Hardware Interaction C


            # include
# include
# include
# include
# include
void main()
{
	clrscr();
	union REGS regs;
	int ans;
	char arr[1000];
	outp(0x3f2,0x1c); //Motor On
	delay(200);
	outp(0x3f5,0x0f); //Command Code
	delay(200);
	outp(0x3f5,0x00); //Command Code
	delay(200);
	outp(0x3f5,0x0b); //Cylinder no.
	delay(200);
	outp(0x3f5,0x08); //Sense Interrupt Command
	delay(200);
	ans=inp(0x3f5); //Reading ST0 in data register
 //	cout<	delay(100);
	ans=inp(0x3f5); //pcn
	cout<	outportb(0x12,0); /*initialization of DMA Mode*/
	outportb(0x11,10); /*supplying Mode Byte*/
	clrscr();
	int ar=FP_OFF(arr);
	int ar1=FP_SEG(arr);
 printf(" %x",ar1);
 regs.h.ch = (ar1)&(0x0f00);
 printf(" %x",(regs.h.ch));
 regs.x.ax = regs.h.ah+ar;
 (regs.h.ch)++;
 printf(" %x",regs.x.ax);
 int z = (regs.x.ax) & (0x0f00);
 cout<<"
"< getch();
 outportb(0x04,regs.h.al);
 outportb(0x04,regs.h.ah);
 outportb(0x81,regs.h.ch);
 outportb(0x05,1);
 // dma end
 outp(0x3f2,0x0c); //Motor off
 return;
}