h6. [[OS SWI Calls]] h6(. » [[OS_SerialOp]] h6((. » OS_SerialOp 1 h2. OS_SerialOp 1 h5. (SWI &57) |_<^{width:4em}. Entry | | |<^. R0 |<^. 1 | |<^. R1 |<^. -1 to read, or new [[Serial Data Transfer Word|format]] value | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved| |<^. R1 |<^. Old format value | h4. Use The purpose of this call is to set the encoding of characters when sent and received on the serial line. h4. See also * [[OS_SerialOp]] * [[Serial Data Transfer Word]]