If you cannot obtain the software:
The TOP3000 can operate in two power modes: Top3000 Universal Programmer Software Download
With proper software installation, careful device handling, and attention to voltage requirements, your TOP3000 programmer will serve as a reliable workhorse for years of programming projects. As one satisfied user summed it up: "I use a TOP3000 all the time; once you get it working it's quite versatile and having enough pins to do 42-pin EPROMs without an adapter is very nice". If you cannot obtain the software: The TOP3000