Adaptec Family Manager Set

Adaptec 7800 Family Manager Set v3.03

README for IBM OS/2

The following information is available in this README file:

Installing a New Driver or Updating an Existing Driver for OS/2 2.1X/Warp/Server
First-Time Installation of OS/2 2.1X/Warp/Server From Floppy Diskette
First-Time Installation of OS/2 2.1X From CD-ROM
First-Time Installation of OS/2 Warp 3.x, 4.0 or 4.0 Server From CD-ROM

Known Issues

Command Line Options

Universal parameters
General Unit Parameters
Special Unit Parameters

Diskette Contents

Contacting Adaptec

Supported Hardware

The following Adaptec SCSI Host Adapters are supported by the 7800 FMS v3.03. The first list (Fast/Ultra Adapters) is supported by the AIC78xx.MPD driver, while the second list (Ultra2 Adapters) is supported by the AIC78U2.MPD driver.

Fast/Ultra Adapters Description

AHA-2910C	PCI-to-Fast SCSI (non-bootable)
AHA-2915C	PCI-to-Fast SCSI (non-bootable)
AHA-2920C	PCI-to-Fast SCSI
AHA-2930C	PCI-to-Ultra Single-ended SCSI
AHA-2940	PCI-to-Fast SCSI
AHA-2940W	PCI-to-Fast and Wide Single-ended SCSI
AHA-2940AU	PCI-to-Ultra Single-ended SCSI
AHA-2940U	PCI-to-Ultra Single-ended SCSI
AHA-2940U Dual	DualChannel PCI-to-Ultra Wide Internal Single-ended SCSI with 50-pin external connector
AHA-2940UW	PCI-to-Ultra Wide Single-ended SCSI
AHA-2940UW Pro	PCI-to-Ultra Wide Single-ended SCSI
AHA-2940UW Dual	DualChannel PCI-to-Ultra Wide Single-ended SCSI with 68-pin external connector
AHA-2944W	PCI-to-Fast and Wide Differential SCSI
AHA-2944UW	PCI-to-Ultra Wide Differential SCSI
AHA-3940	MultiChannel PCI-to-Fast SCSI
AHA-3940W	MultiChannel PCI-to-Fast and Wide SCSI
AHA-3940U	MultiChannel PCI-to-Ultra SCSI
AHA-3940UW	MultiChannel PCI-to-Ultra Wide SCSI
AHA-3940UWD	MultiChannel PCI-to-Ultra Wide SCSI with dual external VHD connectors
AHA-3944UWD	MultiChannel PCI-to-Ultra Wide Differential SCSI with dual external VHD connectors
AHA-3940AU	MultiChannel PCI-to-Ultra SCSI
AHA-3940AUW	MultiChannel PCI-to-Ultra Wide SCSI
AHA-3940AUWD	MultiChannel PCI-to-Ultra Wide SCSI with dual VHD external connectors
AHA-3944AUWD	MultiChannel PCI-to-Ultra Wide Differential SCSI with dual external VHD connectors
AHA-4944W	Quad Channel PCI-to-Fast and Wide Differential SCSI
AHA-4944UW	Quad Channel PCI-to-Ultra Wide Differential SCSI

APA-1480	CardBus-to-Ultra Single-ended SCSI

AIC-7850	Single-chip PCI-to-Fast SCSI
AIC-7855	Single-chip PCI-to-Fast SCSI
AIC-7856	Single-chip PCI-to-Fast SCSI
AIC-7860	Single-chip PCI-to-Ultra SCSI
AIC-7870	Single-chip PCI-to-Fast and Wide SCSI
AIC-7880	Single-chip PCI-to-Ultra Wide SCSI
AIC-7895	Single-chip PCI-to-MultiChannel Ultra Wide SCSI

Ultra2 Adapters Description

AHA-2940U2 OEM	PCI-to-Ultra2 Wide LVD/Single-ended SCSI
AHA-2940U2B	PCI-to-Ultra2 Wide LVD SCSI
AHA-2940U2W	PCI-to-Ultra2 Wide LVD/Single-ended SCSI
AHA-2950U2B	64-bit PCI-to-Ultra2 Wide LVD SCSI
AHA-3950U2B	64-bit PCI-to-MultiChannel Ultra2 Wide LVD SCSI
AHA-3950U2D	64-bit PCI-to-MultiChannel Ultra2 Wide LVD SCSI with dual external VHD connectors

