Thread: Serial & Interrupts

  1. #1
    Registered User jon_nc17's Avatar
    Join Date
    May 2002

    Question Serial & Interrupts

    Hi Everyone,

    I have a question... Some of you may have seen my other post on the DOS board, but this one is more general. I am trying to make a program that works on a DOS touch screen computer. The touch screen is allegedly connected to COM3, using interrupt 15. I think I have read that normally COM3 uses interrupt 3 or 4, so is there anything special that I have to do to specifically use interrupt 15? Also, if it's not to much trouble, can anyone find an example? Anyway, thanks for your help!

    Jon Scott

  2. #2
    Hardware Engineer
    Join Date
    Sep 2001

    There is some fascinating info about programming ports at: I dunno if it will answer your question.

    Corrected above URL. Man, that was embarrasing!
    Last edited by DougDbug; 01-12-2003 at 01:05 AM.

  3. #3
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Waterloo, Texas
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
        return std::pow
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;

  4. #4
    Hardware Engineer
    Join Date
    Sep 2001

    Red face Oops!

    Thanks Sebastiani.
    Sorry jon_nc17.

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