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Bob Withers
You found it! Bob Withers'CoCo Graphics Adventures with Source Code and Maps! Install the VCC CoCo Emulator to play these CoCo games Online!
Welcome to my little space on the web. The picture above may appear a little fuzzy but it is actually crystal clear. I'm just a fuzzy person!
Once upon a time, in a previous life, my friend, Steve O'Dea and I developed a series of six graphic adventures for the Radio Shack Color Computer. These adventures were marketed by Mark Data Products and were considered rather revolutionary for their time. The adventures stored all images compressed in memory and were usable from cassette based systems as well as from diskette. These games were all written in MC6809 assembly language and assembled with the fantastic Micro Works MACRO-80C assembler. To this day this is one of the best assemblers I've ever used.
A little known fact is that these adventure games were also ported to the IBM/PC using a CGA graphic screen. These versions entered the market too late and did not take full advantage of the available hardware and were not widely distributed.
You can read an interview with me about the CoCo adventure days here. Walkthroughs of all the games have been compiled by Ricardo Mendonça Ferreira and are available here. While developing these games I would always draw a game map to work from. This map would assign a number to each room in the game and identify direction and object placement. Sadly the maps for Trekboer and Vortex Factor have been lost.
NOTICE before blindly grabbing all of these files: All Coco binary files have been replaced with Robert Gault's modifications that save and load game positions from disk rather than tape as in the originals. The source code files are the originals that use tape. Also, a missing source file called ASCLNO.ASM has been recreated so the games can be assembled correctly.
NOTICE: Like MANY CoCo 1 and 2 games, these games make use of the artifact color set which causes red and blue colors to appear on a composite monitor even though only black and white pixels are actually used. Most CoCo emulators generate the same artifact colors while a real CoCo allows you to hit RESET and cause red and blue to be swapped for the generated colors. Either way, you'll have to hit ENTER to get past the artifact color selection screen you see at the start of some of these games.
Countless legends tell of a magnificent Pot of Gold and enormous wealth hidden by leprechauns at the end of the rainbow. Many have attempted to find the marvelous treasure but success has eluded tham and it remains hidden to this day. Because you are a dedicated adventurer, eager to face danger and challenges for great rewards, you have determined to search for that fabled Pot of Gold and succeeded where others have failed.
This game was originally named Seq Quest but was renamed after several threatening letters from lawyers representing ActiVision. Get your shark repellant and scuba tanks ready! The underwater scenes in this adventure are unforgettable. You'll run into a pirate, a mermaid, and some hungry sharks in this colorful and unique treasure hunt.
A valuable museum treasure has been stolen; can you recover it? CALIXTO ISLAND is a challenging puzzle with and occasional twist of humor. You'll visit a laboratory, a Myan pyramid and you'll meet crazy Trader Jack - all in living color and exciting detail.
Encounter the forces of black magic as you roam around an old 18th century monastery. See all the evil locations in this spooky adventure in full hi-res detail. If you like suspense, you'll love searching out and destroying the evil in this classic tale.
This exciting adventure begins abord the starship TREKBOER in the 21st century. Life on Earth is threatened by a deadly virus and your mission is to search the frontiers of space for the cure that will save mankind from disaster. But how? Where? The name of your starship provides the first clue.
What is it? What secrets does it hold? The seeker of treasures through time and space must find out! From the coliseum of ancient Rome to the futuristic world of tomorrow ... join us in this unforgettable odyssey.
