Using a 6802 on a type 2 sound board
A type 2 sound board can run a 6802 instead of the 6808 with the 6810 RAM at IC11 removed, but a trace on the solder side under R30 must be cut, or a pull-up stays grounded.
Systems
Related tips
- Type 1 and type 2 sound boards and their switches
- Sound EPROMs work in either sound board type
- Leon test: type 2 sound board RAM IC11
- Which sound board each game uses
- Sound board jumpers for 2K sound-only games
- System 6/7 sound board can take a 6802 in place of the 6808 and 6810
- Using the sound board test switch
- Powering a sound board for testing
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Three, Clay Harrell (pinrepair.com)