h6. [[OS SWI Calls]] h6(. » [[OS_Byte]] h6((. » OS_Byte 192 h2. OS_Byte 192 h5. (SWI &06) |_<^{width:4em}. Entry | | |<^. R0|<^. 192 (&C0) | |<^. R1|<^. 0 | |<^. R2|<^. 255 | |_<^{width:4em}. Exit|_<^. | |<^. R0|<^. Preserved | |<^. R1|<^. Communication state | |<^. R2|<^. Flash counter (see [[OS_Byte 193]]) | h4. Use The purpose of this call is to read the serial port state. h4. Notes This call is deprecated. Please use [[OS_SerialOp 0]] or [[OS_SerialOp 1]] instead. It is equivalent to a read operation with [[OS_Byte 156]]. It is provided for backwards compatibility only. This call should not be used to write the value - doing so would make the value in memory inconsistent with the hardware. h4. See also * [[OS_Byte]] * [[OS_Byte 156]] * [[OS_Byte 193]] * [[OS_SerialOp 0]] * [[OS_SerialOp 1]]