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Chapter 3 Hardware
Express-HRR Reference Manual 19
Interrupt Channel Assignments
The interrupt channel assignments are shown in Table 3-1.
*Located on the baseboard
Legend: D = Default, X = Fixed, O = Optional
NOTE Table 3-1 is only for reference. Interrupt channel assignments are tied to the
specific legacy Super I/O device residing on the baseboard. This table can be
used with the baseboard in ADLINK’s Quick Start Kit.
Table 3-1. Interrupt Channel Assignments
Device vs IRQ No. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Timer X
PS/2 Keyboard* X
Secondary Cascade X
COM1* O D
COM2* D O
Floppy* D
Parallel* O D
RTC X
Math Coprocessor X
PS/2 Mouse* X
SATA Primary* X
SATA Secondary* X
Audio Controller Automatically Assigned
PCI INTA Automatically Assigned
PCI INTB Automatically Assigned
PCI INTC Automatically Assigned
PCI INTD Automatically Assigned
USB Automatically Assigned
Video Automatically Assigned
Ethernet Automatically Assigned
NOTE The IRQs for the Ethernet, Video, and USB are automatically assigned by the
BIOS Plug and Play logic. Local IRQs assigned during initialization can not be
used by external devices.