Hp I/O Port Map (I/O Addresses Used By The System); Table 4-4 - HP X Class 500/550MHz Reference Manual
Personal workstation
Hide thumbs
Also See for X Class 500/550MHz:
- User manual (86 pages) ,
- Administrator's manual (118 pages) ,
- Installation manual (60 pages)
Table of Contents
Advertisement
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. When installing an accessory board, ensure that the I/O address space
selected is in the free area of the space reserved for accessory boards (100h to 3FFh).
Table 4-4. HP I/O Port Map
Default Values for
I/O Address Ports
0000 - 000F
0020 - 0021
002E - 002F
0040 - 0043
0060, 0064
0061
0070
0070 - 0071
0080
0081 - 0083, 008F
0092
00A0 - 00A1
00C0 - 00DF
00F0 - 00FF
0130 - 013F
0170 - 0177
01F0 - 01F7
0200 - 0207
0220 - 0232
0278 - 027F
02E8 - 02EF
02F8 - 02FF
0372 - 0377
0378 - 037A
0330 - 038B
03B0 - 03DF
03E8 - 03EF
03F0 - 03F5
03F6
03F7
03F8 - 03FF
04D0 - 04D1
0678 - 067B
1. If configured.
Chapter 4
DMA controller 1
Master interrupt controller (8259)
NS-317 Configuration registers
Timer 1
Keyboard controller (reset, slow A20)
Port B (speaker, NMI status and control)
Bit 7: NMI mask register
RTC and CMOS data
Manufacturing port (POST card)
DMA low page register
PS/2 reset and Fast A20
Slave interrupt controller
DMA controller 2
Co-processor error
AD1816 sound system
Free (IDE secondary channel)
IDE primary channel
AD1816 Joystick port
AD1816 Soundblaster
LPT 2
Serial port 4 (COM4)
Serial port 2 (COM2)
Free (IDE secondary channel, secondary flexible disk drive)
LPT1
AD1816 Ad-lib (FM)
VGA
COM3
Flexible disk drive controller
IDE primary channel
Flexible disk drive controller
COM1
Interrupt edge/level control
LPT2 ECP
1
)
Function
HP BIOS
BIOS Addresses
105
Advertisement
Table of Contents
