h6. [[DeviceFS]] h6(. » [[DeviceFS SWI Calls|SWI Calls]] h6((. » DeviceFS_TransmitCharacter h2. DeviceFS_TransmitCharacter h5. (SWI &42747) |_<^{width:4em}. Entry | | |<^. R1 |<^. DeviceFS stream handle | |_<^{width:4em}. Exit | | |<^. R0 |<^. Byte to transmit | |<^. - |<^. C set => unable to read a character to transmit | h4. Use The purpose of this call is to inform [[DeviceFS]] that a device driver wants to transmit a character. h4. Notes This SWI is made by a device when it wants to transmit a character. DeviceFS will try to find character (unbuffer one, or read from a waiting stream). For speed DeviceFS_TransmitCharacter and [[DeviceFS_ReceivedCharacter]] do not validate the external handle passed - strange things will happen if bad handles are passed. h4. See also * [[DeviceFS_ReceivedCharacter]]