🚀 go-pugleaf

Can anyone tell me where I can find a specification of the DMF diskette
format? 

I've got the job of providing the ability to read, write and format
DMF diskettes from UNIX, and it would help it I had an official
specification of what the format was, rather relying on what I've
reversed engineered.

What I know so far is 

	512 bytes per sector
	21 sectors per track
	2 or 4 sectors per cluster
	80 tracks
	2 sides
	1 reserved sector (i.e. boot block)
	2 FATs
	5 or 3 sectors per FAT
	16 root directory entries (i.e. 1 sector)
	2:1 interleave
	skew of 3

How much of this is part of specification of DMF, and how much consists
of parameters selected from an allowed range? Are then any formal or
effective constraints on the contents of the boot block?

I hear that XDF is similar. Is a specification for XDF available?

I've found books which describe the format of DOS diskettes.
However, is there a formal specification available anywhere.

Followups set to comp.sys.ibm.pc.misc only.

Stewart R.Hinsley, Advanced Development and Porting Centre, ICL Enterprises
                                Processes should serve us, not we them
 e-mail to      stewart@zen.icl.co.uk           (work)
                stewart@meden.demon.co.uk       (home)