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PCI Ethernet and Fast Ethernet Adapters
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
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.
PCI Interrupt
Vectors (INTA,
INTB, INTC, INTD)
PCI BIOS
Interrupt
Mapping
ISA/EISA
Numeric Interrupts
(10, 11, 12, etc.)
Interrupt
Controller
PCI Slots ISA/EISA Slots