AIC-7890	Single-chip PCI-to-Ultra2 SCSI
AIC-7891	Single-chip 64-bit PCI-to-Ultra2 SCSI
AIC-7896	Single-chip PCI-to-MultiChannel Ultra2 SCSI
AIC-7897	Single-chip 64-bit PCI-to-MultiChannel Ultra2 SCSI

Changes From Prior Release

This release of the Adaptec 7800 Family Manager Set v3.03 adds the following support from the previous v3.02 release:

· Support for PC99 Windows Hardware Quality Labs Certification

· Updated OS/2 drivers

Installation Instructions

The AIC78U2.ADD Ultra2SCSI driver only supports OS/2 Warp 3.x, 4.0 and 4.0 Server. The AIC7870.ADD UltraSCSI or earlier driver also supports OS/2 version 2.1x in addition to versions 3.x, 4.0 and 4.0 Server.

Installing a New Driver or Updating an Existing Driver for OS/2 2.1X/Warp/Server

NOTE: When installing a new host adapter, make sure it is inserted in the system before installing the driver.

1. Open the OS/2 System Folder, then open the System Setup folder.

2. If running OS/2 Warp 4.0, open the Install/Remove Folder.

3. Double-click on Device Driver Install.

4. Insert the Adaptec 7800 Family Manager Set v3.03 floppy in the appropriate drive.

5. Change to the directory where the driver is located.

a. For Ultra2SCSI host adapters, the driver will be located in \OS2\AIC78U2 (for OS/2 Warp or Server only)
b. For UltraSCSI or earlier host adapters, the driver will be located in \OS2\AIC7870

6a. For Ultra2SCSI host adapters, when you find the driver (AIC78U2.ADD), select INSTALL.

6b. For UltraSCSI or earlier host adapters, when you find the driver (AIC7870.ADD), select INSTALL.

7. After the installation finishes, be sure to check the C:\ directory and delete any previous versions of the AIC78U2.ADD and/or AIC7870.ADD drivers before rebooting the system. If you do not remove those drivers, OS/2 will load them instead of the new drivers that you have just installed.

8. Select EXIT and reboot the computer.

NOTE: You may also install the driver manually:

1. For Ultra2SCSI host adapters: Copy AIC78U2.ADD to C:\OS2\BOOT. Add a line to your CONFIG.SYS that says BASEDEV=AIC78U2.ADD /V.

2. For UltraSCSI or earlier host adapters: Copy AIC7870.ADD to C:\OS2\BOOT. Add a line to your config.sys that says BASEDEV=AIC7870.ADD /V.

First-Time Installation of OS/2 2.1X/Warp/Server From Floppy Diskette

NOTE: To install the driver, it is necessary to copy the driver from the Adaptec 7800 Family Manager Set v3.03 diskette for OS/2 on to the OS/2 Diskette 1. However, before you can copy the driver, you must first remove various files from the OS/2 Diskette 1, as explained in step 2 below.

1. Make backup copies of the Installation Diskette and Diskette 1.

2. Delete some of the existing files on the backup copy of the OS/2 Diskette 1 so that approximately 140 KB of disk space is available on the diskette. Use the following information to help you decide which files to delete.

a. If the Adaptec 7800 Family host adapter is the only Adaptec host adapter installed in your system, delete all other Adaptec drivers (aha152x.add, aha154x.add, aha164x.add, aha174x.add, aic7770.add, aic7870.add, and fd16-700.add).

b. If you have an Adaptec host adapter that is not part of the 7800 Family, delete all of the Adaptec drivers not used by that particular host adapter. For example, if you have an Adaptec AHA-1540CP host adapter installed in your computer, delete all Adaptec drivers except for the aha154x.add driver.

c. If you have deleted the suggested Adaptec drivers above, and you still do not have approximately 140 KB of disk space available on the diskette, delete the file: CDINST.EXE (for OS/2 Warp or Server only).

