M-AUDIO Delta DiO 2496 - Manual (Page 20)

Troubleshooting
This section addresses potential problems that can occur in all operating system
environments, with emphasis on hardware troubleshooting. Within the PC environ-
ment there are a limited number of hardware resources (Addresses, IRQs, and DMA
channels) available for use. Since audio cards require many resources, most audio
card installation problems arise from unavailable or improperly set resources.
NOTE: The Delta DiO does not require any DMA channel
resources and requires only one IRQ.
If a device in Windows’ Device Manager list has a resource conflict with another
device, a yellow exclamation point will generally appear on top of the icon next to
that device. There can be several ways to approach this.
By highlighting an item with a problem, then clicking Properties (or double-clicking
the item), you will open up a properties sheet for that device. Selecting the
Resources tab from within the Properties dialog box will allow you to view
resources, plus view possible conflicts by highlighting each item (done by clicking
on it) one by one and examining the "Conflicting resource list:" at the bottom of the
box.
Sometimes it is possible that there is a resource problem that is not showing up in
the conflicting resource list or as a yellow exclamation point in the Device Manager.
If you have any doubt about the configuration of your device (or just want to dou-
ble-check), you can view all of the devices and their associated IRQs by highlight-
ing "Computer" at the top of the Device Manager list and clicking Properties (or
double-click "Computer"). This will present a dialog box with IRQ numbers on the
left, and devices on the right. An entry that reads "IRQ Holder for PCI Steering"
along with an installed PCI device (such as the Delta DiO) is normal. If you see
another device showing up on the same IRQ as the Delta DiO (such as a video card,
SCSI adapter, or USB Host Controller), then the Delta DiO has a conflict and most
likely is not working properly. As mentioned earlier, the Computer Properties list is
the best source of information to establish availability of resources. Clicking the
Input/Output (I/O) button at the top of the box will give you a list of Addresses in
use (as well as DMA channels, although none are being used on the Delta DiO).
Usually, there are not address problems with PnP devices, but one might note that an
address of 300h (the default address of the Winman 4X4/s, for instance), will read
"0300" in this list (it is a 16-bit hexadecimal representation).
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