Digital Equipment PRIORIS MTE, Руководство по техническому обслуживанию

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Digital PRIORIS MTE Server Device Mapping
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Chapter 5 Device Mapping
This section 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.).
The computer's memory and address locations are allocated at the factory to operate within a standard Server
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.
Computer Memory Map
Address Range Function Size
0h to 9FFFFh
Base memory 640 KB
A0000h to BFFFFh Display buffer 128 KB
C0000h to C7FFFh VGA BIOS 32 KB
C8000h to DFFFFh
BIOS Extension ROM
(AT bus usage) 96 KB
E0000h to EFFFFh Reserved 64 KB
F0000h to FFFFFh Computer BIOS 64 KB
100000h to 7FFFFFFh
Extended memory 127 MB