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Troubleshooting system-level problems

I/O address, memory address, or interrupt conflicts

If you have multiple controllers or adapters on your computer, it is possible that two or more hardware cards are configured with conflicting I/O or RAM addresses, or with conflicting interrupt vectors. This may cause a controller or adapter failure, unpredictable results, or a boot failure.

Review ``Interrupt vectors'' and verify that all hardware cards are configured correctly with non-conflicting IRQ and addresses.

Hardware vendors often supply diagnostic software to determine which I/O addresses, RAM addresses, and interrupt vectors are in use. Run the vendor diagnostics to make this determination and reconfigure conflicting hardware as necessary.

If all else fails, check whether any interrupts occupy one of the controller locations in the processor "set up" configuration. For example, this problem may occur if an adapter has interrupt 12 and a PS/2 mouse is used. In this case, you should either change the interrupt for the adapter or disable the mouse.


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UnixWare 7 Release 7.1.4 - 22 April 2004