OTP is just normal EPROM without the window. They're the same dies, so they are no less vulnerable than the windowed EPROM parts. > My top 3 choices are: > 1- OTP > 2- OTP > 3- One Time Programmable (equiv of a prom) > the memory is nonerasable > John --- Peace, William Kitchen bill@iglobal.net The future is ours to create.