1. Encoding. For each RISC-V instruction, find out its encoding format, the bits in each field, and the machine code as 8 hexadecimal digits. An example is shown below. Pay attention to the number of bits in each field. or s1, s2, s3 slli t1, t2, 16 xori x1, x1, -1 lw x2, -100(x3) Example: Instruction: add to, t1, t3 Find out register numbers: add x5,x6,x28 R-type opcode: 0110011 rd: 00101 funct3: 000 rs1: 00110 rs2: 11100 funct7: 0000000 machine code in bits: 00000001110000110000001010110011 machine code in hex: 01C302B3