Loading only fasl files

Hello from Greg Bennett who is trying to debug some compilation issues in Allegro. I have what I believe to be a completely compiled project, consisting of several systems, and I would like to load only its fasl files. Specifically I do not want to re-compile the source files which would replace those fasls. I have looked at the manual in the hope that load-bundle-op might work, but I see that this requires *compiling* the source into a single fasl. Perhaps (probably!) I'm missing something. Any advice/assistance much appreciated. Cheers Greg