I have managed to convert the game: The Unforgivable Innocent, developed in pure Sinclair BASIC, to other development tools. Firstly the easy one was compiling using MCoder III which required the unchanged Sinclair BASIC program to be compiled. And then the conversion from Sinclair BASIC to Boriel Basic which implied several source code changes to make it work.

You can download the updated file including source code and tape files from the Games & applications section.

Thanks for playing and trying the game!