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OSBYTE &CD (205) - Read/Write RS423 destination

   A zero sends data to the RS423 port, and a value of one to the cassette port
   (Electron OS)
   Read/Write user key string length
   The current firm key being expanded into the input stream has this many
   characters remaining to be sent. Setting it to zero cancels the expansion.
   Firm keys are the text shortcuts stamped on the side of the keyboard and
   which are used in conjunction with the FN key.

See Also

Jgharston 22:50, 26 May 2009 (UTC)