Hardware Configuration - HP Vectra VE5 4 Technical Reference Manual

4 Summary of the HP/Phoenix BIOS
BIOS Addresses
I/O Address Ports
0278h - 027Fh
0279h
02E8h - 02EFh
02F8h - 02FFh
0370h - 0371h
0372h - 0375h
0376h
0377h
0378h - 037Ah
03B0h - 03DFh
03E8h - 03EFh
03F0h - 03F5h
03F6h
03F7h
03F8h - 03FFh
0678h - 067Bh
0778h - 077Bh
0CF8h - 0CFFh
DMA Channel Controllers
Only "I/O-to-memory" and "memory-to-I/O" transfers are allowed.
"I/O-to-I/O" and "memory-to-memory" transfers are disallowed by the

hardware configuration.

The system controller supports seven DMA channels, each with a page
register used to extend the addressing range of the channel to 16 MB. The
following table summarizes how the DMA channels are allocated.
60
Function
Parallel port 2
IO read data port for ISA Plug and Play enumerator
Serial port 4 (available if not used)
Serial port 2 (available if not used)
Super I/O controller
Secondary flexible disk drive controller
IDE hard disk drive controller secondary channel
Secondary flexible disk drive controller
Parallel port 1 (available if not used)
Graphics controller (S3 Trio 64V2)
Serial port 3
Primary flexible disk drive controller
IDE hard disk drive controller primary channel
Primary flexible disk drive controller
Serial port 1
Parallel port 2 if ECP mode is selected
Parallel port 1 if ECP mode is selected
Configuration registers for PCI devices