[stella] Cosmic Ark disassembled

Subject: [stella] Cosmic Ark disassembled
From: Thomas Jentzsch <tjentzsch@xxxxxx>
Date: Tue, 23 Apr 2002 20:01:52 +0200
after a long break, here is another disassembly from me: Cosmic Ark.

I didn't find to many new things, except that this is the first game I
know, that uses "fractional addition techniques". This was required by
the Stella Programmer's Guide (see page 16) to make conversions from
NTSC to PAL much more accurate.

I had a quick look at a few other Imagic games, and they seem to have
used this technique generally. Compared to the simple conversions of
Activision (or my own), this is IMO a major quality improvement.

And Cosmic Ark game was originally planed to have a non-cooperative two player

See the my notes at the top of the source for more details.

Have fun!
Thomas Jentzsch         | *** Every bit is sacred ! ***
tjentzsch at web dot de |

Attachment: CosmicArk.zip
Description: Zip compressed data

Current Thread