Siemens SIMATIC Box PC 620 Manual page 141

Interrupt assignment
Interrupt
IRQ0 Timer output 0
IRQ1 Keyboard
IRQ2 Cascaded (IRQ9)
IRQ3 Serial port 2
IRQ4 Serial port 1
IRQ5 PCI, Plug and Play
IRQ6 FD controller
IRQ7 Parallel port 1
IRQ8 Real–time clock (RTC)
IRQ9 PCI, Plug and Play (Redirected IRQ2) 1) 2) Default interrupt in VGA, Ethernet and
IRQ10 PCI, Plug and Play
IRQ11 PCI, Plug and Play
IRQ12 PS-2 mouse
IRQ13 Numeric processor
IRQ14 HD controller 1 (primary)
IRQ15 HD controller 2 (secondary)
1) PCI cards and the on-board PCI devices require PCI interrupt lines. These interrupt lines are sharable
and plug and play capable. This means several devices can share one interrupt. The interrupt assign-
ment is done automatically. PCI interrupt lines must be derived from the ISA interrupt pool, this means
PCI modules also use ISA resources. This allocation is done automatically, too.
Plug and play incapable ISA cards can be allocated to a free interrupt by setting the "PCI/PNP ISA
IRQ Resource Exclusion" of the corresponding interrupt to reserved in the BIOS setup menu. Refer to
the respective ISA module documentation for the respective interrupt to be allocated.
2) These functions can be disabled. The allocated resources become free as a result.
PCI interrupt lines assignment
PCI Interrupt Line
1 unused
2 Cardbus
3 3 Ethernet
VGA
4 4 USB 1.1 Controller A
USB 1.1 Controller B
PCI – MPI/DP
1) These functions can be disabled. The allocated resources become free as a result.
SIMATIC Box PC 620 Manual
A5E00131465-03
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Description
Description
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Hardware Information
Remark
cannot be disabled
cannot be disabled
cannot be disabled
2)
2)
1) 2) Default interrupt in PROFIBUS
cannot be disabled
2)
cannot be disabled
Raid Controller
2)
1)
2)
cannot be disabled
2)
2)
Remark
exclusive Interrupt Slot 1
1)
1)
cannot be disabled
cannot be disabled
cannot be disabled
1)
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