HP Vectra VT 6/xxx HP Vectra XU 6/xxx and VT 6/xxx PCs - Technical Reference M - Page 36

I/o Addresses Used By The System

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BIOS 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 under "System ROM" in chapter 2. There is BIOS support for ISA "Plug and Play" accessory board configuration. It includes support for Plug and Play 1.0A, IDE PIO mode 4, Startup center, flash memory, desktop management interface (DMI) and the data integrity features. It ensures PCI 2.0 compliance with PCI-to-PCI bridge support. The Fast-20 SCSI-2 BIOS is also integrated with the system BIOS. 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). *If configured. 170h-177h 1F0h-1F7h 200h 220h-232h 240h-252h 260h-272h 278h-27Fh 280h-292h 2E8h-2EFh 2F8h-2FFh 300h-30Bh 330h-33Bh 370h-371h 376h-377h 378h-37Ah 388h-38Bh 3B0h-3DFh 3E8h-3EFh 3F0h-3F7h 3F8h-3FFh Hard IDE disk controller 2 (ISA) Hard IDE disk controller 1 (PCI) Joystick port Audio chip 1 (SoundBlaster) Audio chip 2(SoundBlaster) Audio chip 3 (SoundBlaster) Parallel port 2 Audio chip 4 (SoundBlaster) Serial port 4 Serial port 2 MPU-401 1 MPU-401 2 reserved (for the integrated Ultra I/O controller, SMC 932, I/O configuration) Hard IDE disk controller 2 (ISA) Parallel port 1 Ad-lib / FM Video adapter Serial port 3 Primary flexible disk drive controller Serial Port 1 Refer to the "HP BIOS I/O Port Map" later in this chapter for more detailed information.

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BIOS
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 under "System ROM" in
chapter 2.
There is BIOS support for ISA “Plug and Play” accessory board configuration. It includes support
for Plug and Play 1.0A, IDE PIO mode 4, Startup center, flash memory, desktop management
interface (DMI) and the data integrity features. It ensures PCI 2.0 compliance with PCI-to-PCI
bridge support. The Fast-20 SCSI-2 BIOS is also integrated with the system BIOS.
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).
*If configured.
170h-177h
Hard IDE disk controller 2 (ISA)
1F0h-1F7h
Hard IDE disk controller 1 (PCI)
200h
Joystick port
220h-232h
Audio chip 1 (SoundBlaster)
240h-252h
Audio chip 2(SoundBlaster)
260h-272h
Audio chip 3 (SoundBlaster)
278h-27Fh
Parallel port 2
280h-292h
Audio chip 4 (SoundBlaster)
2E8h-2EFh
Serial port 4
2F8h-2FFh
Serial port 2
300h-30Bh
MPU-401 1
330h-33Bh
MPU-401 2
370h-371h
reserved (for the integrated Ultra I/O controller,
SMC 932, I/O configuration)
376h-377h
Hard IDE disk controller 2 (ISA)
378h-37Ah
Parallel port 1
388h-38Bh
Ad-lib / FM
3B0h-3DFh
Video adapter
3E8h-3EFh
Serial port 3
3F0h-3F7h
Primary flexible disk drive controller
3F8h-3FFh
Serial Port 1
Refer to the “HP BIOS I/O Port Map” later in this chapter for more detailed information.