The IS420UCSBH4A is an available controller for the GE Mark VIe system. This is one of the last Speedtronic systems released by General Electric for the management of industrial gas and steam turbines. The IS420UCSBH4A is one of five UCSB controllers that are available for use within the Mark VIe system. It is a quad-core controller that offers high performance with optimal reliability. The unit is built around a QNX Neutrino operating system running on a 1066 MHz Intel EP80579 microprocessor. This system uses control block language with Boolean logic in relay ladder diagram format. This format supports Boolean logic as well as 16- and 32-bit signed and unsigned integer as well as 32- and 64-bit floating-point programming.