3. If you are installing OS/2 2.1X, use the backup copies of the Installation Diskette and Diskette 1 to do the following:

a. Copy OS2LDR from the Adaptec 7800 Family Manager Set v3.03 diskette onto the OS/2 Installation Diskette.

b. Copy IBMINT13.I13 from the Adaptec 7800 Family Manager Set v3.03 diskette onto the OS/2 Diskette 1.

NOTE: You do not need these files when installing OS/2 Warp or Server.

4. Add the following lines to the config.sys file on OS/2 Diskette 1:

a. For Ultra2SCSI host adapters:

BASEDEV=AIC78U2.ADD
Set CopyFromFloppy=1

b. For UltraSCSI or earlier host adapters:

BASEDEV=AIC7870.ADD
Set CopyFromFloppy=1

5. Install OS/2 using the backup diskettes and the remainder of the standard OS/2 diskettes.

6. When installation has completed, reboot the system.

First-Time Installation of OS/2 2.1X From CD-ROM

Only the AIC7870.ADD driver is supported under OS/2 2.1X . The Ultra2SCSI AIC78U2.ADD driver is not supported under OS/2 2.1X.

NOTE: To install the AIC7870.ADD driver, it is necessary to copy the driver from the Adaptec 7800 Family Manager Set v3.03 diskette for OS/2 on to the OS/2 Diskette 1. However, before you can copy the driver, you must first remove various files from the OS/2 Diskette 1, as explained in step 2 below.

1. Use diskcopy to make backup copies of all IBM OS/2 and Adaptec supplied diskettes. Use the backup copies as your working diskettes.

3. Copy the OS2LDR file from the Adaptec 7800 Family Manager Set v3.03 diskette (i.e., \OS2\AIC7870\OS2LDR) onto the OS/2 installation diskette. This overwrites the existing OS/2 loader on the diskette.

4. Copy the IBMINT13.I13 driver from the Adaptec 7800 Family Manager Set v3.03 diskette (i.e.,\OS2\AIC7870\IBMINT13.I13) onto the OS/2 Diskette 1. This overwrites any existing version of the driver included on Diskette 1.

5. Copy the AIC7870.ADD driver from the Adaptec 7800 Family Manager Set v3.03 diskette (i.e., \OS2\AIC7870\AIC7870.ADD) onto the OS/2 Diskette 1. This overwrites any existing version of the driver included on Diskette 1.

6. Modify the CONFIG.SYS file on Diskette 1 to include the following line:

BASEDEV=AIC7870.ADD

7. Run the OS/2 installation program; follow the instructions in your OS/2 documentation.

8. At the end of the installation process, follow the on screen instructions to remove the last OS/2 distribution diskette and reboot the computer. If the computer fails to boot up, and locks up while displaying the OS/2 logo screen, you may use one of the following options to get to the command prompt:

a. If you installed OS/2 using the FAT Filesystem, boot up MS-DOS to get to the command prompt.

b. If you installed OS/2 using the HPFS Filesystem, insert the Installation Diskette and boot up the computer from this diskette. When the IBM screen is displayed, remove the Installation diskette and insert Diskette 1 as instructed to do so. After a while, a screen will be displayed asking which installation method you wish to choose. At this point, press the F3 key to get to the command prompt.

Once you get to the command prompt, change to the drive where the OS/2 system files are located (usually Drive C:). You may now use a text editor to again modify the OS/2 CONFIG.SYS file on the hard drive to add the /!PCIHW switch to the BASEDEV=AIC7870.ADD line. OS/2 should then boot normally from the hard disk.

9. After the computer has restarted, OS/2 displays a screen. You have the option to view online information while the OS/2 desktop is building. Allow OS/2 to finish building, and follow the on screen instructions to restart the computer. Again, if the computer fails to boot up, and locks up while displaying the OS/2 logo screen, repeat the process specified in step 8 to correct the problem.

NOTE: The CONFIG.SYS, IBMINT13.I13, and OS2LDR files may be overwritten by equivalent files from the CD-ROM. If this occurs, follow step 8 above to recover those files.

