   return data;
 }
 
-/** Test code frame ... */
+/** Test code frame ... 
+  *  
+  *  Various code and hardware test sequences, to be activated by pre-processor directives
+  */
 void testCode() {
   
   static bool first = true;

  delay(5000);
}

/** Test code to test the address latching unit. */
void testAddressLatches() {

  static uint8_t addr = 0x01;

          Serial.println();
        break;
      
      case 't':
      case 'T':
          Serial.println();
          Serial.println(F("Select any possible E(E)PROM type:"));
          Serial.print(EEprom::eEEPROM_2716); Serial.println(F(" - 2716 (2K * 8)"));
          Serial.print(EEprom::eEEPROM_2732); Serial.println(F(" - 2732 (4K * 8)"));
          Serial.print(EEprom::eEEPROM_2764); Serial.println(F(" - 2764 (8K * 8)"));
