The Ultimate Gottlieb System 1 CPU Replacement – Reliable, Modern, and Loaded with Features

This plug-and-play replacement board is a direct drop-in for the original Gottlieb System 1 CPU and supports all System 1 games. Designed for durability and easier diagnostics, the NI-WUMPF CPU features re-written, glitch-free game code and modern components to eliminate battery damage, wiring issues, and outdated diagnostics.

No ROM swapping, no battery maintenance, just smooth, worry-free gameplay.

Key Features:

• Direct replacement for System 1 CPU board
• Re-written game code (no original bugs)
• 16 System 1 games included on one board – no ROM swapping
• Enhanced diagnostics via DIP switch menu
• Text-based on-screen diagnostics
• Built-in self-tests for switches, solenoids, and displays
• Battery-free memory storage with >100,000 write cycles
• Free play mode, ball save, million point scoring
• Add-a-ball support with disable options
• Open-collector output with zener diode protection
• Skill shot and idle mode animation
• Four high-score memory banks
• Designed for fast repairs and easy maintenance

Original MPU functionality has been closely duplicated and adds many optional features including:

• Free game mode
• Updated game options for many games to allow add-a-ball mode (multiple free-balls awarded during a single ball) where the playfield challenge is completely reset once after scoring the free-ball / special.
• Menu options to disable add-a-ball (for operators who requested it!)
• Automatic scoring threshold adjustment.
• Ball Save!
• Million point scoring.
• Idle mode animation.
• Skill shot option.
• Four high scores memory.
• Restore factory-settings option for quick reset of settings.
• Open-collector output logic with zener diode protection for all solenoid circuits and lamp select lines to prevent CPU damage from a damaged driver board.
• Battery-less operation - all settings and high-score data are stored in FLASH with >100,000 write cycles.
• Designed for low-cost component repair and maintenance on I/O sensitive components (exposed to bad displays / bad driver boards, etc.)
• Stuck switches are ignored and do not impair the rest of the games operation, including the slam switch!