Instruction code format

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An instruction code is a set of bits that lays down a sequence of micro-operation that the computer needs to perform a specific task. Operands are definiteThe basic computer has three instruction code formats. The Operation code (opcode) part of the instruction contains 3 bits and remaining 13 bits depends code of k bits that specifies one of 2k registers. • Each computer has its own particular instruction code format. • Instruction code formats are conceived The basic computer has three instruction code formats: – Memory-reference format – where seven 3-bit opcodes are followed by a 12-bit memory address and Note: The Operation code (Opcode) of an instruction refers to a group of bits that define arithmetic and logic operations such as add, subtract, multiply, shift Instruction format is defined as machine instruction format that CPU can directly decode and execute. Addressing Mode, OPCODE, OPERAND. COA.