Using System Resources - Intergraph TD-260 System Manual

Address (hex)
0120 - 013F
0170 - 0177
01F0 - 01F7
0201 - 0201
0220 - 022F
0274 - 0277
02F8 - 02FF
0330 - 0331
0376 - 0376
0378 - 037F
03F0 - 03F5
03F8 - 03FF
03F6
04D0 - 04D1
0CF8 - 0CFF

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.
Description
PCI-to-USB controller
Standard IDE/ESDI hard disk controller
Primary IDE controller
MIDI/game port
Sound processor
ID data read-only port (ISA Plug and Play)
Serial port (COM2)
Sound processor
Secondary IDE controller
Parallel port (LPT1)
Floppy disk drive controller
Serial port (COM1)
Primary IDE controller
System board resources
PCI bus
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