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- * TTL2 KB (256 words) - 19:53, 6 September 2022
- - 7430 TTL14 KB (2,234 words) - 13:57, 28 February 2021
- The last board revision has a custom chip instead of the TTL logic and often but not always a mask ROM instead of the eprom. There have19 KB (3,091 words) - 00:18, 7 September 2022