for Bally Williams WPC pinball machines

  • WPC-89
  • WPC-S
  • WPC-95

Designed for a long journey

For your Bally Williams WPC pinball machine

The RocketCPU is a drop in replacement board for your original WPC- 89, WPC-Security or WPC-95 CPU. Fully compatible with your Bally / Williams pinball machine.
Thanks to the embedded Multipass Technology, the very same RocketCPU is now compatible with WPC-89 and WPC-Security pinball machines!
Exact same schematics as original, with some extra features: integrated No More Reset, CR2032 batteries, Smart Status, high accuracy clock, remote battery holder, shrouded ribbon connectors and much more.

Easy configuration and installation

Universal Security

No More Reset

Smart self-diagnosis
status LED

100% compliant with
original CPU board

Get your RocketCPU

Upgrade or repair your pinball machine today!

MultiPass Technology

The inclusion of Multipass Technology within the RocketCPU ensures seamless compatibility
with either WPC-89 / WPC-S / WPC-95 pinball machines.

RocketCPU eliminates the need for the Security Chip (U22 or G10) and can be effortlessly installed on any WPC-S or WPC-95 pinball machine, automatically generating the required security key, ensuring compatibility without constraints.

Integrated No More Reset

Tired of untimely resets? No More Reset prevents any +5V issue that can affect your WPC pinball machine.

No need to buy the addon: it’s already integrated onto the RocketCPU!

High Accuracy Clock

Ultra-precise clock and RTC oscillators integrated into the RocketCPU board ensure an exceptionally stable clock with virtually no drift.

Smart Status

Smart Status simplifies the monitoring process by providing clear, visual cues that indicate your pinball machine’s status. 

Whether everything is running smoothly, Multipass mode is engaged, the battery is running low, there are system errors, or voltage levels are outside the optimal range, with Smart Status you’ll know immediately if any action is required.

RocketCPU with Smart Status ensures you can enjoy your pinball machine to the fullest without interruptions or uncertainties. It’s the ultimate tool for both beginners and experienced enthusiasts, offering peace of mind.

RocketCPU compatibility with Bally Williams WPC pinball machines

You can get more than a CPU

With the “Ready To Play” service, your RocketCPU will be fully equiped with all the required components.

Installation steps: remove the original CPU, connect the RocketCPU, turn on your machine!


Your ASIC is missing or damaged on your original CPU?
You don’t feel confident on how to extract it with the free provided extractor?
Select the “Ready To Play” option and your RocketCPU will be populated with a brand new WPC ASIC.


The micro-processor can be provided if you select the “Ready To Play” option.

Else, you’ll have to transfer it over to the RocketCPU during installation with the free provided tool.



With the “Ready To Play” option, the PinSound NoVaRAM is added. High Scores saved forever!

Official & Enhanced Bally Williams EPROM​

If your game code is not up-to-date, you might be missing game code improvements when you play.
You can get the programmed EPROM for your pinball machine, the game code will be the latest official one provided under agreement with Planetary Pinball Supply.
Some game codes have been recently improved: Creature From The Black Lagoon (5.0)Demolition Man (7.0) / Junk Yard (2.0) / Mousin’Around (5.0) / Radical (3.0) / Road Show (7.0) / Theatre of Magic (2.0). Update your pinball machine with the latest game code and improve your overall game play.
If you select the “Ready To Play” option, the EPROM (latest version available) will be installed on your RocketCPU.
If you only need the EPROM game code alone (without the RocketCPU), you can buy it directly from the pinball machine page.

2 years warranty

Every PinSound product is designed to offer a high and long-lasting quality. RocketCPU has been designed and manufactured to guarantee a long lasting product. Once manufactured, each RocketCPU is checked in a fully automated electronical & functionnal test bench. Before dispatch, each RocketCPU is checked by a PinSound team member. RocketCPU is covered by a 2-years warranty and will be replaced if anything happens due to materials or manufacturing defects.

Technical specification

Reliable technology for your collectible pinball machine

Bally / Williams WPC direct replacement CPU board for:

  • WPC-89 CPU A-12742 / MPU089 
  • WPC-S CPU A-17651 / A-17651-XX / MPUSEC
  • WPC-95 CPU A-20119 / A-20119-XX / A-21377 / A-21377-XX / MPU095

The new pinball standard

Some might find charm in meticulously recreating electronic boards true to past relics, flaws included. At PinSound, however, we’re all about leveraging modern technology to push the pinball experience further. Our RocketCPU boards are a testament to this philosophy, entirely redesigned to blend original logic with groundbreaking features. They’re built not just for nostalgia but for a genuine revolution in pinball user experience and maintenance.

Why aim for replication when you can aim for evolution?

With easier installation, superior robustness, and straightforward diagnostics, RocketCPU invites you to free your mind and truly enjoy pinball.

Compatible with every Bally Williams
WPC-89 / WPC-S / WPC-95 pinball machines

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