readFATEntry
nextCluster = readFATEntry(currentCluster);
e = readFATEntry(clusterNum);
return (readFATEntry(clusterNum) == PCF_BADCLUSTER32);
return (readFATEntry(clusterNum) == PCF_FREECLUSTER);
return (readFATEntry(clusterNum) == PCF_LASTCLUSTER32);
extern int32_t readFATEntry(int32_t currentCluster);