If you are using an EUC terminal (KS C 5601-1987-0), load the ku8euc module by typing the following command as superuser:
| system% su Password: (Type superuser password here if required.) # modload /kernel/strmod/ku8euc | 
To enable the stream module:
| system% setterm -x KU8EUC | 
To enable 8-bit I/O:
| system% stty defeucw cs8 -istrip | 
If you want to use dtterm, type the following command:
| system% setterm -x u8 |