#pragma inline

#include <dos.h>

#include <iostream.h>

#include <string.h>

struct INTERRUPT

{

unsigned bp,di,si,ds,es,dx,cx,bx,ax,ip,cs,fl;

};

void interrupt (*prev)();

void interrupt mycmd(INTERRUPT);

unsigned char far *buffer;

void main()

{

unsigned long far *ptr;

ptr=(unsigned long far*)(0x21*4);

prev=(void (interrupt far*)())*ptr;

*ptr=(unsigned long)mycmd;

keep(0,500);

}

void interrupt mycmd(struct INTERRUPT r)

{

char command[128];

if(_AH==0x0a)

{

buffer=(unsigned char far*)MK_FP(r.ds,r.dx);

cout<<endl<<"Enter Commnand : ";

cin>>command;

// strcpy(buffer,command);

}

asm pop bp;

asm pop di;

asm pop si;

asm pop ds;

asm pop es;

asm pop dx;

asm pop cx;

asm pop bx;

asm pop ax;

asm jmp cs:_prev;

}