2-3Installing Your AdapterPCI Ethernet and Fast Ethernet Adapters User’s GuideStock Number: 511472-00, Rev. A Page: 2-3Print Spec Number: 496708-00Current Date: 5/5/97 ECN Date: 5/97PCI BIOS SettingsPCI BIOS configuration options vary widely by system. The follow-ing section discusses representative PCI configuration options, butmay not exactly match your computer. (Some computer BIOSs pro-vide no PCI configuration options, but instead automatically config-ure all PCI settings. Your BIOS may not provide the optionsdescribed below). We recommend that you configure all PCI slots inyour system, even those not currently in use, for later convenience.Enter your computer BIOS Setup, and select Advanced Settingsfrom the Main Menu.PCI InterruptsPCI uses an interrupt architecture that maps PCI interrupts to regu-lar ISA interrupts. Some PCI BIOSs will refer directly to the numericISA interrupts (i.e., 10, 11, 12) for PCI slots. Other BIOSs will refer tothe PCI interrupt used by the slot (i.e., INTA, INTB, INTC, INTD).All Adaptec PCI adapters use the PCI interrupt INTA, and the ISAinterrupt to which it is mapped.PCI Slot Enabled Use this setting to enable all PCI slots in yoursystem.Bus Mastering Use this setting to enable PCI bus mastering.PCI INTA Use this setting to assign an ISA interrupt (10, 11,12, etc.) to PCI Interrupt Vector A.PCI INT Vector Use this setting to assign PCI Interrupt Vector A tothe PCI slot(s).PCI Bus Latency Configure this setting to a value between 40 and80.
