Siemens Simatic 620 Owner's Manual page 107

Submenu "PCI/PNP ISA IRQ Resource Exclusion"
Available means that the Plug and Play mechanism in BIOS can allocate the IRQ
to Plug and Play submodules or motherboard functions.
Use the 'Reserved' setting only if the interrupt has to be assigned specifically to
PCMCIA submodules with no Plug and Play capability.
Figure 5-13
SIMATIC Box PC 620 Manual
A5E00131465-01
PhoenixBIOS Setup Utility
Advanced
PCI/PNP ISA IRQ Resource Exclusion
[ Available ]
IRQ 3:
IRQ 4: [Available]
IRQ 5: [Available]
IRQ 9: [Available]
IRQ 10: [Available]
IRQ 11: [Reserved]
Help Select Item
F1
ESC Exit Select Menu
"PCI / PNP ISA IRQ Resource Exclusion" Submenu
Configuring the SIMATIC Box PC 620
Item Specific Help
Reserves the specified
IRQ for use by legacy
ISA devices
+ / – Change Values F9
Select
Enter Sub-Menu F10
Setup Defaults
Save and Exit
5-19