1. A method of executing an instruction set comprising a first instruction and a second instruction, the method comprising: reading the first instruction; determining whether the first instruction is integral with the second instruction; reading the second instruction; when the first instruction is integral with the second instruction, interpreting a first operator field of the second instruction to represent a first operator, wherein the first operator is an Add/Sub operator, and interpreting the first operator field of the second instruction to require an additional operand; and when the first instruction is not integral with the second instruction, interpreting the first operator field of the second instruction to represent a second operator, wherein the second operator is a Mov/Add operator.