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Configuration Space Cycle Generation

The Expansion Bus Manager contains six routines that let you read and write data to specific addresses in the PCI configuration space for a specified device tree node.

All of the configuration space access routines use the type RegEntryIDPtr to identify device nodes in the device tree, as described in Name Registry Using RegEntryIDPtr lets the system software and the bridge generate the correct PCI configuration cycle for the target device.

ExpMgrConfigReadByte

ExpMgrConfigReadWord

ExpMgrConfigReadLong

ExpMgrConfigWriteByte

ExpMgrConfigWriteWord

ExpMgrConfigWriteLong


© 1999 Apple Computer, Inc. – (Last Updated 26 March 99)