GATE | GATE CS 2020 | Question 54

A processor has 64 registers and uses 16-bit instruction format. It has two types of instructions: I-type and R-type. Each I-type instruction contains an opcode, a register name, and a 4-bit immediate value. Each R-type instruction contains an opcode and two register names. If there are 8 distinct I-type opcodes, then the maximum number of distinct R-type opcodes is _______ .

Note – This question was Numerical Type.
(A) 14
(B) 15
(C) 16
(D) 12


Answer: (A)

Explanation:

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