Lenovo ThinkPad 380ED ThinkPad 380 and 380D User's Guide - Page 195

Appendix A. Avoiding Hardware Conflicts This appendix, listing the default and optional hardware settings, describes how to avoid system resource conflicts. It also describes how to do a network remote program load and how to start the computer from an ATA PC Card. Avoiding System Resource Conflicts ThinkPad Features program: Page 28. When a new option such as a PC Card is installed, the computer might not operate correctly because of conflicting settings for IRQ (interrupt) levels, I/O addresses, DMA channels, and memory addresses. To avoid these resource conflicts, you must know the hardware requirements, such as IRQ level and I/O addresses, for each option and program as shown in their manuals. Then you must check the current resource allocations for the computer and your expansion unit, and select the available resource values by using the ThinkPad Features program. List of system resources: Page 178. When you want to install a new Ethernet PC Card in the computer, you need to assign an IRQ for the PC Card. An Ethernet PC Card generally requires IRQ5 as a default interrupt level; however, IRQ5 has already been occupied by the audio device in the computer. You need to change the IRQ for the audio device when you use the Ethernet PC Card as follows: 1. Install the Ethernet PC Card in the PC Card slot. 2. Open the ThinkPad Features program and click on the audio icon. 3. Click on the Advanced button. Select the appropriate IRQ not to conflict to other devices in the Advanced Setup dialog and click on OK. You can see from the list of default settings on page 178 which system resources are already used by the devices in the computer. Copyright IBM Corp. 1996 175