System Memory Map; I/O Port Map (I/O Addresses Used By The System) - HP x4000 Technical Reference Manual

System Memory Map

Reserved memory that accessory boards use must reside 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-FFFF FFFF
FECO 0000
FEEO 0000
FFF8 0000-FFFF FFFF
I/O Port Map (I/O Addresses Used by the System
You access peripheral devices, accessory devices, and system controllers
through the system I/O space, which isn't 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.
When you install an accessory board, ensure that the selected I/O
1. If configured.
Chapter 4
This manual downloaded from http://www.manualowl.com
System BIOS and Resources
System Resources
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
128KB BIOS (Flash/Shadow)
Memory (1MB to 16MB)
Memory (16MB to 32MB)
Memory (32MB to 64MB)
Memory (64MB to 128MB)
Memory (128MB to 4GB)
I/O APIC
Local APIC (each CPU)
512KB BIOS (Flash)
1
)
65