Abstract: Prior inverter controls have been developed which are capable of controlling switches in an inverter to produce one of a plurality of polyphase output waveforms. Such controls utilize one or more memories to store a plurality of modulation patterns for controlling the switches. However, such types of inverter controls cannot provide individual phase regulation with the required degree of noise immunity. In order to overcome this problem, an inverter control according to the present invention includes a plurality of memories, one for each phase, each of which is subdivided into a plurality of memory blocks which store a number of bytes, each of which is eight bits in length. Each bit is a zero or one, with a zero representing a first output condition for the respective phase, such as a notch, and a one representing a second output condition, such as a pulse.