Thayer's Quest - Owners Manual (37 pages)
Thayer's Quest - Schematics (7 pages)
Thayer's Quest - Electrohome NTSC Specifications and Pinouts
Thayer's Quest - Wells Gardner NTSC Pinouts
Thayer's Quest - Control Panel Pinout
Thayer's Quest - Coin Door Pinout
Thayer's Quest - DIP Switch Settings

Thayer's Quest - ROM Images
Thayer's Quest - ROM Images (alternate) (23.8K)
Thayer's Quest - ROM Images (swearing ROM)

Thayer's Quest - Virtual Library showing images and information of the major components.

Compatible Laser Disc Players - Pioneer PR-7820, Pioneer LD-V1000

Pioneer PR-7820 - General Adjustment Manual (20 pages)
Pioneer PR-7820 - Programming Reference Guide (30 pages)
Pioneer PR-7820 - Programming Users Guide (13 pages)
Pioneer LD-V1000 - Operating Instructions (7 pages)
Pioneer LD-V1000 - Interface Guide (24 pages)
Pioneer LD-V1000 - Service Manual (81 pages)
Pioneer LD-V1000 - Schematics (27 pages)
Pioneer LD-V1000 - Cleaning optics (1 page)
Pioneer LD-V1000 - Changing laser tube (3 pages)
Pioneer LD-V1000 - Laser Disc Player Conversion Manual (8 pages)

Different EPROM for LD-V1000 - This EPROM is needed if you are using an LD-V1000 that was previously in a Badlands.  You will need to change the EPROM inside the LD-V1000.  Download the Pioneer LD-V1000 EPROM here.

Conversion Cards - LaserCon is a Laser Disc player conversion card for Thayer's Quest.  You can replace any of the above mentioned Pioneer laser disc players with newer supported Pioneer laser disc players.  For more information, check out the LaserCon page.

The LaserAce conversion card will let your laser disc game use a variety of different laser disc players.  Unfortunately these cards are no longer in production, but can still be found on eBay or the D-L-P Classifieds occasionally.

Kit Information - Thayer's Quest was released as a conversion kit only.  The Dragon's Lair wiring harness, Laser Disc interface ribbon cable, and Score Board interface ribbon cable would plug directly into the Thayer's Quest main logic board.

Keyboard Emulator - Warren Ondras hits the laser disc game hacking scene with his first hack for the D-L-P.  "TQkey" is a keyboard emulator that allows you to use a standard computer keyboard in place of the ultra rare Thayer's Quest keyboard.  Definitely check out Warren Ondras's TQKey.

Swearing ROM - Hear those bad words that the game would never say.  See Jeff Kulczycki's Swearing Rom Hack.

LD-V1000 Boot Switch - A simple inexpensive way to build a switch that issues a play command to your LD-V1000 or LD-V1001.  Check it out here.

Easter Eggs - See some of the things the programmers / animators left in the game.  Check out Laser Disc Game Easter Eggs.