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Ni-Wumpf Gottlieb System 1 MPU
Item #: GOTTCPU
Currently not available to order
The Ni-Wumpf System 1 board 2017 revison is a plug-in replacement for the original Gottlieb System 1 CPU. It supports all of the games in the platform series, and provides considerable diagnostic capability for the technician when troubleshooting where a game may be malfunctioning. The entire game software has been re-written with an emphasis on maintaining the timing and compatibility of the original board, however with quite a bit more functionality added in:
Direct replacement of the original System1 board
Enhanced switch input circuitry preventing damage to the board from playfield wiring issues.
All game code completely re-written (with some minor original Gottlieb glitches omitted!)
Eighteen years in business with thousands of boards sold internationally
Text based diagnostics menu system that allows operator settings previously done via DIP switches to be entered via front door switches
Tests that cycle repeatedly (until timeout) to help isolate faults
Enhanced use of high reliability surface-mount components with off-the-shelf thru-hole components at the edge for ease of serviceability.
Display test to exercise all digit segments (numbers), and to strobe each digit independently to check for display (UDN6118) shorts
Solenoid test that exercises each coil including lamp controlled coils (when DIP switch configuration set for such a game)
Power-up code revision and game setting displayed for quick diagnostic configuration identification
Enhanced switch test to identify stuck switches
Switch test that detects dirty switches on the playfield
All 16 System 1 games are included on one board with no ROM swapping required
One DIP switch setting to select your game
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
Million point scoring
Idle mode animation
Skill shot option
Four 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 NVRAM 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!