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Pinball & Video ROM Chips & Software Upgrades
Replacement, upgrade, and custom revisions for most makes and models.
We have ROM chips and software upgrades in stock for most makes and models of pinball machines and several classic arcade video games. Everything from standard replacement chips, to the latest available upgrades, to special custom and "home" version ROM chips for some games.

Chips and upgrades are easy to install and come with installation instructions. You can also view installation instructions online (with pictures!) For software upgrades on late model Stern pinball games using the new SAM system, see the service bulletin on the Stern Pinball website.

Page Contents:

Pinball ROM Chips & Software Upgrades:
Shuffle Alley (Bowler) ROM Chips:

Replacement Chips & Software Upgrades:
Games are listed alphabetically by name in the chart below. Scroll down the chart to find your game. Then click on your game name for a full listing of available chips/software, and revision history (where available), and online ordering!

Looking for blank EPROM chips? See our Electronic Parts Page. (ROM chips listed below are pre-programmed for specific games).

  • Click on your game's name in the chart below to see latest software revisions, and what chips/versions are available.
  • Software versions: Version info (L-1, L-2, 5.00, A26, 1.4, etc) for individual versions is displayed where available. If no version is specified, then there have either been no updates to the ROM/game since release, or no version info exists or can be determined.
  • Revision History: (Available for most newer (1991+) games only.) If you don't see a History link for the game you are interested in, then no revision information is available on that game (never provided from manufacturer). Please do not e-mail us asking what the changes or revisions are- simply put: if it's not posted below, then we have no information on what the changes are.
  • Ordering Information:
    • Order online and pay with PayPal.com by clicking on the Order Info links below.
    • Or click here for additional ordering info.

Game Name Manufacturer Revision History Revision Listing
& Online Ordering		  

Latest Game Updates!
Just in!
Game:Manufacturer:Revision:History:Order:
ALL Sega/Stern
White Star CPU/Sound II Boards		Sega/SternSound O/S: 8 HistoryOrder
24SternVersion: 1.44HistoryOrder
BatmanSternVersion: 2.3HistoryOrder
CSISternVersion: 2.4HistoryOrder
Demolition Man Home & Profanity ROMsWilliamsVersion: H-6HistoryOrder
Family GuySternVersion: 12.00HistoryOrder
Indiana JonesSternVersion: 2.1HistoryOrder
Lord of the RingsSternGame ROM: 10.00 Display ROM: 10.00 Sound ROM: 1.01HistoryOrder
NBA PinballSternVersion: 8.01HistoryOrder
Pirates of the CaribbeanSternVersion: 6.00HistoryOrder
ShrekSternVersion: 1.41HistoryOrder
SpidermanSternVersion: 2.2HistoryOrder
Wheel of FortuneSternVersion: 5.0HistoryOrder
World Poker TourSternVersion: 14.0HistoryOrder
White WaterWilliamsGame ROM: LH-6 (home) HistoryOrder

Many more latest updates also available! If you don't see your game listed above, check the full listing (even higher above) to find out what we have available!
Home Version & Custom ROM Chips:
NOTE: Sales on all home version and custom chips ARE ALL FINAL. No refunds, returns, or exchanges will be given for ANY of these chips. We have no control over the features or changes in these chips, nor how they may differ from standard chips, so make no guarantees how they will operate in your game, or whether or not you will like them. They are purchased and used entirely at your own risk.

