1. A processing system for performing data processing operations in response to a single data processing instruction, comprising: at least two registers for storing data; first control circuitry, the first control circuitry comparing data in respective corresponding fields of the at least two registers to create a plurality of condition values; second control circuitry for receiving the plurality of condition values and performing one or more predetermined logic operations on less than all of the plurality of condition values and on more than one condition value of the plurality of condition values to generate a condition code for each of the one or more predetermined logic operations; and a condition code register for storing the condition code for each of the one or more predetermined logic operations.