Serial & Interrupts

This is a discussion on Serial & Interrupts within the C++ Programming forums, part of the General Programming Boards category; Hi Everyone, I have a question... Some of you may have seen my other post on the DOS board, but ...

  1. 01-10-2003 #1
    jon_nc17
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    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. 01-10-2003 #2
    DougDbug
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    www.beyondlogic.org

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

    [EDIT]
    Corrected above URL. Man, that was embarrasing!
    [/EDIT]
    Last edited by DougDbug; 01-12-2003 at 12:05 AM.
  3. 01-10-2003 #3
    Sebastiani
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    You mean www.beyondlogic.org/
    Code:
    int main(void){srand(time(0));for(double l=rand(),l0=0,l00=0;;l0+=0.1){for(double l000=0;l000
<1;l000+=.001,l+=((double)rand()/RAND_MAX)/0x64,l00+=((sin(l*0x8*atan(l0)*l000-(l0*0x8*atan
(l)))*0.5)+0.5)){l00-=floor(l00);for(size_t l0000=0,l00000=(size_t)(0x50*(l00));l0000<l00000;++l0000
)putchar(0x20);putchar(0x61+(int)((double)rand()/RAND_MAX*0x1a));putchar('\n');}}return 0;}
  4. 01-11-2003 #4
    DougDbug
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    Red face Oops!

    Thanks Sebastiani.
    Sorry jon_nc17.
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