HP PL Class 450/500/550/600/650/700/750 User Manual page 98

Technical Information
System Specifications
I/O Addresses used by Workstation
82
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
RTC and CMOS
0070 - 0071
Manufacturing port (POST card)
0080
DMA low page register
0081 - 0083, 008F
PS/2 reset and Fast A20
0092
Little Ben
0096 - 0097
Slave interrupt controller
00A0 - 00A1
DMA controller 2
00C0 - 00DF
Coprocessor error
00F0 - 00FF
AD1816 sound system
0130 - 013F
Free (IDE secondary channel)
0170 - 0177
IDE primary channel
01F0 - 01F7
AD1816 Joystick
0200
AD1816 Sound Blaster
0220 - 0232
LPT 2
0278 - 027F
Serial port 4 (COM4)
02E8 - 02EF
Serial port 2 (COM2)
02F8 - 02FF
AD1816 MIDI
0330 - 0331
Free (Secondary flexible disk drive)
0372 - 0377
LPT1
0378 - 037A
AD1816 Adlib (FM)
0388 - 038B
VGA
03B0 - 03DF
COM3
03E8 - 03EF
Flexible disk drive controller
03F0 - 03F5
IDE primary channel
03F6
Flexible disk drive controller
03F7
COM1
03F8 - 03FF
Interrupt edge/level control
04D0 - 04D1
LPT2 ECP
0678 - 067B
LPT1 ECP
0778 - 077B
I configuration space
0CF8 - 0CFF
PIIX4 Power Management I/O space
8000
NS317 ACPI Registers
8400
PIIX4 SMBus I/O space
8800
Chapter 4