Sound ROM numbers shared by System 7 games

System 7 games use the type 2 sound board, with a speech board only where needed. Sound ROM 3: Jungle Lord (speech), Laser Cue. ROM 4: Barracora, Hyperball, Joust (and Algar). ROM 5: Black Knight (speech). ROM 6: Pharaoh (speech). ROM 7: Solar Fire. ROM 12: Cosmic Gunfight. ROM 13: Firepower II, Time Fantasy. ROM 14: Warlok. ROM 15: Defender. Varkon is also listed. Alien Poker uses sound ROM 3, often mislabelled in downloads.

Systems

• Williams System 7

Games

• Barracora
• Black Knight
• Cosmic Gunfight
• Defender
• Firepower II
• Joust
• Jungle Lord
• Laser Cue
• Pharaoh
• Solar Fire
• Time Fantasy
• Varkon
• Warlok

Related tips

• Sound board jumpers for sound-and-speech games (2K ROM)
• Joust sound board jumpers (4K 2532 sound ROM)
• System 6/7 sound and speech board ROMs
• Sound board jumpers for 2K sound-only games
• Setting up a sound board for speech
• Sound board test button gives no sound: normal on Joust
• Sound effects work but speech is missing or very quiet: replace the speech board op amps
• No sound effects in play though speech works: check the sound board PIA

Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Three, Clay Harrell (pinrepair.com)