JETWAY 848PDAR1A User Manual

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JETWAY 848PDAR1A User Manual Manual pdf 13 page image

10Some expansion cards need an IRQ to operate. Generally, an IRQ must exclusively assign toone use. In a standard design, there are 16 IRQs available but most of them are already in use.Standard Interrupt AssignmentsIRQ Priority Standard function0 N/A System Timer1 N/A Keyboard Controller2 N/A Programmable Interrupt3 * 8 Communications Port (COM2)4 * 9 Communications Port (COM1)5 * 6 Sound Card (sometimes LPT2)6 * 11 Floppy Disk Controller7 * 7 Printer Port (LPT1)8 N/A System CMOS/Real Time Clock9 * 10 ACPI Mode when enabled10 * 3 IRQ Holder for PCI Steering11 * 2 IRQ Holder for PCI Steering12 * 4 PS/2 Compatible Mouse Port13 N/A Numeric Data Processor14 * 5 Primary IDE Channel15 * 1 Secondary IDE Channel* These IRQs are usually available for ISA or PCI devices.2-5-3 Interrupt Request Table For This MotherboardInterrupt request are shared as shown the table below:INT A INT B INT C INT D INT E INT F INT G INT HSlot 1 √Slot 2 √Slot 3 √Slot 4 √Slot 5 √Onboard LAN √Onboard USB 1 √Onboard USB 2 √Onboard USB 3 √Sound √IMPORTANT! If using PCI cards on shared slots, make sure that the drivers support “SharedIRQ” or that the cards don’t need IRQ assignments. Conflicts will arise betweenthe two PCI groups that will make the system unstable or cards inoperable.2-5-4 AGP SlotThis motherboard provides an AGP Slot, only support the 1.5V 4X/0.8V 8X AGP VGA card.