Welcome to the official Williams/Bally "old Bally" software repository!
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:
bally_read1st.txt: contains this introduction, plus general jumper info
bally_readall.txt: all of the individual game README files in one file
bally_matrix.txt: 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!)
CALL US : 408-426-4510
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