PS 5.5 loads and saves amiga .iff
not sure about the other formats.
This might be what you are looking for.
Iff Pro 0.08b INFO:
IFF PRO is a freeware image conversion tool for windows. It’s purpose is to convert various (previously unsupported) special Amiga Mode IFF images to Windows BITMAPS. While very simple in operation, What makes IFF PRO special is it’s support for these Amiga specific IFF files formats. Including Half Bright, Dynamic Hires, HAM6, HAM8 and even Sliced Ham. (SHAM).
