Digital Equipment Celebris FX, Service Maintenance Manual

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6
Device Mapping
6
Introduction
This chapter provides a series of tables listing mapping and address information
related to computer memory and various main logic board devices (keyboard
controller, interrupt controller, DMA controller, etc.).
Your computer's memory and address locations are allocated at the factory to operate
within a standard PC environment. However, due to the number of optional devices
and/or expansion boards that are available, sometimes memory and address
locations need to be changed. For example, some network expansion boards require
a specific memory location. If that location is already allocated, a memory conflict
results and the expansion board will not operate as expected. Note that some
memory, I/O and interrupt locations can be changed using the BIOS Setup utility.
CAUTION:
Before changing any memory or address location,
refer to the documentation supplied with the optional device,
expansion board, or software application and make sure
adequate information is available. If not, contact the option or
software manufacturer for further information.