HP (Hewlett-Packard) 810E ユーザーズマニュアル
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4 BIOS overview
BIOS addresses
BIOS addresses
This section provides a summary of the main features of the HP system BIOS.
This is software that provides an interface between the computer hardware
and the operating system.
This is software that provides an interface between the computer hardware
and the operating system.
system memory map
hp I/O port map (I/O addresses used by the system)
Peripheral devices, accessory devices and system controllers are accessed via
the system I/O space, which is not located in system memory space. The 64
KB of addressable I/O space comprises 8-bit and 16-bit registers (called
I/O ports) located in the various system components.
the system I/O space, which is not located in system memory space. The 64
KB of addressable I/O space comprises 8-bit and 16-bit registers (called
I/O ports) located in the various system components.
0000 0000 - 0000 03FF
Real-mode IDT
0000 0400 - 0000 04FF
BIOS Data Area
0000 0500 - 0009 FC00
Used by OS
0009 FC00 - 0009 FFFF
Extended BIOS Data Area
000A_0000 - 000B_FFFF
Video RAM or
SMRAM (not visible unless in SMM)
SMRAM (not visible unless in SMM)
000C 0000 - 000C 7FFF
Video ROM
000C 8000 - 000F FFFF
Adapter ROM, RAM, memory-mapped registers
000E 0000 - 000F FFFF
System BIOS (Flash/Shadow)
10 0000 - FF FFFF
Memory (1 MB to 16 MB)
100 0000 - 1FF FFFF
Memory (16 MB to 32 MB)
200 0000 -3FF FFFF
Memory (32 MB to 64 MB)
400 0000 -1FFF FFFF
Memory (64 MB to 512 MB)
FFF80000 - FFFF FFFF
512 KB BIOS (Flash)