Newsgroups: sci.electronics
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: 2764 UVEPROM.
Message-ID: <1990Feb24.225946.13708@utzoo.uucp>
Organization: U of Toronto Zoology
References: <2446@loral.UUCP>
Date: Sat, 24 Feb 90 22:59:46 GMT

In article <2446@loral.UUCP> miller@loral.UUCP (BIG DAVE) writes:
>Does anyone know a way of protecting the data that's been stored in a 2764, 
>8KX8, EPROM ?. Is there a way of safegarding data stored in such devices 
>once one gives the device to someone else ?. I read the spec sheets and found
>no provisions for 'security bits', ala PALs...

Um, how could such a protected EPROM function?  The *purpose* of memory
chips is to yield their contents on demand.  If a snooper can't read your
EPROM, the CPU that is supposed to run code from it can't either.
-- 
"The N in NFS stands for Not, |     Henry Spencer at U of Toronto Zoology
or Need, or perhaps Nightmare"| uunet!attcan!utzoo!henry henry@zoo.toronto.edu