Bios Addresses; System Memory Map - HP XM600 - Kayak - 128 MB RAM Technical Reference Manual

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.The procedure for updating the System
ROM firmware is described on

System Memory Map

Reserved memory used by accessory boards must be located in the area
from C8000h to EFFFFh.
0000 0000 - 0000 03FF
0000 0400 - 0000 04FF
0000 0500 - 0009 FC00
0009 FC00 - 0009 FFFF
000A_0000 - 000B_FFFF
000C 0000 - 000C 7FFF
000C 8000 - 000F FFFF
000E 0000-000F FFFF
0001 0000-000F FFFF
0010 0000-001F FFFF
0020 0000-003F FFFF
0040 0000-007F FFFF
0080 0000-7FFF FFFF
FECO 0000
FEEO 0000
FFFE 0000-FFFF FFFF
page 109.
Real-mode IDT
BIOS Data Area
Used by Operating System
Extended BIOS Data Area
Video RAM or
SMRAM (not visible unless in SMM)
Video ROM (VGA ROM)
Adapter ROM, RAM, memory-mapped registers, BIOS
128 KB BIOS (Flash/Shadow)
Memory (1 MB to 16 MB)
Memory (16 MB to 32 MB)
Memory (32 MB to 64 MB)
Memory (64 MB to 128 MB)
Memory (128 MB to 2 GB)
I/O APIC
Local APIC (each CPU)
128 KB BIOS (Flash)
5 HP BIOS
BIOS Addresses
113