Chips listed here are also listed in the chart above, under corresponding game name, and may be ordered online there as well.
Game Name ROM Type (Click for more info) Price & Order Info
ALL - Late Bally
  Solid-State Games:		FREE PLAY U6 Game ROM Chip. Allows you to run your Bally game on Free Play!
For use in BMX, Centaur, Elektra, Fathom, Mr & Mrs Pac-Man, Speak Easy, Spectrum, & Vector		Order
Addams Family:H-4 (Home Version) Game ROMOrder
Converting to Addams Family GoldOrder
Addams Family Gold:H-3 (Home Version) Game ROMOrder
Attack From Mars:L1.13B (Beta) Game RomOrder
Cirqus Voltaire:L2.00H (Home) Game ROMOrder
Firepower:Game ROM Info and New Combo ROM!Order
Funhouse:L-9 Game Rom- New changes and modificationsOrder
Funhouse:L-2 Special Sound RomOrder
Medieval Madness:L1.09B (Beta) Game RomOrder
Monster Bash:L1.06B (Beta) Game RomOrder
South Park:Rev. 0.90 Prototype ROM SetOrder
Terminator 2:Prototype "Profanity" ROMsOrder
Twilight Zone:L9.4H (Home) Game RomOrder
L9.4CH (Home/Coin-op) Game RomOrder
Vector:L-2 Game RomsOrder
White Water:LH-5 Home Version ROMOrder
No returns on custom or home ROM chips- all sales are final (see NOTE above).
Pinball Diagnostic ROM Chips:
NOTE: Sales on diagnostic chips ARE ALL FINAL. No refunds, returns, or exchanges will be given for ANY of these chips. We cannot guarantee any of these chips will solve your game's problems, or even work at all in your game, if problem(s) in your game are significant or extensive. Your game must function to some extent in order to be able to use the diagnostic ROM and for it to report problems that it finds. These chips are not a "magic cure-all", but rather another tool to use in helping you diagnose and repair your pinball machine. They are purchased and used entirely at your own risk.

Chips listed here are also listed in the chart above, under "Test". You can order online through the links below, or in the chart above.
Manufacturer Games / Systems Details Price Order
Data EastAll games through Batman Forever (Aug 1995)Tests individual components/chips on MPU board and flashes LED for each successive test. LED codes indicate failed components. Includes instructions.$30.00Order
WilliamsLevel 3 - Level 6 (1977-1980)Tests board components and flashes score display and LEDs on MPU board to indicate successful test. Includes instructions.$30.00Order
WilliamsLevel 7 (1981-1984)Shows activity on score displays and LED display on MPU board during tests. Indicates failed tests via LEDs on MPU board. Includes instructions.$30.00Order

Video Game ROM Chips:

Available chips for games are listed alphabetically by game name in the chart below. Scroll down the chart to find your game. Then click on your game name for a full listing of available chips, ROM revision history (where available), and online ordering!

Looking for blank EPROM chips? See our Electronic Parts Page. (ROM chips listed below are pre-programmed for specific games).

  • Click on your game's name in the chart below to see latest ROM revisions, and what chips are available.
  • ROM versions: Version info (L-1, L-2, 5.00, A26, 1.4, etc) for individual ROM chips is displayed where available. If no version is specified, then there have either been no updates to the ROM since release, or no version info exists or can be determined.
  • Revision History: If you don't see a History link for the game you are interested in, then no revision information is available on that game (never provided from manufacturer). Please do not e-mail us asking what the changes or revisions are- simply put: if it's not posted below, then we have no information on what the changes are.
  • Ordering Information:
    • Order online and pay with PayPal.com by clicking on the Order Info links below.
    • Or click here for additional ordering info.

Game Name Manufacturer Revision History Chip List
& Ordering		  

Upgrade Pricing Information:

Two Ways to Purchase Chips:
  1. Exchange Program
  2. Outright Purchase

1) Exchange Program:

Our Exchange Program is what most of our customers use to buy new ROM chips and upgrades for their games. It's used mostly for buying new upgrades- where you buy a new chip or upgrade, replace your old one, and then send your old one back in for exchange.

How does it work?
  1. Buy a new upgrade ROM chip or USB key upgrade and install in your game.
  2. Return your old chip or the USB key for exchange (optional) and receive a deposit refund.
Most all upgrades are $10 each, after the exchange. A deposit fee of $10 to $30 is also charged for each ROM chip, or USB memory key, depending on the game and size of chip required.

The deposit fee is refundable upon exchange of your old chip or return of the USB key (see details below). So upgrades purchased on exchange end up costing only $10 each, after the exchange.

