Bugman

I collect and play any kind of old D&D based games. I came across an
interesting variant on Asimov called Dungeon! by TSR. It is a nibble
image that works fine on emulators. I much prefer to play these on
the real machine. However, it is always a challenge to get nibble
images back to a real apple. It still has copy protection that I
cant
get around. It seems like a pretty common altered DOS type of
protection. I cant find any computist instructions for it. I did
find one that was an IOB for a couple of TSR games (including
dungeons, not dungeon!).

Does anyone have a deprotected version of this game, or know how to
crack it?

Toinet

On 5 sep, 16:26, Bugman <btt071...@gmail.com> wrote:
> I collect and play any kind of old D&D based games. *I came across an
> interesting variant on Asimov called Dungeon! by TSR. It is a nibble
> image that works fine on emulators. *I much prefer to play these on
> the real machine. *However, it is always a challenge to get nibble
> images back to a real apple. *It still has copy protection that I
> cant
> get around. *It seems like a pretty common altered DOS type of
> protection. *I cant find any computist instructions for it. *I did
> find one that was an IOB for a couple of TSR games (including
> dungeons, not dungeon!).
>
> Does anyone have a deprotected version of this game, or know how to
> crack it?

It is a very interesting double on-disk protection :-)

The data marker changes depending on the track value OR-ed with the
ROM. Whenever you change track, $BE8B jumps to $BFC8 which calls $AE10
which calls $ADE0.
The second protection is based on nibble count of value $DD.
I suspect there is a third one based on the file name. I need to dig
that out.

By default, tracks 0 to 4 are copyable. Tracks 5 to $22 are protected.
With an rewrite of the on-disk protections, I have $12 good tracks out
of $22.

Let's go on...
antoine

Toinet

On 5 sep, 16:26, Bugman <btt071...@gmail.com> wrote:
> I collect and play any kind of old D&D based games. *I came across an
> interesting variant on Asimov called Dungeon! by TSR. It is a nibble
> image that works fine on emulators. *I much prefer to play these on
> the real machine. *However, it is always a challenge to get nibble
> images back to a real apple. *It still has copy protection that I
> cant
> get around. *It seems like a pretty common altered DOS type of
> protection. *I cant find any computist instructions for it. *I did
> find one that was an IOB for a couple of TSR games (including
> dungeons, not dungeon!).
>
> Does anyone have a deprotected version of this game, or know how to
> crack it?

Yes both

Crack @ http://www.brutal-deluxe.fr/crack/DUNGEON.DSK
Explanations (later tomorrow) @ http://www.hackzapple.com/phpBB2/viewforum.php?f=13

antoine

Bugman

Thanks!

bloomer_au

On Sep 6, 11:06*am, Bugman <btt071...@gmail.com> wrote:
> Thanks!

Wow, I didn't even realise this boardgame had been converted to the
Apple II. I still have my 2nd edition of the TSR boardgame.

I just tried the game and it looks like a verbatim version of the
boardgame. Same map, exact same contents in the decks of level cards,
same character classes and distribution... in that sense, probably the
only reason to play it is if you don't have the boardgame, because
it's more fun to roll real dice and handle the cards

But again, nice work Antoine, and finding out about this game was an
unexpected surprise, so also thanks Bugman.

- Wade

Toinet

On 6 sep, 03:06, Bugman <btt071...@gmail.com> wrote:
> Thanks!

You're welcome.

The explanation of the crack is @ http://www.hackzapple.com/phpBB2/viewtopic.php?t=294

Antoine