Supermicro P4SGA+ User Manual download pdf (Page 53)

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Chapter 3: Troubleshooting

Question: I see some of my PCI devices sharing IRQs, but the sys-

tem seems to be fine. Is this correct or not?

Answer: Some PCI Bus Mastering devices can share IRQs without perfor-

mance penalties. These devices are designed to work correctly while shar-

ing IRQs. See Table 3-1, below, for details on shared IRQs.

* Assumes USB 2.0 drivers have not been installed.

** Since the P4SGR/P4SGE only have five PCI slots, the USB 2.0 controller

has its own dedicated IRQ.

Table 3-1. P4SGA/P4SGL/P4SGR/P4SGE IRQs

PCI 1 shares an IRQ with AC97 and the System Management bus

PCI 2 shares an IRQ with a USB 1.1 controller (USB4 & USB5)*

PCI 3 shares an IRQ with a USB 1.1 controller (USB2 & USB3)*

PCI 4 has a dedicated IRQ (does not share)

PCI 5 has a dedicated IRQ (does not share)

PCI 6 shares an IRQ with the USB 2.0 controller (USB0 - USB5)**

Question: I installed my microphone correctly but I can't record any

sound (P4SGA/P4SGL). What should I do?

Answer: Go to <Start>, <Programs>, <Accessories>, <Entertainment> and

then <Volume Control>. Under the Properties tab, scroll down the list of

devices in the menu and check the box beside "Microphone".

Question: How do I connect the ATA100/66 cable to my IDE

device(s)?

Answer: The 80-wire/40-pin high-density ATA100/66 IDE cable that came

with your system has two connectors to support two drives. This special

cable must be used to take advantage of the speed the ATA100/66 technol-

ogy offers. Connect the blue connector to the onboard IDE header

and the other connector(s) to your hard drive(s). Consult the docu-

mentation that came with your disk drive for details on actual jumper loca-

tions and settings.

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Supermicro P4SGA+ User Manual Page 53