Chips returned on exchange must be:
  • Returned to us within 30 days of purchase only (no deposit refund is given after 30 days).
  • "EPROM" type chips that have a glass "window" on top (most all games use EPROM chips). We cannot accept any non-EPROM chips.
  • In good physical condition (no bent legs, or other physical damage to the chip).
  • In good working condition (no "dead" or otherwise non-functional chips can be accepted).
  • Returned by the original purchaser- we do not accept chips from, or issue exchange credit to, anyone other than the original purchaser of the chips.
USB keys returned on exchange must be:
  • Returned to us within 30 days of purchase only (no deposit refund is given after 30 days).
  • The same USB key we sent to you for the upgrade (no substitutes will be accepted).
  • In good physical condition.
  • In good working condition (no "dead" or otherwise non-functional keys can be accepted).
  • Returned by the original purchaser- we do not accept keys from, or issue exchange credit to, anyone other than the original purchaser of the chips.
As an alternative to the Exchange Program, you may instead send in your existing (old) chips, and we can send back new replacements. The only cost is $10 per chip, and return shipping/handling cost. This method of course requires that your game is inoperative while your chips are out. Most people prefer to use the Exchange Program and buy chips up front, then send old ones in later, to ensure the game has no "down time".

NOTES:

2) Outright Purchase:

Upgrades may also be purchased outright (without exchange). Most new upgrades sold outright start at $20 each. Bulk pricing is available on larger quantities of chips at the following rates:

Standard Chips Special Chips *
  • 1 - 3 chips: $20.00 ea
  • 4 - 7 chips: $17.50 ea
  • 8 or more chips: $15.00 ea
    Type A Chips:
  • 1 - 3 chips: $22.50 ea
  • 4 - 7 chips: $20.00 ea
  • 8 or more chips: $17.50 ea
    Type B Chips:
  • 1 - 3 chips: $25.00 ea
  • 4 - 7 chips: $22.50 ea
  • 8 or more chips: $20.00 ea
There is no bulk pricing available on USB keys used for update on the new Stern SAM system games.

NOTES:
Upgrade Ordering Information:
  • Online ordering is available on our web site through the PayPal.com Shopping Cart system, using your credit card or funds from your existing PayPal account. Look your game up in the chart above and simply click to order online! Shipping is calculated at check-out. For other shipping info/options, or mail-order, see our Ordering Information page.
  • For an order quote, e-mail us with your needs and we will provide you with a list of chips/upgrades required for your game(s), and a total cost with shipping. Payment can be mailed, made by phone, or sent via PayPal.com.
  • Requests for ROM images or software by e-mail will not be acknowledged- we provide software upgrades as pre-programmed chips or USB memory keys (for Stern SAM games) only. Requests for ROM images (data) will be ignored and discarded- please do not ask.
  • For additional shipping information or shipping options, see our Ordering Information page.
E-mail us if you have any questions.

Returns & Refunds:

  • All returns and exchanges are limited to 30 days from date of purchase only. Any chips or USB keys received for return/exchange after 30 days from date of purchase will be refused- no exceptions. E-mail us if you have any questions on returning any chips or USB keys.
  • Each chip or USB key we provide includes a base handling charge (min $10), which is not refundable. Any returned chips or keys accepted for refund will be refunded their purchase price, less the handling charge (shipping costs are not refundable either).
  • If you have a chip or USB key that you suspect is defective, please see the Warranty & Replacement section below, before contacting us.
  • If you ordered the wrong chip, or an extra chip that you ended up not using, we can take them back at a partial refund (as mentioned above), as long as they are returned within the 30 day period and are in same condition in which we sent them to you. We supply only what you ask us for, so we cannot be responsible if you order the wrong chip, or order something that you end up not using. Please verify your order before placing it, so you are sure of what you need.
  • There are no refunds on:
    • Custom, special-order, unique, "home version", or "test" ROM chips (see list above). All sales are final.
    • Shipping & handling costs. Customer pays for any and all shipping & handling costs, to and from.
    • Chip/USB key handling charges. This is minimum $10 per unit (as mentioned above) and is not refundable.
    • Chips that were originally sent in to us for exchange only.
    • Any chips or USB keys that are damaged in any way- internally or externally, physically or electronically.
  • See the warranty & replacement section below for information on returning or replacing chips or USB keys that may be defective.

