Gould PC 0085 PLC

I have 3 Gould PC 0085 PLC's at the plant where I work. At present, I use a PP0105 handheld programmer to edit the program.
Does anyone know if there is software available to program these via laptop, or store the program to a floppy disc instead of a cassett tape.

Any help would be appreciated.
:site:

There was a DOS version at one time, I have it somewhere on an old 286 laptop. It required a special interface cable, and I have it also.
I'm not sure if the interface cable worked as a key but there is a chip of some kind in it. It has been out of production for a long time.

Sid