logic HAB. For example, if the LAN
      card is using IRQ 11, remove IRQ 11 as the 1st available IRQ in
      the CMOS setting and shift all of the available IRQ's up one
      level.

3)    Some versions have a statement that will say "PCI IRQ Activated
      by" set this to Level.  Some versions have a statement that will
      say "PCI IDE MAP to" set this to ISA or Absent.

4)	Save the configuration and reboot OS/2.  If you see the 
	OS2CAM.ADD or the SYM8XX.ADD driver initialize the devices and 
	the desk top appears then you system is configured properly.


AMI BIOS

1)	While in the CMOS setup pick the "Chipset" or "Advanced" menu.

2)	Some versions of the CMOS setup allow for the setting of IRQ's
      referenced to the slot location of the Symbios Logic HAB.
      Other versions of the CMOS setup only allow for the IRQ to be
      set to "PCI/ISA" or "Used/Available". In any case, make sure
      that IRQ 9 is set to "Used", "not available", or "ISA".  Keep
      IRQ's 10, 11, and 15 free.

3)	Save the configuration and reboot OS/2.  If you see the 
	OS2CAM.ADD or the SYM8XX.ADD driver initialize the devices and 
	the desk top appears then you system is configured properly.


Phoenix BIOS

If you have the version of the Phoenix BIOS, that only has 2 pages to
the CMOS setup and the only option for the SCSI is to enable or disable
it.  There is not much that can be done other than this.  The system
will do an Auto setting on its own.  There is NO work-around to fix the
problem.  The only solution is to go to another SCSI card.  

***********************************************************************

Most OEM cards that use our chipsets are not "TRUE" plug and play
PCI-SCSI Host Adapters, that is why the manual settings of the IRQ's in
the system is required.

If you have an OEM Host Adapter, then you should contact the OEM first
before contacting LSI Logic.  You can find OEM information at the
following URL.

http://www.lsilogic.com/products/contact.html

***********************************************************************

OEM SCSI HAB's with Symbios chips

All OEM HAB's that have jumpers for the setting of INT A, B, C, D must
be set to INT A.  This is generally pins 1&2.  

LSI Logic sells the controller chips to other vendors. Problems that we
have encountered with specific vendor HAB's are listed below.

All of these old OEM cards, while they may still be compatible to LSI
Logic software, may not be compatible to newer versions of OS/2.  It is
recommended that you upgrade to a PnP style PCI-SCSI card.

MS-3805 HAB:
JP2 comes default as INT A Edge pins 2&3. Change JP2 to INT A Level,
pins 1&2.


GA-410 HAB:
JP3 is a setting for 1st controller and 2nd controller.  The card comes
default as pins 1&2.  Change JP3 to pins 2&3, and the system will
register the IRQ.


SCSI-810P HAB:
J1 comes default as INT B, pins 2&3.  Change J1 to INT A, pins 1&2.


Model P810 HAB: or
PCI-SCSI 21-050020-11 HAB:
This card will not allow an IRQ setting to be enabled for the Symbios
Logic controller (which it needs for proper operation in OS/2).
There is no work around for this card in OS/2.


HSB KW801V10 HAB:
This card will not allow an IRQ setting to be enabled for the Symbios
Logic controller (which it needs for proper operation in OS/2).
There is no work around for this card in OS/2*.

* Note: The HSB card does allow IRQ's to be enabled if the host system
is an Intel P5-66, a FIC P5-66, or a HSB motherboard. We were able to
get the chip to see an IRQ on an old Intel Batman system P/66 and a
P566 FIC Mother Board.  HSB also has informed us that their Mother
Boards also allow for an IRQ setting.

***********************************************************************

If the Symbios PCI-SCSI chip is embedded onto the mother board, then
you need to contact the mother board manufacturer for support on all
issues related to hardware and software.

***********************************************************************

General Questions And Answers


Q:   	I get the error "one or more of your SCSI host adapters is 
    	malfunctioning", what do I do?