Warranty & Replacement:

  • All chips and USB keys we provide are warranted against defects in workmanship and operation for 30 days from date of purchase only.
  • Warranty does not cover:
  • Chips or USB keys found to be defective due to a fault of our own will be replaced free of charge, or a full refund will be given (less shipping & handling costs), if returned within 30 days from date of purchase, and unit is in fact verified to be defective due to a fault of our own (see below for more info).

  • If you have received a chip or USB key from us that you suspect is defective, you can:

    1. Return the unit and we will test it to determine operability:
      • Units that are not defective will be returned to you, and an additional shipping charge will apply for the return shipping.
      • Units that are defective will be replaced at no charge, and with no extra shipping cost to ship replacement chip(s) to you.
      • Return shipping is via First Class or Priority Mail- customer pays any extra costs if overnight or Express shipping is requested.

        (All charges must be paid before unit is returned or before replacement is shipped out.)

      - or -

    2. Replacement unit(s) can be sent out to you, but a new full charge for the replacement unit(s) and shipping/handling will apply, and must be received before any units can be sent out. (Return shipping is via First Class or Priority Mail- customer pays any extra costs if overnight or Express shipping is requested.)

      A refund of total cost (including shipping cost up to amount for Priority Mail only) will be honored if original chip is returned within 30 days and is in fact determined to be defective. Only a partial refund will apply if returned units are not defective (see Returns & Refunds above.)

    NOTE: We apologize for any inconvenience this may cause, but about 99% of suspected "defective" chips and USB keys returned to us turn out to be fine, and problems end up being related to other issues in the game itself, or "bugs" in the actual software, which we have no control over. We obviously cannot afford to provide and ship replacement chips at no charge when problems so frequently lie elsewhere in the game. We thank you in advance for your understanding.

What is a ROM Chip Anyway?:

A ROM chip is a computer chip that holds the "software" or "computer instructions" inside your game. The software is what makes the game work, or play, the way it does. Just like your personal computer at home, pinball machines and video games also run on software. Instead of storing this software on a disk (like your computer does), games store their software on ROM chips.

Here is a picture of a ROM chip, as used in the Williams White Water pinball machine:



ROM chips can be easily removed and reinstalled (just like a floppy disk in your computer). Special programming equipment is used to read and write the software on the ROM chip.

You can easily update the software in your game to a newer version (if available- see chart above). Chips are easy to remove and replace- instructions are available on our Technical Articles page.

E-Mail Us if you have any questions on how to check the software revision currently in your game, or on changing/updating your game's ROM chip(s).

What is a USB memory key?:

The new Stern Pinball "S.A.M." system uses a USB interface to upgrade it's game software- ROM chips are no longer used on these systems.

A USB memory key is used to install the upgraded software into the game's system. USB memory keys (or "flash drives") are used on personal computers and are basically the modern day equivalent to the floppy disk or a CD-ROM.

For more information on upgrading the software in new Stern games with the S.A.M. system, see the service bulletin on the Stern website.

How to Determine Software Version in Your Pinball Machine:

If you want to update the software in your pinball machine, you'll first want to see what version of software you have in order to determine if a newer update is available, or if you have the latest version already.

The way to determine the software version varies from manufacturer to manufacturer, and also depends on the age of the game:
  • Most games will display software revision information in the display when you first turn them on, and while they are booting up. Some will display the information when you first put them into audits, or "test" mode, as well.
  • ROM chips on the boards in the backbox are often labeled with the software revision information (see image below):

    Always check the above two items first.
Here are a few examples of some types of games:

  • Bally and Stern Pinballs (1977-1984):
    These games often did not have any software updates produced for them, but for those games that did, it's often difficult or impossible to tell what version is installed in the game. If you have any specific questions on these, please     e-mail us for more info.

  • Bally Pinballs (1985-1989):
    Most of these games will display software revision information when you enter the "test", or "diagnostic" mode, via the buttons on the inside of the coin door.

