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ExpMgrConfigWriteLong

You can use the ExpMgrConfigWriteLong function to write a long word to an address in PCI configuration space.



 
OSErr ExpMgrConfigWriteLong (

                     RegEntryIDPtr node,

                     LogicalAddress configAddr,

                     UInt32 value);

node: A node identifier that identifies a device node. If you specify a node identifier that isn't in the device tree, ExpMgrConfigWriteLong returns a result code of deviceTreeInvalidNodeErr.
configAddr: The configuration address (a value between 0 and 255).
value: The 32-bit value as it would appear on the PCI bus. The function performs the necessary byte swapping.

DESCRIPTION

The ExpMgrConfigWriteLong function writes the byte-swapped value of value to the address in PCI configuration space for device node node starting at offset configAddr.

RESULT CODES

`noErr`	0	No error
`deviceTreeInvalidNodeErr`	-2538	Device node not in the device tree