MB>
  >          For example, if you trigger the event semaphore
  > every 10 bytes, and you physically receive 5 bytes, then
  > those 5 bytes will sit in the buffer forever unless you
  > either receive 5 more bytes or do something special to get
  > them out of there.
  >
  > [ Loads of stuff about timers deleted ]
MB>

  The best design is to use Wait-For-Something on the serial port with a
  large buffer and to post the event semaphore every time that DosRead
  returns some data.

  This has the dual advantages that the consumer thread never has to worry
  about "missed" data (since the event semaphore is *always* posted) and
  the producer thread never has to worry about large overheads for
  individual characters, since Wait-For-Something will get a whole
  bufferful of data in one DosRead call if there are that many data
  available.

  This also moves all of the "timeout" processing into its proper place :
  in the serial device driver.

  > JdeBP <
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