def METHOD_NAME(self):
    '''
    If a 32bit linear start address is defined for this file,
    return it.  Returns None if the 32bit entry point extension
    is not present.
    '''
    evas = []
    for fname, chunk in self:
        ctype = int( chunk.recordtype, 16 )
        if ctype == IHEX_REC_STARTLINADDR:
            evas.append(int( chunk.data, 16 ))
        elif ctype == IHEX_REC_STARTSEG:
            startcs = int( chunk.data, 16 ) >> 16
            startip = int( chunk.data, 16 ) & 0xffff
            evas.append((startcs << 4) | startip)
    return evas