Asus P4SP-MX SE P4SP-MX SE English User Manual E1676a - Page 21
Standard interrupt assignments, IRQ assignments for this motherboard - audio driver
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Standard interrupt assignments IRQ Priority Standard Function 0 1 System Timer 1 2 Keyboard Controller 2 N/A Programmable Interrupt 3* 11 Communications Port (COM2) 4* 12 Communications Port (COM1) 5* 13 IRQ holder for PCI steering 6 14 Floppy Disk Controller 7* 15 Printer Port (LPT1) 8 3 System CMOS/Real Time Clock 9* 4 IRQ holder for PCI steering 10* 5 Advance AC'97 CODEC 11* 6 Standard PCI Graphics Adapter (VGA) 12* 7 PS/2 Compatible Mouse Port 13 8 Numeric Data Processor 14* 9 Primary IDE Channel 15* 10 Secondary IDE Channel * These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard ABCDE PCI slot 1 - used - - - PCI slot 2 - - shared - - PCI slot 3 - - - shared - AGP slot shared - - - - Onboard USB controller 1 - - - - used Onboard USB controller 2 - - - - - Onboard USB controller 3 - - - - - Onboard USB 2.0 controller - - - - - Onboard LAN - - - shared - Onboard audio - - shared - - Onboard VGA shared - - - - F - - - - - used - - - - - GH used - - used -- -- -- When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable. ASUS P4SP-MX SE motherboard user guide 1-13