DRAGON'S LAIR / SPACE ACE ENGINEERING MODE
Written by Jeff Kulczycki - 20 March 2000

INTRODUCTION

Engineering mode was designed to let the engineers play-test a scene without having to play through the whole game.
This document will show you how to get into engineering mode and how to use it.

THEORY OF OPERATION

When the engineering mode is enabled, one of the DIP switch banks on the game's main PCB will
act as the scene select according to the charts below.

  NOTE: All DIP switches discussed in this document must be switched while the game's power is turned off!

  NOTE: All DIP switches are numbered from 0-7, as printed in white on the main PCB (not 1-8 on the plastic switch banks.)

DRAGON'S LAIR ENGINEERING MODE

Dragon's Lair's engineering mode is activated by turning DIP switch A3 OFF while the power is off.
Use DIP switch bank B to select the scene to play, per the chart below.
The attract mode will begin normally. Insert coins (if not set to free play) and press start.
The game will jump immediately to the selected scene. The only way to exit engineering mode
is to turn off the game and reset the DIP switches.

With the Dragon's Lair revision F and F2 ROMs, you will have a problem using engineering mode.
These ROM revisions assign DIP switch B3 to select which laserdisc player model is being used,
and this curtails your ability to use switch B3 to make your scene choice. Without changing your
laserdisc player setup, you have to leave B3 set to its working position.

Dragon's Lair scene selection, via DIP switch bank B:

B7 B6 B5 B4 B3 B2 B1 B0 Scene
ON ON ON ON ON ON ON OFF Tentacles & Halberd
ON ON ON ON ON ON OFF ON Mist Room (snakes)
ON ON ON ON ON ON OFF OFF Fire Pit (ropes)
ON ON ON ON ON OFF ON ON Yellow Brick Road (pool of water / spider)
ON ON ON ON ON OFF ON OFF Wizard's Chamber (Cauldron Wizard / slime)
ON ON ON ON ON OFF OFF ON Spiral Staircase (Giddy Goons)
ON ON ON ON ON OFF OFF OFF YMCA Room (flattening stairs)
ON ON ON ON OFF ON ON ON Forge (Smithee)
ON ON ON ON OFF ON ON OFF Socker Boppers (Grim Reaper)
ON ON ON OFF ON ON ON ON Breathing Door (wind room)
ON ON ON OFF ON ON ON OFF Bower (closing wall)
ON ON ON OFF ON ON OFF ON Fire Room (lightning / bench over exit)
ON ON ON OFF ON ON OFF OFF Flying Barding
ON ON ON OFF ON OFF ON ON Chapel (Robot Knight / checkered floor)
ON ON ON OFF ON OFF ON OFF Mausoleum (Crypt Creeps)
ON ON ON OFF ON OFF OFF ON Catwalk (bats)
ON ON ON OFF ON OFF OFF OFF Fire Pit (ropes) (reversed)
ON ON ON OFF OFF ON ON ON Yellow Brick Road (pool of water / spider) (reversed)
ON ON ON OFF OFF ON ON OFF Giant Bat
B7 B6 B5 B4 B3 B2 B1 B0 Scene
ON ON OFF ON ON ON ON ON Elevator Floor (9 levels available)
ON ON OFF ON ON ON ON OFF Forge (Smithee) (reversed)
ON ON OFF ON ON ON OFF ON Flying Barding (reversed)
ON ON OFF ON ON ON OFF OFF Pot of Gold (Lizard King)
ON ON OFF ON ON OFF ON ON Wizard's Kitchen ("Drink Me")
ON ON OFF ON ON OFF ON OFF Mausoleum (Crypt Creeps) (reversed)
ON ON OFF ON ON OFF OFF ON Socker Boppers (Grim Reaper) (reversed)
ON ON OFF ON ON OFF OFF OFF Tilting Room
ON ON OFF ON OFF ON ON ON Throne Room
ON ON OFF ON OFF ON ON OFF Chapel (Robot Knight / checkered floor) (reversed)
ON ON OFF OFF ON ON ON ON Elevator Floor (9 levels available) (reversed)
ON ON OFF OFF ON ON ON OFF Pirates of the Caribbean (underground river)
ON ON OFF OFF ON ON OFF ON Mudmen
ON ON OFF OFF ON ON OFF OFF Knight & Light (Black Knight / horse)
ON ON OFF OFF ON OFF ON ON Boulder Trench (colored balls)
ON ON OFF OFF ON OFF ON OFF Three Caves (jagged door / geyser)
ON ON OFF OFF ON OFF OFF ON Dragon's Lair
ON ON OFF OFF OFF ON ON ON Elevator Floor (3 levels available)
ON ON OFF OFF OFF ON ON OFF Vestibule (small crumbling room)
B7 B6 B5 B4 B3 B2 B1 B0 Scene

