program Boot
// Input:    A program (239 words).
// Output:   -
// Remarks:  Loads memory sectors 10 (inclusive) through FF (exclusive) program
//           from stdin.
// -----------------------------------------------------------------------------

00: 7101   R[1] <- 0001                  
01: 7210   R[2] <- 0010                  i = 10;
02: 73FF   R[3] <- 00FF                  
//                                       do {
03: 8AFF   read R[A]                       scanf("%hX", &a);
04: BA02   mem[R[2]] <- R[A]               mem[i] = a;
05: 1221   R[2] <- R[2] + R[1]             i++;
06: 2432   R[4] <- R[3] - R[2]           
07: D403   if (R[4] > 0) goto 03         } while (i < 255)