Taito Defender Boardset
Williams Electronics licenced Defender to the Taito Corporation for the Japanese market.
The Taito Defender boardset comprises just two boards as opposed to the four from the Williams version. The CPU board is almost (but not quite) an exact copy, whereas the ROM, Sound and Interface boards from the Williams versions were combined into a single board.
Disclaimer:
Although I have done my best to ensure that all information contained on this page is correct, I can take no responsibility for damage to you or your game!