First-Time Installation of OS/2 Warp 3.x, 4.0 or 4.0 Server From CD-ROM

1. Type CDINST from CD-ROM drive to create the boot diskettes from OS/2 CD.

2. Delete some of the existing files on the OS/2 Diskette 1 so that approximately 140 KB of disk space is available on the diskette. Use the following information to help you decide which files to delete.

NOTE: If you are installing the Ultra2SCSI host adapter, delete the AIC7870.add driver as well.

c. If you have deleted the suggested Adaptec drivers above, and you still do not have approximately 140 KB of disk space available on the diskette, delete the file: CDINST.EXE.

***************************************************************
NOTE: The following files MUST NOT BE DELETED from Diskette 1:
          CLOCK01.SYS
          CLOCK02.SYS
          IBM1S506.ADD
          IBM1FLPY.ADD
          IBM2FLPY.ADD
          IBM2ADSK.ADD
          IBM2SCSI.ADD
          IBMINT13.I13
          IBMKBD.SYS
          KBDBASE.SYS
          OS2LOGO
          OS2DASD.DMD
          PNP.SYS
          RESERVE.SYS
          RESOURCE.SYS
          SCREEN01.SYS
          SCREEN02.SYS
          XDFLOPPY.FLT
          *.SNP   (all files with the extension of SNP)
****************************************************************

3. Copy the driver from the Adaptec 7800 Family Manager Set diskette for OS/2 onto the OS/2 Diskette 1.

a. For Ultra2SCSI host adapters, the driver (AIC78U2.ADD) will be located in \OS2\AIC78U2 directory.
b. For UltraSCSI or earlier host adapters, the driver (AIC7870.ADD) will be located in \OS2\AIC7870 directory.

4. For each driver removed from the OS/2 Diskette 1, remove its corresponding line in the config.sys file (also on OS/2 Diskette 1). For example, if you deleted all Adaptec drivers, as explained in step 2a, above, remove the following lines from config.sys:

        rem basedev=aha152x.add
        rem basedev=aha154x.add
        rem basedev=aha164x.add
        rem basedev=aha174x.add
        rem basedev=aic7770.add
        rem basedev=fd16-700.add

NOTE: If you are installing the Ultra2SCSI host adapter, then remove the basedev=aic7870.add statement as well.

5. In the config.sys file on OS/2 Diskette 1, add the line "set copyfromfloppy=1". This line should be added so that the install process copies the AIC78U2.ADD or AIC7870.ADD driver from the OS/2 Diskette 1, rather than the driver included on the OS/2 CD-ROM.

a. For Ultra2SCSI host adapters, Add "BASEDEV=aic78U2.add" to the top line of config.sys on OS/2 Diskette 1. This may result in two "BASEDEV=aic78U2.add" statements in the config.sys file.
b. For UltraSCSI or earlier host adapters, add "BASEDEV=aic7870.add" to the top line of config.sys on OS/2 Diskette 1. This will result in two "BASEDEV=aic7870.add" statements in the config.sys file.

6. Run the OS/2 installation program; follow the instructions in your OS/2 documentation, until you reach the System Configuration window.

7. In the System Configuration window, click the SCSI Adapter Support icon.

8. Deselect any highlighted adapters (including the Adaptec 294x, 394x, AIC7870 PCI SCSI), and click OK. The text box for SCSI Adapter Support should say "None".

NOTE: If these adapters are not deselected, the driver included on the CD-ROM will be copied over the driver being installed.

9. Follow the instructions in your OS/2 documentation to complete the installation.

NOTE: After installation is complete, verify that only one "BASEDEV=aic78U2.add" or "BASEDEV=aic7870.add" statement exists in your config.sys file on your hard drive. Remove other instances if more than one is found.

