Computer with expanded addressing capability

摘要: A computer system has an addressing capability many times greater than the number of address which can be generated by its binary lines through use a plurality addressable banks (14, 16, 18, 22, 30, 34) (memory, peripherals or controls) in each different ranges, (II, III, IV) with several said plural ranges being useable combination for any given mode operation program. Bank selection within range is effected program control first supplying (1) enables bank select decoding latch (28), and (2) data code selecting desired bank, whereupon will latched enabled later normal operation. ROM 18), implemented monolithic circuit form, are selected decoder outputs (D2, D1, D0) cause (40) to energized from non-energized state, thereby eliminating need separate chip-select terminal, standby power consumption. Addressable peripheral equipment controls (30, (non-ROM hardware) mapped (III) containing banks. Writing this automatically goes non-ROM hardware since incapable receiving data. Reading preselecting specific codes.