The Sinclair QL Forum

Does anybody know, how CST has managed their SCSI drives in 1985? Say, the way of subdirectories and so on? Have they used TT's way or an own firmware? I know, that the native Thor driver use a different value for subdirectories than 255, as TT has done. Did they manage it the same way as the native QLWA hardware driver?

Any further information?