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//FROM ## 2.4 Integer Computational Instructions
//### Integer Register-Immediate Instructions
//

[wavedrom, ,]
....
{reg: [
  {bits: 7,  name: 'opcode',    attr: 'OP-IMM', type: 8},
  {bits: 5,  name: 'rd',        attr: 'dest', type: 2},
  {bits: 3,  name: 'func3',     attr: ['SLLI', 'SRLI', 'SRAI'], type: 8},
  {bits: 5,  name: 'rs1',       attr: 'src', type: 4},
  {bits: 5,  name: 'imm[4:0]',  attr: 'shamt[4:0]', type: 3},
  {bits: 7,  name: 'imm[11:5]', attr: [0, 0, 32], type: 8}
]}
....