As of today I have managed to get my IBM Model F XT to work. But as a part of the process I cut the old cable in order to connect the converter (ItsyBitsy 32U4, so it is quite small). My idea was to have the Itsy inside the keyboard and then in some way connect it to a computer.
Now I realised that I maybe should not have cut the old cable. It is in good shape, at least on the surface (maybe some sanding on the ground screw is needed) and I have seen other "restorations" where they throw away the old coiled cable and that was not popular.
Right now I have from the ItsyBitsy a micro USB to USB A, but that will not look good going out of the board and then I also really would like to use the old cable with its big din connector in some way. Do any of you have an idea how this can be made in order to keep the old cable!? One way would of course be to solder the old cable back again and move the converter outside the keyboard, and just have an adapter from din to usb.