Maximum Mode & Maximum Mode of 8086
Minimum mode configuration of 8086 microprocessor (Min mode) Overview : The 8086 microprocessor operates in minimum mode when MN/MX’ = 1. In minimum mode,8086 is the only processor in the system which provides all the control signals which are needed for memory operations and I/O interfacing. Here the circuit is simple but it does not support multiprocessing. The other components which are transceivers, latches, 8284 clock generator, 74138 decoder, memory and i/o devices are also present in the system. The address bus of 8086 is 20 bits long. By this we can access 2 20 byte memory i.e. 1MB . Out of 20 bits, 16 bits A 0 to A 15 (or 16 lines) are multiplexed with a data bus. By multiplexing, it means they will act as address lines during the first T state of the machine cycle and in the rest, they act as data lines. A 16 to A 19 are multiplexed S 3 to S 6 and BHE’ is multiplexed with S 7 . Maximum mode of 8086 block diagram Control signals provided by 8...