Re: Torpedo Fire by SSI

["Michael J. Mahon" <mjmahon@aol.com>]

heuser.marcus@freenet.de wrote:
> On Aug 1, 4:00 pm, "RetroC64" <stede...@yahoo.com> wrote:
> > As for the game, I select the Introductory Scenario (number 1 on the list)
> > Play against the computer (C)
> > Novice Rules or something (Y)
> > Then the game starts. On my first turn I type (o) for order
> > then choose convoy (C)
> > then type MC090 or MC180
> > type (E) to execute
> > and BAM! Error.
>
> I get a "DIVISION BY ZERO ERROR IN 8010".
>
> It then crashes to the prompt at which point I type LIST
> & enter. Then the game interestingly resumes and I have a
> two-player game - not a human vs. computer game anymore...

Sounds like the "RUN flag" is on and interactive commands
are being treated like "RUN".


> You can change their course *after* you issued course change
> commands to the escorts - I had no crash after a "MCC030" was
> issued following the above sequence. In fact the convoy turned
> on the map with the ships now being drawn angled, too.

This has all the earmarks of a variable that is not properly
initialized before use on the "MC" path, but is on the "E" path.

It shouldn't be too hard to capture the Applesoft program--just
its RAM image (probably starts at $801 and ends at ($AF.$B0)).
Then it can be BLOADed into RAM with a normal DOS and SAVEd and
LISTed, etc.  Most emulators will let you capture RAM, right?

Of course, making it work will involve getting all the M/L programs
in the right places, too, but all in all, a fun evening.  ;-)

-michael

AppleCrate: An Apple II "blade server"!
Home page:  http://members.aol.com/MJMahon/

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