Siemens SIMATIC PANEL PC 877 - Page 249

Detailed descriptions
17.6 BIOS setup
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
17-57
"IRQ resource exclusion" submenu
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Figure 17-14 IRQ Resource Exclusion submenu (example)
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 submodules
with no Plug and Play capability.