  • Bally/Williams (WPC) Pinballs (1990-1999):
    Game ROM revision information usually displayed while game is starting up:


    Game ROM revision is also available by entering menu system via ENTER button on inside of coin door:


    After displaying the above, the game will pause for about 1 to 2 seconds, then display the sound ROM revision info:


  • Williams Pinballs (1977-1985):
    Game ROM information is displayed in the 1st player display when you enter audits mode, via the buttons on the inside of coin door. The first number is the game production number, and the second is the software revision number (usually 1, 2, 3, or 4, for L-1, L-2, L-3, or L-4, respectively):


  • Williams Pinballs (1985-1989):
    Game and sound ROM information is displayed in one of the displays when you enter audits mode, via the buttons on the inside of coin door.

  • Data East Pinballs (1987-1995):
    ROM information is usually displayed on display during startup, or after entering audits/diagnostics mode via buttons on inside of coin door.

  • Sega & Stern Pinballs (~1995-2004):
    ROM information is usually displayed on display during startup, or after entering audits/diagnostics ("Portals") mode via buttons on inside of coin door. Some late-model games may not show any software version information at startup- see the next section below for more info.

  • Stern Pinballs (2004-up):
    ROM/software revision information may or may not NOT be automatically displayed on the score display during startup- depending on the exact game/model. If your game does not show the software version info at startup, turn the game off, and hold the RIGHT flipper button in while you turn power back on, and continue to hold, and the game will show software revision information as it boots up.

  • Gottlieb Pinballs (1978-~1983):
    These games, also, rarely had any software updates produced. E-mail us if you need more info.

  • Gottlieb Pinballs (~1983-1994):
    Revision info is usually displayed by entering "test" or "diagnostic" mode, via buttons on inside of coin door. Some later model games with dot-matrix displays may show revision information on display during startup.
If you have any questions or problems determining the software versions in your game, feel free to e-mail us.

Changing ROM chips back to English language:

Some games originally intended for overseas (outside the U.S.) destinations had special ROM chips installed at the factory for foreign (non-English) language.

To change such a game back to English language, you may need to replace some ROM chips, or make some software/hardware adjustments, depending on the type of game. Usually just the game and/or display ROMs need to be changed. Sound ROMs were usually always in English and do not need to be changed, in most cases.

Most non-English chips will have an identifying letter as part of the software revision information on the chip label. For example, a German language chip might be labelled "G4.01", or "LG2", whereas an English (American) chip would be labeled "A4.01", or "LA2", etc. Click here for information on determining software revision information in your game, or e-mail us if you have any questions.

NOTE: You can always look up a full listing of chips, by game name, in our chart above. Listings in this chart are alphabetical, by game name, and will give a full listing of available chips for each game, and their revision information, where available. Online ordering (through PayPal.com) is also available there.

Here is an alphabetical list of game types by manufacturer, and the chips that usually need to be changed:
(If you don't see your game/type listed here, e-mail us for information.)

All games up to 1985:
Most games prior to 1985/1986 did not have language-specific ROM chips installed, so no need to change these. There were a few exceptions- such as some games that used foreign-language speech ROMs.) If you have any questions on a specific game, feel free to e-mail us.

Bally Pinballs 1985-1989 (6803 MPU):
19 Bally pinballs were made that used the 6803 MPU board which featured 1 or 2 language-specific ROM chips- U2 and U3. (Eight Ball Champ through Atlantis). Chips to change:
  • Game ROM U2 and/or U3.
Sound ROMs do not need to be changed.

- Here is an example from the chart above: Escape From the Lost World

Bally Pinballs 1989-1990 (System 11 MPU):
Williams took over Bally pinball in 1989 and still manufactured games under the Bally name, but often used Williams circuit boards and hardware. See "Williams Pinballs 1985-1990" below for more info.

Bally Pinballs 1990-1999 (WPC MPU):
See "Williams Pinballs 1990-1999 (WPC MPU)" below.

Data East Pinballs 1987-1994:
Most Data East games require changing both game ROM and display ROM chips. Some games may use just one chip for game or display- others may use two. It depends on the game.
  • Game ROM B5 and/or C5.
  • Display ROM 0 and/or ROM 1 (later Data East- some games may have chips labelled "ROM0" and "ROM3")
Sound ROMs do not need to be changed.

