Abstract: A method of testing a multi-processor unit microprocessor. The method includes: (a) selecting and testing, with a selected parameter set of a group of parameter sets, a processor unit of a microprocessor having two or more processor units; (b) comparing the operation of the selected processor unit to a selected specification of a set of operational specifications of the microprocessor; (c) if the testing indicates that the operation of the selected processor unit does not meet the selected specification, repeating (a) and (b) with a different parameter set of the group of parameter sets until either the selected processor unit meets the selected specification or all parameter sets of the group of parameter sets have been selected; and (d) if the operation of the selected processor unit does meet the selected specification, repeating (a), (b) and (c) until all processor units have been selected.