I asked this some time ago - and no-one came up with an answer
Basically you want to control Tx the same as RTS and DTR - yes ?
There MUST be a way of doing this ......
Something like setting the baud rate to zero, and sending a 0 or FF char
to set hi or lo states - that was a guess btw
Maybe you need to do port i/o wuth status registers ?
Surely SOMEONE must have an idea ????
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Quote:
> > I am busy with a serial pic programmer, but need to manually control
the
> > level of my TXD line. Is there anyway I can use MSCOMM in this way. I
> > know with MSCOMM I can controll DTR and RTS, but it doesn't seem to
work
> > for TXD. Is there maybe a third party DLL or OCX that supports this.
> > NOTE: This application must work for 95/98 and NT!
> Normally the TxD-line will generate a logical High. When you enable the
> "break" -state, it will become a logical Low.
> Regards,
> Rudy Wieser
Serial port interfacing