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Appendix D Memory Map - IBM 4840-563 System Reference Manual

Technical system reference surepos 500 series
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Appendix D Memory Map

ADDRESS
ADDRESS
RANGE (DEC)
RANGE
(HEX)
0 to 639K
00000 to
9FC00
639K
9FC00 to
9FFFF
640K to 767K
A0000 to
BFFFF
768K to 815K
C0000 to
CBFFF
816K to 895K
CC000 to
DFFFF
896K to 1MB
E0000 to
FFFFF
1MB to 16MB
100000 to
FFFFFF
16MB to 4GB-
1000000 to
20M
FEBFFFFF
4GB-20M to
FEC00000 to
4GB-19M
FECFFFFF
4GB-19M to
FED00000 to
4GB-18M
FEDFFFFF
4GB-18M to 4GB
FEE00000 to
- 17M
FEEFFFFF
4GB-17M to 4GB
FEF00000 to
- 2M
FFDFFFFF
4GB -2M to 4GB
FFE00000 to
FFFFFFFF
SurePOS 500 Model XX3 Technical Reference, v 1.3
SIZE
ISA BUS
DECODE
512K
positive,
subtractive
1K
positive,
subtractive
128K
positive,
subtractive
48K
positive,
subtractive
80K
positive,
subtractive
128K
positive,
subtractive
15MB
positive,
subtractive
4060MB
subtractive only
1MB
subtractive only
1MB
subtractive only
1MB
subtractive only
15MB
subtractive only
2MB
subtractive only
81
DESCRIPTION
Conventional DOS memory
EBDA (Extended BIOS Data)
moveable by HIMEM, QEMM,
386MAX
Intel 82845GVLegacy Video
Buffer
Intel 82845GV Video ROM BIOS
(shadowed)
PCI/ISA Space, DOS memory
managers
System ROM BIOS (ISA Bus,
main memory shadowed) and
USB Legacy space
PCI/ISA Space
PCI Space
APIC Configuration space
PCI - hub interface
APIC Configuration space
PCI - hub interface
System ROM BIOS, extended
BIOS for PCI devices, A20 Alias
of System BIOS
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