NOTE: There is also another procedure posted on the IBM web site that does not require the "SET COPYFROMFLOPPY=1" flag in CONFIG.SYS. This procedure can be found on http://service.software.ibm.com/os2ddpak/html/. (Go to this URL, select OS/2 Component Updates, then Installation Diskette Updates, then Adaptec 7870 Hardfile Controller Support)

Known Issues

This version of the Adaptec 7800 Family Manager Set v3.03 driver added a new switch named /!PCIHW which enables the driver to skip accessing the PCI hardware registers directly, and use PCI BIOS instead. This switch could be useful for users having problems loading the driver included with OS/2 Warp or Server. Modify the CONFIG.SYS file to include the following line:

a. For Ultra2SCSI host adapters: BASEDEV=AIC78U2.ADD /!PCIHW
b. For UltraSCSI or earlier host adapters: BASEDEV=AIC7870.ADD /!PCIHW

Intel Errata #8511 lists known data integrity issues with the processor cache on the Saturn-1 chipset (82424TX). For this reason, Adaptec recommends that processor cache be disabled via the CMOS setup to avoid data corruption. For more information, see Intel Errata #8511. You may get this from Intel's FaxBack system at 800.628.2283 or 916.356.3105.

There are installation problems when installing on the maximum hard disk drive partition size supported by OS/2 v3.0. On OS/2 v3.0 it is a known problem. Refer to IBM for further info. IBM's APARs PJ15988 and PJ 6151 deal with this issue.

There are known installation problems installing OS/2 Warp v4.0 on a Micron (LSI chipset) 64 bit PCI system.

There are known installation problems installing OS/2 Warp with 8MB of RAM unless all the third-party basedev statements are removed from config.sys.

There are known installation problems installing OS/2 using two SCSI host adapters on Marl mother board.

Whenever you have a LVD HDD on one Ultra2SCSI host adapter and a HDD, CD-ROM, and removable Syjet on another UltraSCSI host adapter, Syjet conflicts with the CD-ROM and the system is unable to access the CD-ROM.

Additional Notes

This version of the Adaptec 7800 Family Manager Set v3.03 driver supports the AIC-7800 Family of Host Adapters. Adapter numbers are first assigned to boards with their BIOS enabled. The numbers are assigned from lowest BIOS address to highest address. Any remaining boards are assigned numbers by scanning slots. Each slot is a combination of a bus number and a device number pair starting from lowest to highest numbers, and the adapters are assigned a number in the order they are found.

Example: Bus 0, device 0 assigned as adapter 0; Bus 1, device 1 assigned as adapter 1, etc.

On some PCI systems, users may sometimes have problems loading the driver when the host adapter board is seated in a particular slot. Moving the host adapter board to another slot may solve the problem. If the problem still persists, it may be occurring because the Adaptec 7800 Family Manager Set v3.03 driver is unable to access the PCI hardware registers directly. To overcome this, users should use the /!PCIHW switch. Modify the CONFIG.SYS file to include the following line:

a. For Ultra2SCSI host adapters: BASEDEV=AIC78U2.ADD /!PCIHW
b. For UltraSCSI or earlier host adapters: BASEDEV=AIC7870.ADD /!PCIHW

There are no switches for controlling OS2ASPI.DMD directly. IBM did not define them in their specification and we cannot be sure that other host adapters will have the same switches.

OS2SCSI.DMD will only allocate devices when a device driver requests it, but this will prevent OS2ASPI from accessing it. There is nothing in the ASPI specification regarding device allocation so OS2ASPI must rely on other managers to fairly share targets. This should only be a problem if you have two drivers that use different managers and you want them both to access the same target at the same time.

Do NOT disable DASD manager access to target 0 if you are booting from your SCSI host adapter. This will prevent the system from booting!

Fault Tolerance is supported in the driver. However, ABORT and SCSI BUS RESET will only work for targets that are properly behaved.

IBM does not support installing the operating system onto magneto optical devices. Additionally, OPTICAL.SYS (OS/2 V3.0) or OPTICAL.DMD (OS/2 V4.0) allows magneto optical devices to be supported as though they were large floppy devices. LOCKDRV.FLT allows removable media such as MO's to be supported as though they were fixed hard drives.

