SCA_TMC0
msci_write_1(scp, SCA_TMC0, scp->sp_tmc);
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0), 0);
if ((tmp = bus_space_read_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0))) != 0) {
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0), 0x5A);
tmp = bus_space_read_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0));