IBM ThinkPad 755CX, Manual

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Appendix A. Avoiding Hardware Conflicts
When options such as the AT adapter or application programs are
installed, the system might not operate correctly because of conflicts
in IRQ (interrupt level), I/O addresses, DMA channel, and memory
addresses.
To avoid these conflicts, you must be aware of hardware
requirements, such as IRQ and I/O addresses, for each option and
program as shown in their manuals. You also must check the
current resource allocations for the computer and the ThinkPad Dock
I or Dock II and select the available resource values.
OS/2
WIN
If you are using OS/2 or Windows, do the following:
1
Start the ThinkPad Features program.
2
Select ThinkPad Setup.
3
Select the icon you want to set up in the ThinkPad
Setup window.
4
Click on the appropriate resources (IRQ, DMA, or
Memory) to assign for the device.
These changes will become effective when computer power is
turned off and then on again.
DOS
When you are using DOS, do the following:
Use the PS2 command to change the values for devices.
Type PS2 ? at the command prompt; then press Enter.
PS2 command:
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