Do_ECC(uint16_t *banksTable, void *buffer, void *spare, int page, int arg4) {   //sub_18017304
	int ret_FILRead;

	if (arg4!=0) {
		arg4=0;
	}
	if (buffer==0)
	    {return (ERROR_ARG);}
	if (spare==0)
		{return (ERROR_ARG);}
    int numpage = 0;
	while (page > numpage) {		// while1
		int numbank = 0;
		while (NANDData.banksTotal > numbank) {   // while2
			ret_FILRead = FIL_Read_Real(numbank, (banksTable[numbank] + numpage),buffer,spare,1,1)
			if (ret_FILRead > 1) {
				return (ret_FILRead);
			}
			else {
				spare = spare + 12;	// 12 bytes?
				buffer = buffer + NANDData.bytesPerPage;  // or eccBufSize?
			}
		    numbank++;
		}		// end while2
		numpage++;
	} // end while1

	return 0;
}

// function sub_18017296
sub_18017296 (uint16_t *banksTable, int *pageTable, void *buffer, void *spare, int arg4, int arg5)
	int ret_FILRead;

	if (arg5 != 0) {
		arg5 = 0;
	}
	int numdata=0;
	while (arg4 > numdata) {
	ret_FILRead = FIL_Read_Real(banksTable[numdata],pageTable[numdata],(buffer+numdata*NANDData.bytesPerPage),(spare+12*numdata),1,1);
	if (ret_FILRead > 1) {return (ret_FILRead);}
	numdata++;
	}
	return 0;
}