HP Vectra XU 6/XXX HP Vectra XU 6/xxx and VT 6/xxx PCs - Technical Reference M - Page 39

HP BIOS I/O PORT MAP This section describes the HP BIOS port map. The next section provides more details about how the BIOS uses the system board components mentioned in the I/O port list. I/O Address Ports Function Bits 0000h - 000Fh DMA controller 1 8 0020h - 0021h Interrupt controller 1 8 0040h - 0043h Interval timer 1 8 0060h, 0064h Keyboard controller 8 0061h NMI status and control 8 0070h NMI mask register, RTC address and CMOS 8 0071h RTC data and CMOS 8 0081h - 0083h, 008Fh DMA low page register 8 0092h Alternate reset and A20 Function 8 0096h - 009Fh Internal ports 8 00A0h - 00A1h Interrupt controller 2 8 00C0h - 00DFh DMA controller 2 8 00EAh - 00EBh Internal port 8 00F0h - 00FFh Co-processor error 0170h - 0177h Secondary IDE controller 01F0h - 01F7h IDE controller 0200h Joystick port 0220h - 0232h Audio chip 1 (Soundblaster) 0240h - 0252h Audio chip 2 (Soundblaster) 0260h - 0272h Audio chip 3 (Soundblaster) 0278h - 027Fh Parallel port 2 0280h - 0292h Audio chip 4 (Soundblaster) 02E8h - 02EFh Serial port 4 02F8h - 02FFh Serial port 2 0300h - 030Bh MPU-401 1 0330h - 033Bh MPU-401 2 0370h - 0371h SMC 932 configuration 0378h - 037Fh Parallel port 1 0388h - 038Bh Ad-lib / FM 03B0h - 03DFh Video 03E8h - 03EFh Serial port 3 03F0h - 03F7h Flexible disk controller 03F8h - 03FFh Serial port 1 0CF8h - 0CFFh Used for PCI configuration* *These addresses are dedicated to configuration registers for PCI devices.