53
Address (hex)
Description
0120 - 013F
PCI-to-USB controller
0170 - 0177
Standard IDE/ESDI hard disk controller
01F0 - 01F7
Primary IDE controller
0201 - 0201
MIDI/game port
0220 - 022F
Sound processor
0274 - 0277
ID data read-only port (ISA Plug and Play)
02F8 - 02FF
Serial port (COM2)
0330 - 0331
Sound processor
0376 - 0376
Secondary IDE controller
0378 - 037F
Parallel port (LPT1)
03F0 - 03F5
Floppy disk drive controller
03F8 - 03FF
Serial port (COM1)
03F6
Primary IDE controller
04D0 - 04D1
System board resources
0CF8 - 0CFF
PCI bus
Using System Resources
Most ISA devices installed in the system require you to reserve an IRQ. PCI devices also need
to use an IRQ, but since they share system resources they can use the same IRQ. At least one
IRQ must be left unassigned, for use with any PCI devices installed in your system.
To reserve an IRQ for an installed device:
1.
Restart the system and start the BIOS Setup program.
2.
On the Advanced/PCI Configuration screen, select the IRQ you want to reserve.
3.
Change the setting for the selected IRQ to
Reserved
.
4.
Save the changes and exit from the BIOS Setup program.
The system has a limited number of open IRQs. To install more ISA devices than you have
open IRQs, you must disable one unused system port for each excess ISA device, unless the
device does not require an IRQ.
