Getac 9270D Service Manual page 107

4.7 Interrupt Signals
Name
SERIRQ
PIRQ[D:A]#
PIRQ[H:E]# /
GPIO[5:2]
Type
Serial Interrupt Request: This pin implements the serial
I/OD
interrupt protocol.
PCI Interrupt Requests: In non-APIC mode the PIRQx#
signals can be routed to interrupts 3, 4, 5, 6, 7, 9, 10, 11, 12, 14
or 15. Each PIRQx# line has a separate Route Control register.
I/OD In APIC mode, these signals are connected to the internal I/O
APIC in the following fashion: PIRQA# is connected to
IRQ16, PIRQB# to IRQ17, PIRQC# to IRQ18, and PIRQD# to
IRQ19. This frees the legacy interrupts.
PCI Interrupt Requests: In non-APIC mode the PIRQx#
signals can be routed to interrupts 3, 4, 5, 6, 7, 9, 10, 11, 12, 14
or 15. Each PIRQx# line has a separate Route Control register.
In APIC mode, these signals are connected to the internal I/O
I/OD
APIC in the following fashion: PIRQE# is connected to
IRQ20, PIRQF# to IRQ21, PIRQG# to IRQ22, and PIRQH# to
IRQ23. This frees the legacy interrupts. If not needed for
interrupts, these signals can be used as GPIO.
Description