Basicode-3 (1989)(Martin Duchrow)[a2][Beta 2]
Maintape V4.5 (19xx)(Martin Duchrow)[a][doc]
Maintape V4.5 (19xx)(Martin Duchrow)[a3][doc]
Maintape V4.6 (19xx)(Martin Duchrow)[doc]
Maintape V4.5 (19xx)(Martin Duchrow)[a2][doc]
Maintape V4.6 (19xx)(Martin Duchrow)