//---------------------------------------------------------------
// EXAMPLE EX14.C :  Demonstrate use of POINTERS.
//
// C.P. Diduch, Dec 1999.
//---------------------------------------------------------------
#define	KEY_PA	0x138	  // 82C55A port addresses for PA,
#define KEY_PB	0x13A	  // PB,
#define KEY_PC	0x13C	  // PC and the
#define KEY_CON	0x13E	  // Control Register.

#include <conio.h> 	  // conio.h contains prototypes for 
			  // inportb() and outportb(). 
//---------------------------------------------------------------
void main()
{
unsigned i;
char X;
int *ptr;
int DATA[] = {10,20,30,40,50,0};

outportb(KEY_CON, 0x82);  // Initialize 82C55A PPI with ports 
			  // KEY_PC and KEY_PA as OP ports and 
			  // port PB as an IP port.
ptr = &DATA[0];
while ((X = *ptr) != 0) {
   outportb(KEY_PC, X);
   ptr = ptr + 1;
   }
}