"AJL" <5@fakeaddress.com> kirjoitti viestissä
news:cqpa35d4p3fbuc0gmgoaihntchqh8r230k@4ax.com...
> Years ago I wrote a Quickbasic program for Keyboarding Morse code. I
> wrote one for receiving as well. I built an external interface for the
> keyboard and receiver that used the serial port. It worked great under
> DOS (5) but failed under later copies of Windows. For some reason
> Windows wouldn't allow my program access to the hardware through the
> serial port. I would guess that a home automation program written for
> DOS might fail for the same reason depending on how the author
> accessed the hardware.

Have you tried to run DOS in an emulator window under Windows? Perhaps
Windows would allow accessing serial port from an emulator if you map
virtual serial port on virtual DOS PC to host PC's serial port? If that
would work, you could have Windows and DOS running same time -- if that's of
any benefit to you.

If you want to try that, DOSBox comes with its own version of DOS, and on MS
Virtual PC you can install your DOS 5.

But on second thought, you said you're sending and receiving Morse code;
that sounds pretty time critical, which emulators are not. While the host PC
is busy, the emulated computer runs slower, which probably would affect
lengths of signals to be sent or received. Oh well, you've coped with either
DOS or Windows running at a time so far, so maybe there's nothing that needs
to be fixed in the first place...

P.V.