METHOD AND APPARATUS FOR COMMUNICATING TRANSACTION TYPES BETWEEN HUBS IN A COMPUTER SYSTEM

摘要

One embodiment of an apparatus for communicating transaction types between hubs in a computer system includes a data path input/output unit to output a packet header. The packet header includes a request/completion field to indicate whether the packet header is a request packet header or a completion packet header. The packet header also includes a read/write field to indicate whether the packet header is for a read packet or for a write packet. The read/write field further indicates whether a length of data is to follow the packet header. The packet header further includes a data length field to indicate the length of data.