DEC AlphaServer 2100, Owner'S Manual

Page: 110 / 192

ISA Bus Options
ISA Bus Options
The ISA bus (Industry Standard Architecture bus) is a well
established, industry-standard, 16-bit I/O bus. The EISA bus is
a superset of the ISA bus and has been designed to be backward
compatible with 16-bit and 8-bit architectures. Therefore, ISA
modules can be used in the AlphaServer 2100 system, provided
the operating system supports the device and enough system
resources are available to configure the device.
Up to eight EISA or ISA modules can reside in the EISA bus
portion of the card cage. Figure 3–2 shows the location of ISA
options on the card cage.
To access the card cage, remove the left panel. Refer to
Figure 2–2 and the accompanying text before removing the left
panel. Be sure to reattach the panel screws before attempting to
power up the system again.
3–26 Options and Upgrades