- Here is an example from the chart above: Maverick

Sega Pinballs 1994-1999:
Sega took over Data East pinball, so most early Sega games were the same configuration as late Data East.
  • Early Sega:
    • Game ROM B5 and/or C5
    • Display ROM 0 and/or ROM 1 (some games may have chips labelled "ROM0" and "ROM3")
  • Later Sega:
    • Game ROM U210
    • Display ROM 0
Sound ROMs do not need to be changed.

- Here is an example from the chart above: Frankenstein

Stern Pinballs 2000-up :
Stern took over Sega pinball, so to-date, Stern games have the same configuration as late Sega games did.
  • Game ROM U210
  • Display ROM 0
Sound ROMs do not need to be changed.

- Here is an example from the chart above: High Roller Casino

Williams Pinballs 1985-1990 (System 11 MPU):
The Williams System 11, 11A, 11B, and 11C MPU board uses two language-specific chips- U26 and U27. Note that some of the first early System 11 and System 11A games (click here for list) will only require a jumper to be changed on the MPU board in order to switch between two languages, such as German and English, and may not require ROM chip changes at all. On these games, jumper W7 is removed (clipped) for German language. Jumper W7 is installed for English language. Jumper W7 is located near chip U49- between the flipper relay and battery holder on the MPU board. See the Locations of ROM Chips section below for details, and a picture indicating exact location of the ROM chips and W7 jumper.

For games not using jumper W7 for language change, the following chips must be replaced:
  • Game ROM U26 and U27
Sound ROMs do not need to be changed.

Williams Pinballs 1990-1999 (WPC MPU):
Bally and Williams games of this era were both manufactured by Williams Electronics, and used the WPC MPU board.

Most WPC games do not require ROM chip changes to change the language. Language is selectable through the game's menu system- software adjustments/settings. And also by way of jumpers or DIP switches on the MPU board (for "default language"- see below).

A select few (less than 5 or 6) of these games actually have versions of some chips (game AND sound ROMs) that are foreign-language-specific (non-English). Some that use these are WhoDunnit and World Cup Soccer. There may be others. If you have one of these games, look them up in the chart above for further details.

Most Bally/Williams WPC games will have the desired language selected in the game's software settings/adjustments. Refer to your game manual for the exact information on this.

These games also have a "default language" setting that causes specific language/options to be loaded/set when the game is initialized (by factory reset, ROM chip version change, or loss of memory (removal or drainage of batteries)). The default language is specified by jumper settings (early games) or DIP switch settings (later games) on the MPU board itself.

There is a chart of jumper/DIP settings inside the front cover of your game manual that will show the specific settings for the default language of your choice. After changing these settings on your MPU board, you must perform a "factory reset" in the game's Utilities menu, or remove one of the batteries on the MPU board for a few minutes to clear memory, then re-start the game. The new default language settings will be installed at that point. All other memory will be cleared and reset (including audits, adjustments, settings, and high scores). Your game will also display a message stating "factory settings restored". Turn game off then back on, and everything should be back to normal, with your new default language installed.

Some WPC games DO have language-specific chips (as mentioned above), but not many. If you have any questions about your specific game, see the chart above or e-mail us.

Sound ROMs usually do not have to be changed, other than for some specific games, as mentioned above.

- Here is an example from the chart above: WhoDunnit

Locations of ROM Chips in Various Games:

ROM chips will be located in different areas in different games, depending on age, brand, what board they're used on, etc. Here is a list of some common types of games and where their different types of ROM chips are located:

More entries coming soon!
  • Data East Games (1987-1994):


    MPU Board:
    The MPU board is the large board located in the top center area of the backbox in System 11 games. The MPU board has a battery holder with 3 x AA batteries in it, which is located near the top left corner of the board. The MPU board contains locations for two game ROM chips (B5 and C5). These locations are just to the right, and below, the battery holder. A RAM chip, which looks similar to the ROM chip(s) is located just below ROM locations B5 and C5.

