IBM 847651U Handbook - Page 89

Using the Configuration/Setup Utility program Plug and Play Control Select this choice to control features associated with Plug and Play devices, such as Set Device Node, Address Decode, and Plug and Play Operating System. Select Set Device Node to control the device node. When you change this value to Disabled, the system cannot update the configuration during POST. Processor Control Select this choice to control features associated with the microprocessors, such as Processor 0 ID and Processor Updating. ISA Legacy Resources Plug and Play is a configuration method that makes expanding your server easier. Support for Plug and Play is built into the system board of your server. If an adapter is Plug and Play, there are no switches or jumpers that must be set on the adapter. A Plug and Play adapter comes with configuration specifications set in memory to provide installation information to the server during startup. When you install or remove Plug and Play adapters, this information is interpreted by the BIOS, which supports Plug and Play technology. If the required resources are available, the BIOS software automatically configures the adapter around the resources already in use by other devices. Most adapters designed for PCI slots are Plug and Play devices that are auto-configuring. However, many ISA adapters are not Plug and Play devices. These adapters are known as legacy adapters. If you install a legacy adapter, you must manually configure it by setting switches or jumpers on the adapter, and by allocating or reserving the system resources that the adapter will use. Note: See "Resolving configuration conflicts" on page 57 for information about handling resource conflicts. Select ISA Legacy Resources to identify the available system resources: Memory Chapter 3. Configuring your server 55