SCU_COMM_EXEC_HOLD
status = write16(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
status = write16(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
status = write16(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
status = write16(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);