This may be a long shot but Paul Bamborough worked on the original SSL software and Phil Cork did later from 1982-89 when he joined Motionworks for 9 years. Paul left and later designed the Lightworks editing software and one online report mentions that he may have sadly passed away (I hope I'm wrong) but I have indirectly traced Phil online and he now works at Tom Tom in Holland.
His work experience at SSL is described as follows:
'Led a team of 2 to evolve the hardware and software for Studio Computer for SL4000-6000 consoles from E series to G series, expanding disc and memory storage, and rewriting dynamic mix system for greater speed and operator functionality. Programming was in Mini Computer 16 bit assembly language. Won audio industry award for design and development of mixing console reset facility called Total Recall with Autoscan.'
Maybe he could help if contacted although the software rights presumably still belong to SSL and they would not really be inclined to help as it would supposedly extend the life of the older SSL consoles and they have already stopped supporting them as it would, rightly or wrongly, hinder sales of their newer consoles.
