Question

The following 32-bit hexadecimal number describes a RISC-V machine instruction. Decode this instruction into a RISC-V assembly language statement (like `add x0, x1, x2`).

To receive partial credit, you should show your steps including converting to binary format and identifying opcode, funct3, rs1, etc.

0x00C1F963

Answer 1

bit representation of the hexadecimal number is -

0000 0000 1100 0001 1111 1001 0110 0011

(left to right reading the bits)

according to first 7 bits from left, this is a branching statement, format is SB-format

bits 12-14 are 111 , this states that it's BGEU instruction

bits 15 to 19 represents register source rs1

20-24 -> rs2

rs1 and rs2 are used for comparison here.

and 13 bit immediate with value 18 [0000000010010]