44 CR11*, CP11*, CT11* 6U CompactPCI® SBC
Publication No. HRMCR11 Rev. B.0
Interrupts
APIC Controller
The i11tem1pt routing for standard components such as COM!/2 or LPTI is in
compliance with standard PC
/
AT
sys
tem
s
.
Unused interrupts can be used for
add-on cards or other board specific PCI devices such as SCSI and Et
h
ernet
.
.
Hardware IRQ
INTCl
IRQOO
IRQO!
IRQ02
IRQ03
IRQ04
IRQOS
IRQ06
IRQ07
INTC2
IRQ08
IRQ09
IRQ!O
IRQ!l
IRQ12
IRQ13
IRQ14
IRQ!S
NMI
Table 22: Interrupt assignments
IRQ Source
System Ti.mer
Keyboard'
Cascade from INTC2
CO
M2
/
COM!
b
COM!
/
COM2
b
Real Time Clock
Power Management Contr.
PnP/PCI
b
PnP/PCI
b
PS
/
2
Mouse
'
Numeric Coprocessor
External IDE
d
Onboard IDE'
Parity Error,
ECC Error,
System Error
'. This interrupt is available when no I11tem1pt Service Routine is installed.
b
.
I11tem1pts are available for Plug and Play PCI devices
'. This interrupt is available when PS
/
2
mouse is not connected
.
d
.
Tius i11tem1pt is available when the priniary IDE is di.sabled in SETUP.
'
.
This interrupt is available when the secondary IDE is di.sabled in SETUP.
The CR! I supports also the Intem1pt handlings with APIC (Advanced Intem1pt
Controlle
r).
Tius handling of the APIC i.11tem1pt services must be supported by
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