Adaptec PCI Ethernet and Fast Ethernet Adapters manual Configuring Quartet Adapters

PCI Ethernet and Fast Ethernet Adapters

PCI BIOS

Interrupt

Mapping

PCI Interrupt	ISA/EISA
Vectors (INTA,	Numeric Interrupts
INTB, INTC, INTD)	(10, 11, 12, etc.)

PCI Slots ISA/EISA Slots

Interrupt Controller

Configuring Quartet Adapters

Quartet adapters use the resources of a single adapter to provide four separate Fast Ethernet segments. A Quartet adapter requires a PCI slot with enough room to accept a full length adapter. Follow the instructions above for configuring a single port PCI adapter to install and configure your Quartet.

If you are planning to use the Quartet adapter with Windows NT or Windows 95, please see the discussion of PCI-to-PCI bridge

chips below.

PCI-to-PCI Bridge Chip

Quartets use the DEC® PCI-to-PCI bridge chip to increase the capac- ity of PCI computers by adding an additional PCI bus to the existing motherboard. Some older system BIOSs fail to configure a Quartet adapter properly, because the BIOS does not recognize the PCI-to- PCI bridge chip. Such BIOSs need to be upgraded with a new BIOS from the computer manufacturer before the system can be used with Windows NT or Windows 95.

2-4

PCI Ethernet and Fast Ethernet Adapters User’s Guide

Stock Number: 511472-00, Rev. A	Page: 2-4
Print Spec Number: 496708-00
Current Date: 5/5/97	ECN Date: 5/97