6.883 bytes

Service Hints & Tips

Document ID: GKEY-3GWFKL

PCServer704 - Configuration Conflicts

Applicable to: World-Wide

Configuration Conflicts

The resources used by the server consist of interrupt request levels (IRQs), direct memory access channels (DMAs), I/O ports (for example, serial and parallel), and memory. This information is useful when a resource configuration conflict occurs.

Conflicts in the configuration occur if:
1. An installed device requires the same resource as another device. (For example, if you install an ISA network adapter and an EISA network adapter, both requesting IRQ 5, you can configure only one of the adapters.
2. A device resource is changed (for example, changing jumper settings).
3. A device function is changed (for example, assigning COM 1 to two different serial ports).
4. An installed software program requires the same resource as a hardware device.

The steps required to resolve a configuration error depends on the number and variety of hardware devices and software programs that install. If a hardware configuration error is detected, a configuration errormessage appears after the server completes POST, but before the operating system starts. You can bypass the error or start one of the configuration utility programs. Press Esc to bypass the error and load the operating system. Press F1 to start the Setup program. To start the SCU program, insert the diskette in the diskette drive and press F1. If the System Configuration Utility program resides on a hard disk drive, type SCU from the MS-DOS prompt for the appropriate drive.

The Setup program and the System Configuration Utility program only configure the system hardware. These programs do not consider the requirements of the operating system or the application programs. See 'Resolving Software Configuration Conflicts— for additional information.

Resolving Hardware Configuration Conflicts
Use the following information to help resolve hardware configuration conflicts:

1. Run the System Configuration Utility Program. to view and change the resources that are used by the system board functions. Record the current settings before making any changes.
(See Starting the System Configuration Utility Program— for instructions.)

2. Determine which adapter or device is causing the error. Use the System Configuration Utility Program Change Configuration Settings selection to update system configuration information ( .CFG ) files.
(See 'Step 3: Change Configuration Settings— for instructions.)

3. Change configuration resource allocations. Using the System Configuration program, change Configuration Settings selection to view or change system board resource allocations.
(See 'Step 3: Change Configuration Settings— for instructions.)

Jumpers and switches define the system resources that a device can use. If the settings are incorrect or set to use a resource that cannot be shared, a conflict occurs and the device remains deactivated. Use the System Configuration Utility program Switch/Jumper Settings selection to verify switches, see 'Step 5: Switch/Jumper Settings— If a change is required, see "System Board".In addition, read the documentation that came with the device.

4. Change system board jumpers or switches. If a change is required, see "System Board".

5. Remove the device or adapter. Some configurations are not supported (for example, you cannot operate the server with two ISA SVGA adapters installed).

Resolving Software Configuration Conflicts
The memory-address space and interrupt levels (IRQs) used by some hardware options might conflict with addresses defined for use through application programs.

If there is a conflict, one or more of the following conditions might exist:
1. The system cannot load the operating system.
2. The system does not work.
3. An application program does not operate, or it returns an error.

Screen messages indicate a conflict exists.

You can resolve conflicts by changing either the software or the hardware configuration.

Note Use the System Configuration Utility Program. Change Configuration Settings selection to view the addresses used by the system board functions and adapters.

Changing the Software Configuration
If a device driver is causing a memory-address conflict, refer to the operating-system documentation or the documentation supplied with the device drivers.

	Search Keywords
	Hint Category	Configuration, Hardware Maintenance Information
	Date Created	12-06-96
	Last Updated	22-05-98
	Revision Date	21-11-98
	Brand	IBM PC Server
	Product Family	PC Server 704
	Machine Type	8650
	Model	Various
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes