def word_csr_i(opcode, syntax, xregs, fregs, imms, symbols):
    tpe = CSR
    csr = random.choice(csr_names)
    insts = [syntax.format(csr)]
    return (tpe, insts)
def word_csr_i(opcode, syntax, xregs, fregs, imms, symbols):
    tpe = CSR
    csr = random.choice(csr_names)
    insts = [syntax.format(csr)]
    return (tpe, insts)