How can I call BIOS Interrupts in VC++?

How can I call BIOS Interrupts in VC++?

• Kojacked

  Bardia Hamedani wrote:

  Hello I`m new to VC++,I tried to compile this code in VC++ but I couldn`t but when I did this in TC++ ,it was compiled with no problem. void goto_xy(int x , int y); void cls() ; I think the reason was the dos.h header file.what can I do

  Hello Bardia.

  Your real question seems to be, "How can I clear the screen and move the cursor" This question, has nothing to do with accessing interrupts. It's only in DOS where the way to clear the screen was to resort to the interrupts. Neither Windows, UNIX, MacOS X, BSD, OS/2, nor Linux make use of interrupts to clear the screen.

  So let's answer your real question: "How do I clear the screen "

  As noted in the C++ FAQ, there is no standard clrscr function available to you. It told you to consult the compiler documentation for more information. In Visual C++, the way to clear the screen is to use the Console::Clear() function. (.NET must be enabled).

  If you're not allowed to use .NET, then you can make use of system("cls");.

  Performing the gotoxy() however, requires more trickery (cannot be done with C++ alone, it requires .NET or Win32).

  
  
  

• The Markus

  Hello Oshah.

  so how can I use REGS union,in86(),bdosptr,bdos,intdos function existed in dos.h header file

  int86( int intnum,union REGS *in,union REGS *out)

  int intdos(union REGS *in,union REGS *out)

  int bdos(int fnum,unsigned dx,unsigned al)

  int bdosptr(int fnum,void *dsdx,unsigned al)

  struct WORDREGS{

  unsigned int ax,bx,cx,dx,si,di,cflag,flags;

  }:

  struct BYTERREGS{

  unsigned char al,ah,bl,bh,cl,ch,dl,dh;

  };

  union REGS{

  struct WORDREGS x;

  struct BYTERREGS h;

  };

  struct SREGS{

  unsigned int es;

  unsigned int cs;

  unsigned int ss;

  unsigned int ds;

  };

  struct REGPACK{

  unsigned r_ax,r_bx,r_cx,r_dx;

  unsigned r_bp,r_si,r_di,r_ds,r_es,r_flag;

  };

  for example in these programs:

  #include <stdio.h>

  #include <conio.h>

  #include <dos.h>

  void set_palette(int palette, int color);

  void main()

  {

  int p, color;

  set_palette(p, color);

  getch();

  }

  //********************

  void set_palette(int palette, int color)

  {

  union REGS in, out;

  in.h.ah = 0x0B;

  in.h.bh = palette;

  in.h.bl = color;

  int86(0x10, &in, &out);

  }

  or:

  #include <stdio.h>

  #include <conio.h>

  #include <dos.h>

  void dir_list() ;

  void main()

  {

  dir_list();

  getch();

  }

  //********************

  void dir_list()

  {

  union REGS in, out ;

  char pp[44] ;

  bdosptr(0x1a, pp, 0) ;

  bdosptr(0x4e, "*.*", 0) ;

  printf("\n %s \n", &pp[30]) ;

  for(;;) {

  if(bdos(0x4f, 0, 0) == 18)

  break ;

  printf("\n %s \n", &pp[30]) ;

  }//end of for

  }

  and the errors for the second:

  c:\vc programs\new\new\new.cpp(13) : error C2079: 'in' uses undefined union 'dir_list::REGS'

  c:\vc programs\new\new\new.cpp(13) : error C2079: 'out' uses undefined union 'dir_list::REGS'

  c:\vc programs\new\new\new.cpp(15) : error C3861: 'bdosptr': identifier not found

  c:\vc programs\new\new\new.cpp(16) : error C3861: 'bdosptr': identifier not found

  c:\vc programs\new\new\new.cpp(19) : error C3861: 'bdos': identifier not found

  
  

• Sudha

  There is no way to do this under Windows. The acess to the BIOS is protected.

  There is no way to execute BIOS functions from within a Win32 application. Use the Win32 API

  
  
  

• satheeshkumarana

  Let's tackle these questions one by one. (All assume .NET is available... if you can't use .NET, let me know, and I'll give Win32 solutions).

  Q1. How do we set the console foreground and background color

  Console::BackgroundColor = ConsoleColor::DarkMagenta;
  Console::ForegroundColor = ConsoleColor::White;

  Q2. How do we get a listing of all files in a folder

  Either system("dir C:\\YourDir\\*.*"); or:

  array<String ^> filelist = System::IO::Directory::GetFiles(L"C:\\Yourdir", L"*.*");
  int i = 0;
  for each(String ^filename in filelist)
  {

    Console::WriteLine("FileName {0} = {1}", ++i, filename);
    /* Do what you want to the file here... */

  }

  Any other function

  
  
  
• How can I call BIOS Interrupts in VC++?