44
4 Summary of the HP/Phoenix BIOS
BIOS Addresses
I/O Address Ports
Function
0000h - 000Fh
DMA controller 1
0020h - 0021h
Interrupt controller 1
0040h - 0043h
Interval timer 1
0060h, 0064h
Keyboard controller
0061h
NMI status and control
0070h
NMI mask register, RTC and CMOS address
0071h
RTC and CMOS data
0081h - 0083h, 008Fh
DMA low page register
0092h
Alternate reset and A20 Function
00A0h - 00A1h
Interrupt controller 2
00C0h - 00DFh
DMA controller 2
00EAh - 00EBh
Internal port
00F0h - 00FFh
Co-processor error
0100h - 0107h
HP reserved (GPIO)
0108h - 0109h
HP reserved
015Ch - 015Dh
Super I/O controller
0170h - 0177h
IDE hard disk drive controller secondary channel
01F0h - 01F7h
IDE hard disk drive controller primary channel
0278h - 027Fh
Parallel port 2
02E8h - 02EFh
Serial port 4
02F8h - 02FFh
Serial port 2
0376h
IDE hard disk drive controller secondary channel
0378h - 037Ah
Parallel port 1
03B0h - 03DFh
Video controller
03E8h - 03EFh
Serial port 3
03F0h - 03F5h
Primary flexible disk drive controller
03F6h
IDE hard disk drive controller primary channel
03F7h
Primary flexible disk drive controller
03F8h - 03FFh
Serial port 1
0496h - 0497h
HP reserved (Little Ben)
0678h - 067Bh
Parallel port if ECP mode is selected 2
0778h - 077Bh
Parallel port if ECP mode is selected 1
0CF8h - 0CFFh
Configuration registers for PCI devices
Содержание Vectra VE5 3
Страница 1: ...Technical Reference Manual Hardware and BIOS HP Vectra VE series 3 PC ...
Страница 8: ...Contents viii ...
Страница 16: ...8 1 System Overview Documentation ...