#include "header.h"
void setup() {
  init_port();
  volatile char *outf, *outk;
  outf = 0x31; outk = 0x108;
  unsigned char A[] = {0x08, 0x18, 0x2c, 0x28, 0x18, 0x2c, 0x18, 0x08};
  char row, col;
  while(1){
    for(row=0;row<8;row++){
      *outk = ~(1<<row);
      *outf = A[row];
      *outf = 0x00;
    }
    
  }
}