Welcome to the official Williams/Bally "old Bally" software
Throughout history, early Bally software has been a confusing mess of
jumper charts and arcane part numbers. We've set out to fix all that
with a new and improved confusing mess of jumper charts and arcane part
numbers! (Actually, we hope it's not quite so confusing as before.)
The goal of this software repository is to have everything needed for
a specific game all located together in a single archive file per game.
This includes the latest known software for MPU and sounds, the correct
jumpers to install, and any other important notes.
A few shortcuts have been taken to try to minimize the complexity.
All early games are assumed to be using an AS-2518-35 MPU board, even if
the game originally shipped with the AS-2518-17. All jumper settings
assume you are programming all new chips in EPROM form; they are not
correct for games using any of the original masked ROM chips. All MPU
applications that use a 4K chip assume a 2732, because those are far
easier to obtain now than the 2532's originally specified by Bally in
their jumper charts. (Sound boards that use 4K chips list jumpers for
both types, since the original chips are often 2532's which could be
reprogrammed and reused on the same board.)
In the various game archives, the filename extensions indicate the
size/type of ROM to burn:
.123 82S123/74S188 (32x4 PROM)
.474 74S474/7461 (512x8 PROM)
.716 2716 (2Kx8 EPROM)
.532 2532 (4Kx8 EPROM)
.732 2732 (4Kx8 EPROM)
To cover the needs of those who need more general information, we also
have the following text files for download:
contains this introduction, plus general jumper info
all of the individual game README files in one file
the individual game README info in table format
We also have some original Bally service information in image format,
like the nearly mythical F.O.
597, which describes how to modify an early -17 MPU to drive the
electronic sound board in later games.
Our attempts at ensuring the quality of this data include: -- Using
original Bally data, cross-checked against other sources
-- Using the latest revision that could be found
-- Spot-testing on several older games
While we're confident of the quality of this data, understand that we
simply cannot test all of this data ourselves. We don't have all of the
games, nor enough hours in a day. We welcome feedback on any errors; any
newer versions out in the field (usually, but not always, identified by
a higher value for "YY" in the part number format of
"XXX-YY U#"); any ways to present the data more clearly; and
any ways to make this repository more useful.
BIG DISCLAIMER SECTION
WMS is making this historical data available for the benefit of fans
and owners of its older pinball machines. It is not WMS policy to
officially support games this old, but we like to help out where we can.
Because of the age of this data and the lack of facilities for
exhaustive testing, WMS can make no guarantees whatsoever about its
correctness. Use it for what it's worth, but if it doesn't fix your
machine, don't call us. If it breaks your machine, don't call us. If it
makes you gain weight and gets your dog run over and makes your pickup
truck rust, you may well have a career in country music, but still don't
call us. In other words:
WMS ASSUMES NO LIABILITY OF ANY KIND FOR THE ACCURACY OF THIS DATA, OR
LACK THEREOF. IT IS PRESENTED AS-IS, WHERE-IS, AND WITHOUT WARRANTY.
This data is intended for use by those who have the technical
knowledge and skills to make use of it. It is assumed that you can
program EPROMS and change soldered-on jumpers and all of the other
things necessary for this kind of work. If you don't know if you have
the necessary skills, trust us you don't. Find someone else to do the
work for you, it will be much cheaper in the long run than repairing a
damaged board. In other words:
WMS ASSUMES NO LIABILITY OF ANY KIND FOR DAMAGES INCURRED IN THE USE
OF THIS DATA. WMS CANNOT OFFER ANY SORT OF TECHNICAL SUPPORT TO THOSE
WANTING TO USE THIS DATA. IF YOU DON'T KNOW HOW TO USE THIS DATA
PROPERLY, DO NOT USE IT AT ALL.
(We don't like shouting, but it's important that this nice gesture on
our part not end up being something we regret doing. Use it, be happy,
and we'll keep doing nice things like this!)