The main board must have all the basic circuits to provide needed signal for video, audio, disk access and serial and paralell in/outputs also including the RAM memory. Each item, video, audio, etc.. must have their solutions provided by socket built processors which should be easily replaceable when need to upgrade.
There should be a space cutted in the main board, with a post defined size, for the exapnsions not provided by the basic standard. This cut must have a conection that alows one or more expansion boards to be in the same main board's plane. The cut size should alow a connection of at least three expansions not defined in the basic standard. This non standadrd foreseen expansion could be a video capture board or a unsual peripheral management (A robot as an example).
All motherboard's connections, this may include the processor's sockets, must have a hotswap capability, this means a part replace on the fly. The BIOS should manage the swap to avoid at maximum user losses. For the critical systems,like processors, a hotswap signal may be created (a software or key user action). This system would suspend all the proccess to avoid access to the replacing part and to reduce user data or program dammage.
The main proccessor and the BIOS will be post defined and if possible the main board must be proccessor and OS independent.
The working frequency definition should be issued by the proccessor or by an online overheat/speed test, this means that the main board finds the best relation between the clock and the processor heating.
The BUS clock should be at least 100MHz for all main board's resources. Better solutions will be pleased.
A new disk drive connection standard will be needed. This is already named drive channel and should include hds, cds, dvds and 3&1/2 successors.
