Whirlwind © 1990 Williams Electronics Games, Incorporated.
Williams System 11B
Main CPU : M6808 (@ 1 MHz)
Sound CPU : Motorola M6809 (@ 2 MHz), OKI M6808 (@ 1 MHz)
Sound chips : Yamaha YM2151 (@ 3.579545 MHz), (2x) DAC, (2x) HC55516
The interesting aspect of Whirlwind which features a fan which would activate whenever a lock was lit and during multi-ball to simulate a storm.
The red button is held by Pat Lawlor himself, driving the Storm Blasters van on the backglass.