A:  	This error is usually caused by an interrupt not being assigned
      to the host bus adapter card. Use the System CMOS setup hints
      to trouble shoot. Also most 486 motherboards and some Pentium
      boards have jumper assignments for the PCI slots. Refer to the
      Mother Boards manual for proper settings. CMOS configuration
      must match the card and Mother Board settings.  Remove the /sm
      and /dm switches.


Q: 	I get the error "Unable to find country.sys" This error happens
      after the OS/2 banner is displayed.

A:  	This error is caused by the system not recognizing the hard
      drive.

      1. Check termination first.  Verify that there is termination
         only at both ends of the SCSI cable.  If you are using
         internal devices on one cable, then termination will be the
         last device on the cable and the card will be terminated.
         If you are using both external and internal devices then
         termination will be the last devices on the external chain,
         and the last device on the internal cable.  The card needs
         to have the termination disabled.  If this is our card then
         termination is disabled automatically.  If this is an OEM
         card then you have to set a jumper or remove the resistor 
	   packs that are located next to the connector.

      2. It may be that the drive does not support synchronous or
         tagged command queuing. Use /!SN or /!Q on the driver.
         Example  BASEDEV=OS2CAM.ADD /V /!SN
             or   BASEDEV=OS2CAM.ADD /V /!Q
	       or   BASEDEV=SYMC8XX.ADD /V /!SN /!Q


Q:	What driver do I load for an NCR Computer that has a built-in
      53C700 SCSI interface?

A:	OS/2 is supported by NCR.  If you are experiencing problems,
      call NCR/AT&T at (800) 774-7406.


Q:	What driver do I load for OS/2 that supports a video card using 
	a 77C22E, 77C22E+, 77C32BLT?

A:	There is no driver available for OS/2 support.  The only option 
	is to get another video card that is supported under OS/2.

***********************************************************************

General Notes


1)	Remove any references to Adaptec controllers in your config.sys
      (*aha.add) of your installation diskettes.  This is for
      versions 2.x and 3.x ONLY.  With OS/2 version 4.x only remove
      aha164x.add, readme.ins and the cdinst.exe.  Also in the
      config.sys set copyfromfloppy=1.  The "Basedev=os2cam.add /v"
      or "Basedev=symc8xx.add /v" should be the last line in
      config.sys.  After install and before shutdown edit the
      config.sys and move the basedev statement to the bottom.

2)	All Symbios Logic PCI-SCSI HAB's must be set to INT A, even if
      there are 2 or more cards being used.

3)	The 53C810 HAB's DO NOT have a BIOS on the card.  They rely on
      the System BIOS for BIOS support.

4)	The Current OS/2 driver can be downloaded from either the BBS
      at (719) 533-7235 or at the Web site (www.lsilogic.com) click
      on the Symbios Driver Info located on the left hand side of the
      page.  Then click on the Download PCI-SCSI Drivers and
      Software.  Go to the bottom of the License Agreement and agree
      the to terms of the software to proceed.  The file name is
      OS2.ZIP.  If you are using just DOS then download the .zip
      package and be sure to have a program such as PKUNZIP to
      extract the files.
	
5)	If you are using a SCSI HAB that has 3 SCSI ports, you can only
      use 2 ports at one time.  If you are using all 3 ports and
      experiencing problems, then you need to remove the devices
      from one of the ports and hook those devices up to another
      controller.

***********************************************************************

LSI Logic Technical Support

If you are still experiencing problems with O/S2, you can contact the
Technical Support Staff by calling us at (719) 533-7230 or fax us at
(719) 533-7271 or go to our web page at:

http://www.lsilogic.com/products/symio_ts.html

and leave us an e-mail.

Hours of operation are 7:00am to 4:00pm MST Monday - Friday.  We are
closed on weekends and holidays. Messages can be left to the Technical
Support at any time by pressing 2 at the start.

