Question: The memory unit of a computer has 2 5 6 K locations. The computer has an instruction format with 4 fields: an opcode field; a

The memory unit of a computer has 256K locations. The computer has an instruction format with 4 fields: an opcode field; a mode field to specify one of 7 addressing modes; a register address field to specify one of 60 registers; and a memory address field. How many opcodes, at most, the system is able to support?

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