[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Copy II Plus would be illegal today
Matthew Russotto wrote:
>There were a few cards of this type. Some even saved the contents of
>memory to their own on-board memory.
Any card that wanted to capture _all_ of memory has to have some
on-board memory, since it's impossible to communicate with the
operator of the Apple without changing Apple memory in some way--
the screen memory comes immediately to mind. And a number of
programs put critical code/data in screen memory while running just
to thwart simple IRQ attacks.
-michael
Email: mjmahon@aol.com
Home page: http://members.aol.com/MJMahon/