Subj : Re: turbo C++ 3.0, bioscom
To   : borland.public.cpp.borlandcpp
From :  Bruce Salzman
Date : Wed Aug 25 2004 09:18 am

> But serial data is time sensitive. You have to time the bit changes
> pretty close, and if the user moves the mouse--there goes your
timing.
> That's an exageration, but it's still quite a chore to get reliable
> serial communications out of a port that's not built for it.

I imagine it can be done, with DOS/Turbo C++ 3.0 and busy/wait loops.
(yuck)

>
> Also, RS232 is supposed to be +-15 volts. Don't remember what
parallel
> ports put out.

0-5V. The original poster didn't actually mention RS-232, but it's
likely that whatever is on the other end expects that (unless it's a
custom build thing).

Regards,
Bruce

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