It is not possible to install OS/2 3.0 on drives with capacity greater than 8 GB, nor in a partition greater than 4 GB. The following is the suggestion from IBM on this problem:

Problems with large partitions and installation or booting: There is a BIOS restriction that installable (startable) or bootable partitions must be contained within the first 1024 physical cylinders of the disk. FDISK does not enforce this limitation. If you have installation or boot failures this could be the reason. Use FDISK to reduce the size of your startable or bootable partition by sufficient MBytes. One way to calculate the correct size partitions to do the following:

1. Edit your CONFIG.SYS and add the following parameter to the BASEDEV=IBM1S506.ADD line as below:
BASEDEV=IBM1S506.ADD /V

2. Save this change.

3. Reboot your system.

4. At initialization, record the far left hand column of number of the Geometry information under the ACT heading. Example: ACT Cyl 1027 Head 63 Sec 128 (head x sec) /2 = bootable partition must be contained within this boundary in MBytes (round down). This is the maximum size of a bootable partition in MBytes. Any bootable partition must also be contained from the beginning of the drive to this number of MBytes. A bootable partition may be smaller than the maximum size but still must be contained within this boundary. In this example the bootable partition must be contained in the first 4032 MBbytes of the disk and cannot exceed a single partition size of 4032 MBytes within this area. No bootable partition may extend beyond the first 4032 MBytes.

Use this information when configuring your bootable partition with FDISK.

OS/2 will allocate the SCSI devices as the order in CONFIG.SYS if two drivers (AIC7870.ADD and AIC78U2.ADD) are loaded.

OS/2 will assign drive letters for SCSI devices first then IDE devices.

Command Line Options

OS/2 adapter device drivers (.ADD files) are normally installed automatically and require no further information from the user. However, in certain situations the user may wish to modify the behavior of the driver to meet their specific needs.

NOTE: Please proceed cautiously with the following information.

The standard format for command line switches is :

a. For Ultra2SCSI host adapter: BASEDEV=AIC78U2.ADD [Universal Parameter][Adapter ID][Unit Parameter]{[SCSI Target ID]}
b. For UltraSCSI or earlier host adapters: BASEDEV=AIC7870.ADD [Universal Parameter][Adapter ID][Unit Parameter]{[SCSI Target ID]}

[Universal Parameter] - An option that applies to all adapters
controlled by the driver.

[Adapter ID] - /A:n, where n is the number (zero relative) of the adapter installed in the system. The adapter ID is determined when the driver is loaded based on the order that adapters are found in the system. (Refer to the Configuration Examples in the "General Unit Parameters" section below for information on how to use this option.)

[Unit Parameter] - Modifies the behavior of the selected host adapter.

[SCSI Target ID] - The targets to which the Unit Parameter will be applied. This parameter may be a single ID (d) or list of IDs (d,d,d).

Universal Parameters

/ET -- Allow embedded targets. This parameter indicates that the ADD should assume that all targets have more than one logical unit (LUN) defined.

/!ET -- Do not allow embedded targets (DEFAULT). This parameter indicates
that the ADD should assume that all targets have only one logical
unit (LUN) defined.

/V -- Load driver verbosely. This parameter will display the driver name as well as the version number and Adaptec copyright if the driver loads successfully. Information on all targets found in the system will also be displayed.

/PCIHW -- Enables driver to access PCI configuration hardware registers. This switch is implemented because in some PCI systems, accessing PCI configuration space through PCI BIOS function calls causes problems. This switch is enabled by default.

/!PCIHW -- Disables the PCIHW switch. This parameter will cause the driver to access the PCI configuration space through PCI BIOS function calls.

General Unit Parameters

/I -- Ignore the specified adapter. This allows another driver to share the adapters that the ADD would normally use.

/DM -- Enable DASD manager support (DEFAULT). This parameter allows OS2DASD.DMD to control the specified target(s) if they are identified as DASD (hard disk) devices.

/!DM -- Disable DASD manager support. This parameter prevents OS2DASD.DMD from controlling the specified target(s).

/SM -- Enable SCSI manager support (DEFAULT). This parameter allows OS2SCSI.DMD to control the specified target(s) if they are identified as NON-DASD SCSI devices. All SCSI hard drives will be controlled by OS2DASD.DMD.

