game
icon
title Thayer's Quest
set name thayers
manufacturer RDI Video Systems
year 1984
genre Not Classified (hof)
category Not Classified (hof)
driver status preliminary
driver source thayers.c
snapshots Mr. Do: artwork / PS: in game | title
zoom | shrink
rating

57.5% after 15 votes
 
clones Thayer's Quest (Alternate Set)
display
colour emulation good
palette 256
display type raster
orientation horizontal
resolution 704x480
frequency 59.940052Hz
sound
sound emulation preliminary
channels stereo
controls
players 1
nplayers ???
controls other
buttons 0
coin slots 2
hardware
cpu Z80 @ 4MHz
cpu COP421 @ 2MHz
audio Custom
data
version added .118u2
last change(s) none
roms
name size crc set flags sha1
tq_u33.bin  32768  82df5d89  thayers    58dfd62bf8c5a55d1eba397d2c284e99a4685a3f 
tq_u1.bin  8192  e8e7f566  thayers    df7b83ef465c65446c8418bc6007447693b75021 
tq_cop.bin  1024  6748e6b3  thayers    5d7d1ecb57c1501ef6a2d9691eecc9970586606b 
CHD
name md5 set
thayers    thayers 
cabinet art
art no cabinet, marquee, flyer, control panel or PCB images found
additional information
info 0.118u2 [Andrew Gardner]

TODO:
  • Dump Laserdisk
WIP:
  • 0.127u3: Added Custom sound.
  • 0.127: Aaron Giles added DISK_REGIONS to all laserdisc drivers. Changed visible area to 704x480 and VSync to 59.940052.
  • 0.125u5: Thayer's Quest changes [Curt Coder]: Cleaned up driver. Added LED layout from Dragon's Lair. Mapped keyboard and dips correctly. Added laser disc drive selection. Fixed Z80-COP communications. Figured out ports from disassembly. Added cart presence detection logic. Fixed SSI-263 timings, service mode works now. Changed to use COP421 (2MHz). Added dipswitches 'Service Mode' and 'Unused'.
  • 0.125u4: COP4xx updates [Curt Coder]: Added HALT opcode and halt mode to the COP410. Added Microbus support, clock divisor selection and CKO mode selection to the COP420. Changed Thayer's Quest keyboard interface to at least slightly resemble the schematics.
  • 0.118u3: Andrew Gardner added clone Thayer's Quest (Alternate Set). Andrew Gardner added counter emulation to the COP420 CPU core. Hooked it up to Thayer's Quest and added an alternate set.
  • 0.118u2: Andrew Gardner added Thayer's Quest (RDI Video Systems 1983).
Romset: 41 kb / 3 files / 22.6 zip
history Thayer's Quest (c) 1984 RDI Video Systems.


This is a fantasy title, and has unbelievable graphics (hand drawn animations pulled from a laserdisc). You guide young Thayer on a quest through the three kingdoms. You are supposed to defeat Sorsabal The Twisted at the end of the game. This game is far different from most laserdisc games. It is not a 'tweak' game, it works more like a 'Choose Your Own Adventure Story'. It doesn't always tell you all your available options, but you do not have to memorize complex, precisely timed movements like you do in "Dragon's Lair". Once you know what to do in a given Thayer's Quest scene then you will be able to do it everytime. To make up for this ease of memorization the programmers decided to make the game automatically deduct a life every so often, to keep the player from being able to play forever on a single quarter (which was a big problem with "Dragon's Lair").


- TRIVIA -


This game was not finished! Thayer's Quest includes only 3 kingdoms ('Weigard', 'Illes' and 'Iscar') of the 5 Kingdoms ('Far Reaches' and 'Shadoan' are missing). The game was simultaneously produced for the RDI Halcyon home system in 1984. The Halcyon's Thayer's Quest laser disc is double sided and it contains a great deal of material not found on the coin-op version disc.


Thayer's Quest was released only as a conversion kit for "Dragon's Lair" and "Space Ace". The kit replaced a lot of the original hardware, and included new side graphics (which consisted of a huge RDI logo, they didn't mention the game on the side, because they planned to release a whole line of games on the Thayer's Quest hardware, but those other games were never made). This game does not have a joystick at all. Instead it uses a keyboard for control (This was the first arcade game ever to have a qwerty keyboard). In an effort to save several dollars per unit, RDI decided to use a membrane style keyboard instead of a more sturdy switch based one. That was a really bad decision, the keyboards on these games do not last, they are easily damaged, and are not of high enough quality to use in an industrial coin-op product. Thayer's Quest also used a laser disc player, it could use either the Pioneer PR-7820, or the Pioneer LD-V1000.


- TIPS AND TRICKS -


* Humor : When prompted to type in your name, do nothing. After intervals of one minute or so, the game speaks out saying things like 'Do not be shy, enter your name', 'Have you gone to the toilet?', 'Do not be a stranger now, enter your name', 'Look lively now' and a whole host of other funny comments.


- SERIES -
  1. Thayer's Quest (1984)
  2. Kingdom - The Far Reaches (Sega 32X CD [Unreleased Prototype])
resource links view in MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view in arcade-history.com
view in KLOV
view in The Arcade Flyer Archive
cheats
cheats
code comments
60000000:0000:00000000:00000000  ------------------------------:REASON 12
60000000:0000:00000000:00000000  This game hasn't even been
60000000:0000:00000000:00000000  looked at due to the sheer
60000000:0000:00000000:00000000  size of the ROMs/CHDs that
60000000:0000:00000000:00000000  the game is likely to need
60000000:0000:00000000:00000000  to run correctly. The game
60000000:0000:00000000:00000000  may not work even if all
60000000:0000:00000000:00000000  the files are available and
60000000:0000:00000000:00000000  obtainable. Please search
60000000:0000:00000000:00000000  the cheat forums before
60000000:0000:00000000:00000000  posting ANY cheat requests
60000000:0000:00000000:00000000  or commencing cheat finding
60000000:0000:00000000:00000000  ------------------------------:REASON 12
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