4 – The following 32-bit binary word written in hexadecimal format represents a single RISC-V assembly...

4 – The following 32-bit binary word written in hexadecimal format represents a single RISC-V assembly instruction. What is the RISC-V instruction format and specific assembly language instruction?

0x00156A33

Expert Solution

:: Solution ::

0x00156A33

Binary Value = 0000 0000 0001 0101 0110 1010 0011 0011

Each RISC-V Instruction has right most 7 bits for opcode.

Opcode = 0110011 (R-Type Instruction)

Opcode 0110011 represents R-Type operations. Format for R-type Risc-V instruction is as below.

func7 = 0000000
rs2 = 00001 = x1 (Source Register 2)
rs1 = 01010 = x10 (Source Register 1)
func3 = 110
rd = 10100 = x20 (Destination Register)

func7 + func3 represents actual operation. Based on below information, we can tell operation is OR operation

So, Instruction is

OR X20, X10, X1

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venereology answered 8 months ago

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