Chapter 5–- SCSISelect Configuration Utility 5-215.3 Configuring Multiple SCSI ControllersThe AHA-2940/W/UW SCSI controller isused as an example in the followingdiscussion.To use multiple PCI SCSI controllers, do the following:• Install the boot SCSI controller in the lowest PCI Device number. The Devicenumber is determined by the slot number on the PCI bus.To find out the Device number of the AHA-2940 SCSI controller(s), run theSCSISelect utility (by pressing the key combination Ctrl + A when it isdisplayed onscreen at bootup). Look on the first screen of SCSISelect in theupper right hand corner for Bus:Device xx:xxh (given in hex).If the Device number is high, move the AHA-2940 to a PCI slot at the otherend of the motherboard and rerun SCSISelect to see if the number is lower.This step is a recommended solution formost PCI motherboards. You can also simplyswitch the AHA-2940 SCSI controller intoanother PCI slot if the boot order is not whatis desired.• If you are booting from the AHA-2940 and using ISA/EISA-based hostadapters as secondary devices, you must disable the BIOS on all ISA/EISA-based SCSI controllers.• If you are booting from ISA/EISA-based SCSI controllers and using the AHA-2940 as a secondary device, see your ISA/EISA-based SCSI controllerdocumentation to ensure the SCSI controller is at the lowest BIOS baseaddress. ISA/EISA-based SCSI controllers which have their BIOS enabledboot before the AHA-2940.