 


SPACE ACE ENGINEERING MODE

Space Ace's engineering mode is activated by turning DIP switch B3 ON while the power is off.
This function is not documented in the manual, which marks switch B3 as "Not used."
Use DIP switch bank A to select the scene to play, per the chart below. Because of Space Ace's style of game play, the scene will not always start over at the beginning.
You will not have the problem with the laserdisc player selection mentioned above with the Dragon's Lair revision F/F2 ROMs, because Space Ace uses DIP switch B0 for player selection.
To exit engineering mode, turn off the game and reset the DIP switches.

Space Ace scene selection, via DIP switch bank A:

A7 A6 A5 A4 A3 A2 A1 A0 Scene
ON ON ON ON ON ON ON ON Attract Mode
ON ON ON ON ON ON ON OFF "There's Borf's Ship"
ON ON ON ON ON ON OFF ON First Flight: Asteroids
ON ON ON ON ON ON OFF OFF First Flight: Asteroids (reversed)
ON ON ON ON ON OFF ON ON Space Station: Power Cylinders / Video Guards
ON ON ON ON ON OFF ON OFF Space Station: Power Cylinders / Video Guards (reversed)
ON ON ON ON ON OFF OFF ON Space Station: Security Spheres
ON ON ON ON ON OFF OFF OFF Space Station: Security Spheres (reversed)
ON ON ON ON OFF ON ON ON Space Station: Space Pups / Robots
ON ON ON ON OFF ON ON OFF Space Station: Space Pups / Robots (reversed)
ON ON ON OFF ON ON ON ON Space Station: Trash Masher
ON ON ON OFF ON ON ON OFF Space Station: Trash Masher (reversed)
ON ON ON OFF ON ON OFF ON Second Flight: Dogfight
ON ON ON OFF ON ON OFF OFF Second Flight: Dogfight (reversed)
ON ON ON OFF ON OFF ON ON Speed Tunnel: Le Grins
ON ON ON OFF ON OFF ON OFF Speed Tunnel: Le Grins (reversed)
A7 A6 A5 A4 A3 A2 A1 A0 Scene
ON ON ON OFF ON OFF OFF ON Shag's Jungle
ON ON ON OFF ON OFF OFF OFF Shag's Jungle (reversed)
ON ON ON OFF OFF ON ON ON Hexter
ON ON ON OFF OFF ON ON ON Hexter (reversed)
ON ON OFF ON ON ON ON ON Motorcycle Chase
ON ON OFF ON ON ON ON OFF Motorcycle Chase (reversed)
ON ON OFF ON ON ON OFF ON Maze of Madness / Water Tank
ON ON OFF ON ON ON OFF OFF Maze of Madness / Water Tank (reversed)
ON ON OFF ON ON OFF ON ON Final Battle with Borf
ON ON OFF ON ON OFF ON OFF "Which Way?"
ON ON OFF ON ON OFF OFF ON "Which Way?" (alternate)
ON ON OFF ON ON OFF OFF OFF First Flight: Asteroids (shortened) (no Dexter/Kimmy banter)
ON ON OFF ON OFF ON ON ON First Flight: Asteroids (shortened) (reversed)
ON ON OFF ON OFF ON ON OFF Space Station: Security Spheres (shortened) (1st sphere cut)
ON ON OFF OFF ON ON ON ON Space Station: Security Spheres (shortened) (reversed)
ON ON OFF OFF ON ON ON OFF Maze of Madness / Water Tank (shortened) (no maze)
ON ON OFF OFF ON ON OFF ON Maze of Madness / Water Tank (shortened) (reversed)
A7 A6 A5 A4 A3 A2 A1 A0 Scene



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