    Data East MPU board component locations are listed by alpha-numeric index- numerically across the top of the board, and alphabetically down the left side of the board. Most boards will have "B" and "C" printed in white ink to the left of ROM locations B5 and C5, respectively.

    NOTE: Not all games will use ROM "B5"- some will use only a C5 chip. So don't be alarmed if you find no chip installed in the socket at location B5.     		Image With Chip Locations:



    (Click to enlarge)

    Dot Matrix Display Driver Board:
    Games with dot-matrix score displays will use one or two ROM chips, which are installed on the dot-matrix display driver board, located on the back side of the display/speaker panel at the bottom of the front of the backbox.

    The display/speaker panel must be lifted up, out, and layed-down in order to gain access to the back side of the unit, and the driver board located there.

    Two display ROM chip locations are present on the board, and should be marked with white ink on one end of each chip. These are locations "ROM 0" and "ROM 1".

    NOTE: Not all games will use both ROM chip locations on the display driver board. So don't be alarmed if you find one of the chip sockets empty.

    NOTE: If you are replacing TWO rom chips with ONE rom chip (or vice-versa), then you will need to make one jumper change on the display driver board in order for it to work correctly with the new chip(s). Click here for details.

    (Click to enlarge)

  • Williams System 11 Games (1986-1990):


    MPU Board:
    The MPU board is the large board located in the center/lower-left area of the backbox in System 11 games. The MPU board has a battery holder with 3 x AA batteries in it, which is located near the top center of the board. The MPU board contains two game ROM chips (U26 and U27), and two speech ROM chips (U21 and U22). Chips U26 and U27 are located a few inches to the left, and below, the battery holder. Chips U21 and U22 are located a few inches to the left of the battery holder. The board should have the chip numbers/locations printed in white ink next to the chip sockets on the board.     		Image With Chip Locations:



    (Click to enlarge)

    Sound Board:
    Sound board in System 11 games is located just above the MPU board- top right corner area of backbox. There were a few different types of sound boards used between 1986 and 1990, and ROM chips were located in different spots on each board. ROM chips used were labeled U4, U5, U19, and U20. Some games used ROM chips only in some of these locations, others used chips in all locations, depending on the specific game.     		Early System 11 Sound Board:


    Mid & Late System 11 Sound:



    (Click to enlarge)

    Disclaimer:

    • Action Pinball & Amusement, LLC, assume no responsibility or liability for any problems, damage, or loss caused to you, your game, or your location due to faulty ROM chip(s), USB key(s), or the software residing on these devices, or any improper use or improper installation of ROM chip(s) or USB key(s). Rom chip(s) and USB key(s), provided by Action Pinball & Amusement, LLC, are used and installed at your own risk. Any warranty covers only the chip or USB key itself. Warranty does not cover damage to you, your game, or your location, or any loss of profits or use. You assume full responsibility for any problems that may occur from use of ROM chip(s) and USB key(s) from Action Pinball & Amusement, LLC.

    Important Notes and Legalities:

    Prices charged for ROM chips and USB keys supplied by Action Pinball & Amusement, LLC, cover only the cost of the chip or USB key, and handling. There is no charge assessed for the software itself which is programmed onto the chip. Software is property of the author. We do not own or sell any software- simply the chips or USB keys themselves, upon which the software resides.

    Chips for Bally/Williams Games (WMS Electronics Games, Inc.):     Chips and USB Keys For Any/All Games:
    • Most manufacturer's copyrights require you to own the particular game you are obtaining replacement software for, so any chips or USB keys we provide with software residing on them, are provided soley on that basis. We are not selling the copyrighted software- just the physical devices themselves that the software resides on, for use as replacement or upgrade in your game.
    • In accordance with the Williams Electronics Games, Inc. Software License Agreement, we do not supply or distribute individual ROM images (data). E-mail requests for ROM images will be ignored and discarded.
    • In accordance with copyright and distribution restrictions on chips of other/all manufacturers, we do not supply or distribute individual ROM images (data). E-mail requests for ROM images will be ignored and discarded.
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