 unsigned blinkTimeHigh = 500;
 unsigned blinkTimeLow  = 500;
 TM1637Display display(DISPLAY_CLK, DISPLAY_DIO);
-byte displayInitData[] = {0, 0, 0, 0};
+byte displayInitData[] = { 0, 0, 0, 0 };
 
 void setup() {
   pinMode(SD_CS, OUTPUT);

  shiftOut(DATA, CLOCK, MSBFIRST, highbyte);
  shiftOut(DATA, CLOCK, MSBFIRST, lowbyte);
  digitalWrite(LATCH, HIGH);
  delay(1);
  digitalWrite(LATCH, LOW);
}


      ++romNumber;
    else if (key == DOWNKEY && lastkey != DOWNKEY && romNumber > 1)
      --romNumber;
    display.showNumberDec(romNumber, true, 2, 2);
    lastkey = key;
    key = getKey(A7);
  } while (key != SELECTKEY);

  // Construct ROM file name
  if (romNumber < 10) {
    romName[0] = '0';
    itoa(romNumber, romName+1, 10);
  } else {
    itoa(romNumber, romName, 10);
  }
  strcpy(romName+2, ".bin");

  // Initialize SD card and open ROM file
  if (SD.begin(SD_CS)) {
