Re: Mouse card --- Can EPROM go Bad?

[david@uow.edu.au (David Wilson)]

Rubywand <rubywand@swbell.net> writes:
>     Yes, but, I'm fairly sure that some of these ROMs are no-window
>versions of PROMs. Supposedly, they are programmed in the same way and
>can forget, too. Other kinds of ROMs have more durable programming.

These are known as OTP PROMs for One-Time-Programmble.

>     It seems like a good idea to start archiving ROMs and PROMs used on
>the Apple II motherboards and cards like RamFAST. (A prommer can read
>the contents which can be stored on disk.)  When ROMs start to crater,
>users could get a PROM replacement without a lot of hassle.

Been there, done that. I think I have almost all the ROMs in my Apple //
collection backed up in my UNIX account. What I should do is burn them all
onto a CD-R disc.
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia  david@uow.edu.au