Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!waikato.ac.nz!iam
From: iam@waikato.ac.nz (Ian McDonald)
Newsgroups: comp.windows.ms.programmer
Subject: Re: MS Win and Interrupt
Message-ID: <1991Apr16.100652.3442@waikato.ac.nz>
Date: 16 Apr 91 10:06:51 +1200
References: <16489@chaph.usc.edu>
Organization: University of Waikato, New Zealand
Lines: 62

In article <16489@chaph.usc.edu>, syau@aludra.usc.edu (Shu-Jye Syau) writes:
> Hi :
>     I am trying to use MS window to write a voice card program .
>     I need to know how to set the interrupt vector for hardware interrupt .
>     ( when voice comes in , ADC interrupt PC to info PC to get 8-bit data)
>     Please Help .
>
Below is the code I used to set up vectors.  I am using mine for a voice card
as well - A Scott Instruments board.

Sorry I couln't reply by EMail - I have no priveledge to do that.
 
/* winvect.c */

/* A replacement for Microsoft's routines which are not in Windows libraries

   History

   iam 08 Jan 91 Created
*/

#include <windows.h>
#include "winvect.h"

void(_interrupt _far *_dos_getvect(unsigned intnum))() {
  void _far *vect;

  /* Dos function 35 is Get vector function.  Specify the interrupt in al
     and the vector will be returned in es:bx */

  _asm {
    mov ax,intnum
    mov ah,35h
    int 21h
    mov vect+2,es
    mov vect,bx
  }
  return(vect);
}

void _dos_setvect(unsigned intnum,void(_interrupt _far *handler)()) {

  /* Dos function 25 is set vector.  Put interrupt number in al,
     vector in ds:dx */

  _asm {
    push ds
    mov ax,intnum
    mov ah,25h
    lds dx,handler
    int 21h
    pop ds
  }
}

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