Emulation of large systems

The conversion problem and a new technique called emula¢i0~ are discussed. The technique of emulation is developed and includes sections on both the Central Processing Unit (CPU) and the Input/Output unit ( I /0). This general treatmen is fol!a'#ed by three sections that describe in greater detail the mplementation of compatibility features using the emulation iechniques for the IBM 7074, 7080 and 7090 systems on IBM System/360.