Is there any software available to open old Kodak Master and Pro Scan CDs and DVDs of scanned film?

For many years before there were digital cameras, photographers were able to get low-cost digital scans of film by labs using Kodak Master Scans and Pro Scans.  Is there any software for accessing these old CDs and DVDs?  Master scans were used primarily on 35mm film, and were very low cost, but a lower resolution.  Pro Scans were at a higher resolution, and could be performed on 35mm, 2.25," and 4x5 film.

I am wondering if Adobe would make a plug-in for those old image disks, or if not, is there other software out there?

It's a little foggy, but I seem to remember that PS CS2 or CS3 used to have a .PCD converter.