Re: WildCard By Central Point Question

["Bryan Parkoff" <BParkoff@satx.rr.com>]

    I understand that it is SpiraDisc.  How does SpiraDisc block Apple II
users from reading data using nibble editor.  Is it true that we have to
read 6502 code (assembler) from the track 0 sector 0 before we can
understand what 6502 code (assembler) manipulate with the disk?
    Where can I obtain the information like CompuList #52?  I did check
www.apple2.org.za, but it does not provide enough information.

--
Yours Truly,

Bryan Parkoff
BParkoff@satx.rr.com
"Andy McFadden" <fadden@fadden.com> wrote in message
news:e3c0a.64233$Ik.2606130@typhoon.sonic.net...
> Bryan Villados <news002@macgeek.org> wrote:
> > From my recollection of using this card, 100-percent of the program
you're
> > copying needs to be resident in RAM. For example, Castle Wolfenstein
> > constantly read the diskette throughout the play, so WildCard won't copy
it
> > completely. Games like Hard Hat Mack and other single-loading stuff can
be
> > copied just fine. Once you have the program cracked to a diskette,
> > theoretically you can clean up the code, bleeping out all the unused and
> > unnecessary stuff, and save the program into a single binary file so you
can
> > just BRUN it instead of booting off the disk.
>
> Some single-load programs that won't work include EDD, Frogger, and Maze
> Craze Construction Set.  The latter two use the "uncopyable" Spiradisc,
> which is nearly impossible to copy with a nibble copier, and includes a
> system scan to keep you from running the image on anything but an
identical
> machine.  (See COMPUTIST #52 (??) for a crack.)
>
> EDD trashed its own stack pointer whenever it was waiting for input, so
> the bytes pushed onto the stack by the interrupt would corrupt the return
> address on the stack.  You had to hit the NMI button while it was "moving"
> to get a clean copy.
>
> --
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