1. A system for implementing non-standard input/output (I/O) adapters in a standardized I/O architecture, the system comprising: an I/O hub communicatively coupled to an I/O bus and a plurality of I/O adapters at I/O adapter addresses, the I/O hub including logic for implementing a method comprising: receiving requests from the plurality of I/O adapters, each request comprising an address of a target recipient and an operation code; storing the I/O adapter addresses of a requester along with their corresponding target recipient addresses and operation codes; transmitting the requests to the target recipients; receiving a response from a responder at a responder address, the response indicating that a request has been completed, the response comprising an address of a target recipient and a responder operation code; determining that the response is in a format other than a format supported by the I/O bus; transforming the response into the format supported by the I/O bus; locating a stored I/O adapter address having a corresponding target recipient address that matches the responder address and a corresponding operation code that matches the responder operation code; and transmitting the transformed response to the stored I/O adapter address.