HP XU User Manual
Page 103
English
87
4 Technical Information
System Specifications
I/O Addresses used by
PC Workstation
0000 - 000F
DMA controller 1
0020 - 0021
Master interrupt controller
002E - 002F
Configuration registers
0040 - 0043
Timer 1
0060, 0064
Keyboard controller
0061
Port B (speaker, NMI status and control)
0070
Bit 7: NMI mask register
0070 - 0071
RTC and CMOS
0080
Manufacturing port (POST card)
0081 - 0083,
008F
DMA low page register
0092
PS/2 reset and Fast A20
0096 - 0097
Little Ben
00A0 - 00A1
Slave interrupt controller
00C0 - 00DF
DMA controller 2
00F0 - 00FF
Coprocessor error
0130 - 013F
AD1816 sound system
0170 - 0177
Free (IDE secondary channel)
01F0 - 01F7
IDE primary channel
0200
AD1816 Joystick
0220 - 0232
AD1816 Sound Blaster
0278 - 027F
LPT 2
02E8 - 02EF
Serial port 4 (COM4)
02F8 - 02FF
Serial port 2 (COM2)
0330 - 0331
AD1816 MIDI
0372 - 0377
Free (Secondary flexible disk drive)
0378 - 037A
LPT1
0388 - 038B
AD1816 Adlib (FM)
03B0 - 03DF
VGA
03E8 - 03EF
COM3
03F0 - 03F5
Flexible disk drive controller
03F6
IDE primary channel
03F7
Flexible disk drive controller
03F8 - 03FF
COM1
04D0 - 04D1
Interrupt edge/level control
0678 - 067B
LPT2 ECP
0778 - 077B
LPT1 ECP
0CF8 - 0CFF
PCI configuration space
8000
PIIX4 Power Management I/O space
8400
NS317 ACPI Registers
8800
PIIX4 SMBus I/O space
crystal.bk : cryst-4.fb4 Page 87 Monday, March 23, 1998 4:09 AM