Abstract: Methods and arrangements to negotiate a bit rate for a message of a communication on a multiple client communication medium such as a bus are disclosed. Embodiments may comprise a host for medium management and one or more client devices coupled with a communication medium. The host and/or one or more of the client devices may comprise devices capable of originating communications across the communication medium, also referred to as originating devices. Furthermore, the host and/or one or more of the clients may comprise devices capable of receiving communications via the communication medium, also referred to as receiving devices. Upon selecting a first bit rate, the originating device may transmit an address associated with one or more receiving devices that are the target of a communication. The originating device may then negotiate a second bit rate with the receiving device(s) to facilitate transmission of a message of the communication.

Abstract: A system that may optionally be partitioned into multiple domains is disclosed. Each domain is capable of independently powering on, executing a firmware program, and loading an operating system, including a legacy operating system, as well as running an application program that is distinct from programs running on another domain. Interrupts, including boot interrupts, reset handlers, and inter-chassis communications are initialized differently, depending on whether the system is to be partitioned or not. The cost of redundant hardware and/or firmware is substantially avoided, yet the system fully supports multiple domains.

Abstract: A system that may optionally be partitioned into multiple domains is disclosed. Each domain is capable of independently powering on, executing a firmware program, and loading an operating system, including a legacy operating system, as well as running an application program that is distinct from programs running on another domain. Interrupts, including boot interrupts, reset handlers, and inter-chassis communications are initialized differently, depending on whether the system is to be partitioned or not. The cost of redundant hardware and/or firmware is substantially avoided, yet the system fully supports multiple domains.