Chapter 3: Setup
3-9
Memory Map (Pentium)
The
following
table
details
the
memory
map
for
the
Pentium
processor.
The
ESCD
area
from
ED000
‐
EDFFF
is
not
available
for
use
as
an
Upper
Memory
Block
(UMB)
by
memory
managers.
The
area
from
E0000
‐
EBFFF
is
currently
not
used
by
the
BIOS
and
is
available
for
use
as
UMB
by
memory
managers.
Parts
of
this
area
may
be
used
by
future
versions
of
the
BIOS
to
add
increased
functionality.
Address Range (hex)
Size
Description
FECFF000
‐
FECFF01B
27
LAN
PXE
ROM
100000
‐
10000000
255
MB Extended
memory
F0000
‐
FFFFF
64
K
System
BIOS
EE000
‐
EFFFF
8
K
Main
BIOS
(available
as
UMB)
ED000
‐
EDFFF
4
K
ESCD
(plug
and
play
configuration
area)
EC000
‐
ECFFF
4
K
OEM
(available
as
UMB)
E0000
‐
EBFFF
48
K
BIOS
Reserved
(currently
available
as
UMB)
D0000
‐
DFFFF
64
K
Available
HI
DOS
memory
CE000
‐
CFFFF
8
K
Flash
Disk
(optional)
CC000
‐
CDFFF
8
K
NCR
Trigantor
MSR
(optional)
C0000
‐
CBFFF
48
K
Onboard
video
BIOS
A0000
‐
BFFFF
128
K
Reserved
for
video
memory
9FC00
‐
9FFFF
1
K
Extended
BIOS
Data
(moveable
by
QEMM,
386MAX)
80000
‐
9FBFF
127
K
Extended
conventional
00000
‐
7FFFF
512
K
Conventional
Содержание 7454
Страница 1: ...NCR 7454 Retail Terminal Release 2 2 Hardware User s Guide 18004 NCR B005 0000 1256 Issue H...
Страница 38: ...1 26 Chapter 1 Product Overview 16 High Post Mount 17198...
Страница 50: ......
Страница 100: ...3 10 Chapter 3 Setup...
Страница 138: ...4 28 Chapter 4 Operating System Recovery...
Страница 148: ...5 10 Chapter 5 BIOS Updating Procedures...
Страница 151: ...Chapter 6 NCR 7454 4x20 Customer Display 6 3 Character Set Page 1 International...
Страница 152: ...6 4 Chapter 6 NCR 7454 4x20 Customer Display Page 2 Japanese...
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Страница 166: ...6 18 Chapter 6 NCR 7454 4x20 Customer Display...
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