THAYER'S QUEST UNCENSORED ROM HACK
Developed by Jeff Kulczycki - 6 September 2000
If you're familiar with Thayer's Quest, you know that at the start of the game, you are asked to type in your name. The game speaks it back to you using speech synthesis from the SSI 263 voice chip. For the mischievous teenagers of the time, this was a chance to have some fun. However, the programmers were one step ahead of those vulgar youths and included a list of "bad words" in the code that the game would NOT say. We thought it would be funny to have Thayer's Quest say anything that was typed in. This document will explain what you need to do to make your Thayer's Quest say anything you want. To see the list of "bad words" that were in the code, click here. (WARNING: not for the easily offended)
Modified ROM Image (see
THEORY OF OPERATION (and other notes)
Thayer's Quest uses two different ROMs. (U1 and U33) U1 requires a 2764 EPROM and is on the small satellite board that plugs into the motherboard. Image U1 contains info for the game such as object names, hints, frame numbers, etc. U33 requires a 27256 EPROM and is located near the center of the lower board. Image U33 contains programming for the game such as keyboard input, speaking, dropping / taking items, timers, etc.
In this hack we simply disable the routine in image U33 that checks for the list of "bad words" and we have ourselves a game that will say any word typed in.
You can view the disassembled code for Thayer's Quest here.
Simply burn the attached ROM code into a 27256 EPROM and plug it in to U33 located in the center of the lower board. This does not plug into the small satellite board.
Documentation is included in the download.
DOWNLOADTQHACK01.ZIP NOW! (36.7k)
The above is believed to be correct, and works fine for the author. No one is forcing you to do this. If you break your game, it's your fault!
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