Re: Will Windows 7 be a laptop upgrade nightmare?

"AJL" <5@xxxxxxxxxxxxxxx> kirjoitti viestissä news:cqpa35d4p3fbuc0gmgoaihntchqh8r230k@xxxxxxxxxx
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.

.

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