Just to clarify: 1. These are 40pin DIP Plastic packaged Chips 2. These are CPU chips, not eproms 3. These are not free. We have to pay someone for them. I am doing someone a favor and offering them to people who would most appreciate them. These are the same chips used on the COSMAC ELF. If you are repairing an old unit, or building one of the new clones... You might want some of these. We only have a limited amount of chips. Once these are gone, I can't get any more. Al