Adaptec 7800 Family Manager for OS/2 2.1X/Warp ============================================= This diskette contains Adaptec's OS/2 solution for the AIC-7800 Family of Host Adapters. This includes: AHA-2910 PCI-to-Fast SCSI (non-bootable) AHA-2940 PCI-to-Fast SCSI AHA-2940W PCI-to-Fast and Wide Single-Ended SCSI AHA-2944W PCI-to-Fast and Wide Differential SCSI AHA-2940Ultra PCI-to-Wide UltraSCSI AHA-3940 MultiChannel PCI-to-Fast SCSI AHA-3940W MultiChannel PCI-to-Fast and Wide SCSI AIC-7850 Single-Chip PCI-to-Fast SCSI AIC-7870 Single-Chip PCI-to-Fast and Wide SCSI AIC-7880 Single-Chip PCI-to-UltraSCSI The folowing files on this diskette are required for the installation of the 7800 Family OS/2 driver: \os2\aic7870.add \os2\7870pres.exe \aic7870.ddp ============================================================================= INSTALLATION INSTRUCTIONS FOR THE OS/2 DRIVER: ============================================================================= 1) Installing a New Driver or Updating an Existing Driver for OS/2 2.1X/Warp ---------------------------------------------------------------------------- a) Open the OS/2 System Folder, then open the System Setup folder. b) Double-click on Device Driver Install. c) Insert the Manager Set floppy in the appropriate drive. d) Change to the directory where the driver is located, usually \OS2_3x. e) When you find the driver (AIC7870.ADD), select INSTALL. f) After the install finishes, a message will appear to report the status. An error will be displayed if no host adapters are found. You may also install the driver manually. Copy AIC7870.ADD to C:\OS2. Add a line to your CONFIG.SYS that says BASEDEV=AIC7870.ADD . 2) First-Time Installation of OS/2 2.1X/Warp From Floppy Diskette ----------------------------------------------------------------- a) Make backup copies of the Installation Diskette and Disk #1. b) Using the backup copies of the Installation Diskette and Disk #1 do the following: 1) Copy OS2LDR from the 7800 Manager Set onto the Installation Diskette. 2) Copy IBMINT13.I13 from the 7800 Manager Set onto Disk #1. c) Install OS/2 using the backup diskettes and the remainder of the standard OS/2 diskettes. d) When installation has completed, reboot the system. e) After the system has rebooted, follow the instructions for installing the driver on a system containing OS/2. 3) First-Time Installation of OS/2 2.1X From CD-ROM --------------------------------------------------- a) Use diskcopy to make backup copies of all IBM OS/2 and Adaptec supplied diskettes. Use the backup copies as your working diskettes. b) Create an OS/2 bootable diskette with the text editor E.EXE. This may be required to modify the OS/2 CONFIG.SYS file during installation. c) Copy the OS2LDR file from the 7800 Family Manager set diskette (i.e., \OS2_3x\OS2LDR) onto the OS/2 installation diskette. This overwrites the existing OS/2 loader on the diskette. d) Copy the IBMINT13.I13 driver from the 7800 Family Manager set diskette (i.e.,\OS2_3x\IBMINT13.I13) onto the OS/2 installation diskette #1. This overwrites any existing version of the driver included on diskette #1. e) Copy the AIC7870.ADD driver from the 7800 Family Manager set diskette (i.e., \OS2_3x\AIC7870.ADD) onto the OS/2 installation diskette #1. This overwrites any existing version of the driver included on diskette #1. f) Modify the CONFIG.SYS file on diskette #1 to include the following line: BASEDEV=AIC7870.ADD /PCIHW g) Run the OS/2 installation program; follow the instructions in your OS/2 documentation. h) At the end of the installation process, follow the onscreen 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, insert the bootable diskette created in step b. Boot the computer from this diskette, and use the 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 as shown in step f. OS/2 should then boot normally from the hard disk. i) 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 onscreen 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 h to correct the problem. 4) First-Time Installation of OS/2 Warp From CD-ROM --------------------------------------------------- Follow the steps a-d above. After reboot, update the AIC7870.ADD on the boot drive from DISK #1 (this file will be overwritten from the CD-ROM). NOTE: The update files OS2LDR and IBMINT13.I13 are no longer needed when installing OS/2 Warp. Additional Notes: ----------------- OS/2 2.1X currently does not identify PCI systems and handles them in the same way it would an ISA system. This can cause several different problems: trouble installing OS/2 2.1X and an inability to share a single interrupt between multiple PCI adapters. IBM is aware of these problems and has open APARs (PJ14230 and PJ14710) tracking them. They will be fixed in a future release of OS/2; please check the list of closed APARs accompanying each future release. Currently, we have files which can be used as interim fixes for both these problems: OS2LDR - A new PCI aware version of the loader. This file can be used during installation or installed after the installation of OS/2 has completed. IBMINT13.I13 - A new PCI aware version of the generic INT 13H driver that is used during installation from floppy disk. If you update Disk #1 of the CD-ROM installation to include OS2LDR, please be aware that this file will be overwritten from the CD-ROM. It may have to be updated again on the boot drive when the installation has completed. The above problems with OS2LDR and IBMINT13.I13 have been fixed in OS/2 Warp. Therefore, the updates are no longer required. This driver added a new switch named /PCIHW which enables the driver to ignore the PCI BIOS and access the PCI hardware registers directly. This switch could be useful for the users having problems loading the AIC7870.ADD included with OS/2 Warp, if their system has a non-compliant system BIOS. 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. For more detailed information see Errata #8512 and 8513. There is currently no support for installing OS/2 2.0 on a hard drive attached to an AIC-7870, due to limitations in the installation procedure. Upgrading to OS/2 2.1 or higher is recommended. ============================================================================= Configuration Information: ============================================================================= Generic Command Line Switches for Adaptec Drivers and OS/2 2.1X and Above ------------------------------------------------------------------------- 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. ***** IMPORTANT ***** Please proceed cautiously with the following information. If you have purchased software which requires you to use switches, it should include instructions on how to use them. Most software requires no switches and you do not need to concern yourself with the information about switch settings. The standard format for command line switches is : 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. (See below, AIC7870.ADD Specific Command Line Switches.) [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 problem. 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). 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. BASEDEV=AIC7870.ADD /A:0 /!DM:3 will prevent OS2DASD.DMD from accessing the target and still allow OS2SCSI.DMD and OS2ASPI.DMD to share access to it. 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. BASEDEV=AIC7870.ADD /ET /A:0 /!SM:4 /A:1 /!DM:1,5 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. Important Tips: --------------- 1) 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. 2) 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. 3) 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! AIC7870.ADD-Specific Command Line Switches ------------------------------------------ This driver supports the AIC-7870 installed on an AHA-2940 PCI host adapter. 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 higest numbers, and the adapters are assigned a number in the order they are found. 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. 16 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=AIC7870.ADD /A:0 /TAG:8 will set the number of tagged commands for all target devices on the first host adapter to 8. ============================================================================== Limitations: ============================================================================== Fault Tolerance is now supported in the driver. However, ABORT and SCSI BUS RESET will only work for targets that are properly behaved.