/!SM -- Disable SCSI manager support. This parameter prevents OS2SCSI.DMD from controlling the specified target(s).

/TAG -- Specifies the maximum number of tagged commands for all target devices on the host adapter (1-16). A value of 1 disables tagged queuing. The maximum number allowed is 16. (The default is 8.)

/UR -- Enables reporting of under runs (DEFAULT).

/!UR -- Disables reporting of under runs.

Configuration Examples:

Example 1:

Suppose that you had a removable hard drive as target 3 and you wanted to control the hard drive with an ASPI application and driver. Normally OS2DASD will allocate this device, treat it as a large floppy and prevent you from sending any SCSI commands via ASPI.

The following command line will prevent OS2DASD.DMD from accessing the target and still allow OS2SCSI.DMD and OS2ASPI.DMD to share access to it.

BASEDEV=AIC78U2.ADD /A:0 /!DM:3

Example 2:

Suppose that you had a multi-disk CD-ROM as target 4 on host adapter 0 and two DASD devices as targets 1 and 5 on host adapter 1.

The following command line will prevent OS2SCSI.DMD from accessing the CD-ROM and prevent OS2DASD.DMD from controlling the DASD devices. The driver will also search for multiple LUNs on all host adapters.

BASEDEV=AIC7870.ADD /ET /A:0 /!SM:4 /A:1 /!DM:1,5

Special Unit Parameters:

/TAG: -- Sets the number (1-16) of tagged commands for all target devices on the host adapter. A value of one disables tagged queuing. Sixteen is the maximum number allowed and 8 is the default value.

/TAG:1 -- Disables tagged queuing for all target devices on a given host adapter. The driver maintains a maximum of 2 non-tagged commands per target internally. The driver treats all target devices as non-tagged devices, and sends only one command at a time per target to the host adapter.

Example:

BASEDEV=AIC78U2.ADD /A:0 /TAG:8 will set the number of tagged commands for all target devices on the first host adapter to 8.

Diskette Contents

The following files are included in this diskette:

\OS2\README.TXT	Readme file for OS/2
\OS2\README.HTM	HTML version of README.TXT (this file)

For Ultra2SCSI host adapters:

\OS2\AIC78U2\AIC78U2.ADD	The Adaptec Ultra2SCSI driver for the 7800 Family Manager Set
\OS2\AIC78U2\AIC78U2.DDP	Install script used by the OS/2 Install utility
\OS2\AIC78U2\78U2PRES.EXE	Adapter Presence Check program used by the Install script

For UltraSCSI or earlier host adapters:

\OS2\AIC7870\AIC7870.ADD	The UltraSCSI Adaptec driver for the 7800 Family Manager Set
\OS2\AIC7870\AIC7870.DDP	Install script used by the OS/2 Install utility
\OS2\AIC7870\7870PRES.EXE	Adapter Presence Check program used by the Install script
\OS2\AIC7870\IBMINT13.I13	Used for a first time install of OS/2 2.1x
\OS2\AIC7870\OS2LDR	Used for a first time install of OS/2 2.1x

Contacting Adaptec

Technical information, including product literature, answers to commonly asked questions; information on software upgrades, and other topics is available electronically through the following:

· Search the Adaptec World Wide Web at www.adaptec.com

· Connect to the File Transfer Protocol (FTP) server at ftp.adaptec.com/pub/BBS/

· Search the Adaptec Support Knowledgebase (A.S.K.) at http://ask.adaptec.com for articles, troubleshooting tips, and frequently asked questions for your product.

· Access Adaptec’s Interactive Fax at 303-684-3400, this is available 23 hours a day 7 days a week. The fax system is out of service for 1 hour each day.

· For Internet support, send technical questions to Adaptec’s Technical Support Specialists via WebMail at http://www.adaptec.com/support/webmail.html .

· For more information about Adaptec’s electronic support options, call 800-959-7274 or 408-945-2550, 24 hours a day, 7 days a week.

· To speak with a Technical Support Specialist, call 408-934-7274, Monday–Friday, 6:00 A.M. to 5:00 P.M., Pacific Time.

After hours, on weekends, and on holidays, product support is available