Extracting CDOS files

Hi Guys, I've been approached by an artist who has many 5.25" Cromemco CDOS disks containing artwork from early in her career the she would like to recover. She has already made arrangements with the supplier of the original software to convert the files to something she can use on a modern PC, however she needs the files extracted from the CDOS disks. As there are several hundred disks, I would really like to find a PC based solution which I can automate. So far I can have tried the shareware version of 22disk, which can list the directory, however it reports multiple linked sectors in two of the three sample disks I am looking at, and also gets unrecoverable errors on sector 1 of every track (sector 1 on Cromemco disk is problematic with a PC - I've already got the drive slowed slightly, which allows ImageDisk to read and recreate the entire disk. So I have access to all of the sector data, but no way to feed it to 22disk. I've also tried Uniform, however it gets an unrecoverable error on any attempt to access the disk - in fact the error comes at the moment the drive selects, so I don't believe it's even trying, possibly because the P200 PC in my imaging station is "Way too fast" for software timing loops etc. So I am left with the option to extract the files from the ImageDisk images - what I need are technical details on the CDOS file system. CDOS is "CP/M compatible", does anyone know if the file system is identical - if not, can anyone point me at technical details. If yes, can anyone point me at a good description of the CP/M file system (It's been years since I needed to dig deeply into it). Anyone got source code ('C' preferred) for extracting files from CP/M? I have found sector->cluster mapping tables in the back of the CDOS manual, which hopefully will help sort out the XLT issues etc. Any other assistance/suggestions/pointers etc. would be most welcome. Regards, Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html