Not sure why you had to use those offsets. Chip / file address should be 000 to FFF on the 2732 or 2732A. Otherwise, reading the chip is the same as programming in terms of addressing. The most consistent method I know is to read the entire address range then view the file in a hex editor. If you see the chip "repeating" at the 1/2 or 1/4 point then you know the actual file size is a fraction of the chip size.