Sounds like an amusing project. You must be aware of cmios9.exe? kmi9000 released his source to cmios9 in February last year. All the details of how these various filesystems hang together is in the source.
Failing that, there are some old Motorola MDOS technical manuals online which detail that bit of it, and the os9/os9 68k format is also a standard. I think some enthusiasts are still using in in Europe.
kmi's cmios9 is a utility, and filesystem tool, for OS9, MDR DOS, and QDOS file access. It works on any (well, any that I've yet found) disk image, large and small.
IMO It's very good software. And kmi was very helpful with requests before he made it open source, when I was doing some reverse-engineering of the IIx internal file formats this time last year. The work would've taken much longer without his kind modifications.
Available here:
Do you need more fulsome access to cmi disk/diskette images than kmi's cmios9 provides? If so, what are you up to, can I ask?
On Tue, Jan 3, 2012 at 12:19 AM, Gordon JC Pearce <gordon@gjcp.net> wrote:
Does anyone have a description of the Fairlight disk format? I9;ve got a bunch of Fairlight disk images here downloaded from the 'net, and I'd like to have a crack at implementing the filesystem in something like FUSE.
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Gordon JC Pearce MM0YEQ <gordonjcp@gjcp.net>