Manual

If Something Goes Wrong
User's Manual 5-7
Version
1
Last Saved on 19/sep/01 2:46
Equium 8100D/M – 05chap.doc – ENGLISH – Printed on 23/sep/01 as 04_800UK
Direct Memory Access
Similarly, the data required by the device are stored in a specific place or
address in memory called the Direct Memory Access (DMA). The DMA
provides a dedicated channel for adaptor cards to bypass the
microprocessor and access memory directly. If two or more devices use
the same DMA, the data required by one device overwrite the data
required by the other. If this occurs, you have a hardware conflict.
Plug and Play
When supported, Plug and Play prevents hardware conflicts. Plug and
Play is a computer standard that helps the system BIOS and the
operating system to automatically assign system resources to Plug and
Play-compliant devices. In theory, if every device connected to the
computer is Plug and Play-compliant, no two devices will compete for the
same system resources. You simply plug in the device and turn on the
computer. Windows automatically sets up your system to accommodate
the new device.
However, if you install an older (legacy) device that Windows cannot
recognise, Windows may have difficulty assigning system resources to it.
As a result, a hardware conflict can occur. To see what resources
Windows has assigned to the device, see Checking device properties.
Resolving conflicts
You can do three things to resolve hardware conflicts:
■
Disable the device.
For an older device, remove it from the computer. For a Plug and Play
device, see Fixing a problem with device manager below.
■
Disable another system component and use its resources for the new
device.
See Fixing a problem with device manager below.
■
Reconfigure the device so that its requirements do not conflict.
Refer to the device’s documentation for instructions about changing
settings on the device.