Dissimilar processor synchronization in fly-by-wire high integrity computing platforms and displays

A method of comparing output information from dissimilar processors, comprising:

• receiving a task by a first processor;
• receiving the task by a second processor, the second processor being dissimilar to the first processor;
• computing a first output by the first processor based on the task;
• computing a second output by the second processor based on the task;
• transaction synchronizing the first and second outputs by the first and second arbitration devices;
• and
• comparing by a comparator processor the transaction synchronized outputs of the first and second processors.

A processing system, comprising:

• an output device;
• a first processor;
• a second processor, the second processor being dissimilar to the first processor;
• a first arbitration device coupled to the first processor;
• a second arbitration device coupled to the second processor, the second arbitration device configured to coordinate transaction synchronization with the first arbitration device and the first arbitration device configured to coordinate transaction synchronization with the second arbitration device;
• and
• a comparator program receiving information from the first arbitration device and the second arbitration device, the comparator program being configured to compare transaction synchronized outputs of the first and second processors.