For reading ADFs directly for harddrive:
I dont know if this is actually possible, but I know it was for DMS files. Wow! :-o Its seems forever since I layed fingers on my Amiga 1200. I am just waiting till I put my new 1.2gig Athlon setup together, then I will put out my A1200 and start to conquer my Peecee. :-)
You will need an Amiga disk drive, and the PeeCee ones will not work unless you have that catweasel controller. You can probably find disk drives for your Amiga 1200 at
www.softhut.com or
www.amibench.org. They also shouldnt be that much either.