1.*: Assembler messages: 2.*:3: Error: the source register must not be \$31.* 3.*:4: Error: the source register must not be \$31.* 4.*:6: Error: the source register must not be \$31.* 5.*:7: Error: the source register must not be \$31.* 6.*:9: Error: the source register must not be \$31.* 7.*:10: Error: the source register must not be \$31.* 8