TO BE DONE in LibDSK 1.3.x:

- The cpcemu driver contains a chunk of code to deal with multitrack reads
 and writes. Write some test cases to exercise it, and see if other drivers
 (such as IMD and JV3) can be enhanced to support this.

- Partition support.
	It looks as if the way to do it is to have a filter driver.
	Something like 
		dsk_err_t dsk_part_open(DSK_PDRIVER *guest,
					DSK_PDRIVER host, 
					DSK_GEOMETRY *dg,
					int npartition);

	This requires:
		- Reference-counting on the host. Either fail dsk_close()
		 if its refcount is > 1, or let it succeed silently.
	
	Once dsk_part_open() is in place, we can also allow partitions to
	be passed as filenames:

		partition:n,filename

	which will have a dsk_open that:

		* passes filename to inner dsk_open
		* do a dsk_getgeom
		* pass the resulting parameters to dsk_part_open

	Also: False partition (ie, add a partition table to an image)

		dsk_err_t dsk_false_partition(DSK_PDRIVER *guest,
					DSK_PDRIVER host,
					DSK_GEOMETRY *dg,
					unsigned char type);

		with matching open-by-filename:

		falsepart:n,filename

	The alternative to a filter driver is dsk_option_set with a variable
	of PARTITION, but that has certain problems (eg: you can't have
	multiple partitions open at one time)

	[nb: What sort of partition table do the likes of +3e use, because
	 that's going to give all sorts more fun]


* Weak-sector support is new and may be buggy.
* Write more functions for dsktool.
* The INT25/INT26 driver doesn't seem to work in a DJGPP compile; it fails
 with error 0x701F.
* The INT25/INT26 driver keeps spitting out diagnostic messages.

* dskid doesn't work on a DFS .DSK file. Why? Because get_id doesn't fail?
* Support for DMK file format.
* Java support for the Reporter classes is buggy [seems to work now 11-5-2003]
* Plugin architecture:
	dsk_register_driver
	dsk_register_compression
	dsk_register_remote
* Support for TD0 file format.

* Support remoting libdsk...
	>> May need to write a PCW backend that dances on the controller
	  rather than using decorum and the XBIOS.
	>> May need to write a Win16 version of serslave.
	>> May need to write a Win16 RPC client.

* Support a reverse-cpmfs backend (that lets a directory appear as a disc 
 image).
	>> File in directory called .libdsk.ini that gives LibDsk geometry
	  and CP/M directory info
	>> File in directory called .libdsk.boot containing boot sector.

	>> Full of debug code
	>> Default format is pcw720, not pcw180
	>> Needs to be compilable on other OSes
	>> Doesn't truncate files.

* The load-all-into-memory strategy in Apridisk won't work on DOS16. Does
 this matter, bearing in mind that the real Apridisk exists on DOS16?

* CopyQM: Compare to real BBC Master 512 disks 2-4.
