These are the chips needed to upgrade your pinball machine to the latest version, play a different version, or replace missing/damaged roms.
Bally Williams Part #’s:
CPU ROM U26 L8 A-5343-557-1
CPU ROM U27 L8 A-5343-557-2
SOUND ROM U4 L1 A-5343-557-5
SPEECH ROM U19 L1 A-5343-557-6
SPEECH ROM U21 L1 A-5343-557-4
SPEECH ROM U22 L1 A-5343-557-3

CPU 2 Rom Set [U26, U27] Version L-8 (This listing is the most current official release)

Revision History: (Included for reference)
Game Version L-8

U26 : Checksum: 9256
U27 : Checksum: 03D0

Sound Revision History: (Included for reference)
Sound Version L-1

U4 : Checksum: 84B0

Speech Version L-1

U19 : Checksum: 1DAF
U21 : Checksum: 4D54
U22 : Checksum: 844C

Weight .25 lbs
System 11 Roms

CPU Rom Set vL-8 [U26, U27], CPU Rom Set vL-7 [U26, U27], CPU Rom Set vL-A [U26, U27], CPU Rom Set vP-1 [U26, U27], Sound/Speech Rom Set [U4,U19,U21,U22]


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