That is correct - Hyperterminal does its own serial port configuration =
during initialization - only after it is satisfied with what is out =
there does it default to the configuration you have selected in =
System/Ports or wherever your OS puts it.  Using TeraTerm I do not have =
this problem - using Hyperterminal I do on MOST (not all) computers.  =
And H-T really does not like USB-RS232 dongles.

I discovered this the hard way many years ago, and have had the 1-6-4 & =
7-8 hardware jumpers on every PCB with RS232 that I have done since =
then.  Cheap insurance.

RJG
  ----- Original Message -----=20
  From: Alan B. Pearce=20
  To: Microcontroller discussion list - Public.=20
  Sent: Tuesday, September 27, 2005 4:49 AM
  Subject: Re: [EE] USB to RS232 converter


  >> That's fine, but two extra routes on your
  >>PC board cost you nothing
  >
  >On my Wisp628 PCB they would not have been free.

  ?? surely they would if put on the PCB master?

  >> it insures that if there is forced hardware hadshaking,
  >
  >But exactly who could force this, if it is you
  >yourlself who writes the PC software?

  The problem I heard is not that the software enforces handshaking, =
rather
  that the port driver in the op sys enforces detecting the return =
signals to
  know that there is a device "out there" to connect to, even when the =
port is
  being requested with no handshake.

  And HyperTerminal seems to be the worst bit of software to use to =
verify
  this. I always use the "terminal" program from Windows 3.x - it is a =
much
  saner piece of software.

  --=20
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