  noW implemented: floppy cache
                   int 0x13 LBA extensions support
                   command line arguments
                   all in one binary (TSR, unTSR, info, flush)

  not planned:     useability with EMS and 8086 (use DCACHE there),
                   DOS rather than int 0x13 cache,
                   write cache (may be offered as a separate tool).

  further notes:   CD-ROM cache is still noT implemented. Might become
                   as separate tool. Just as write cache, read ahead...


  History of LBAcache:

  12.-13.10.2001 first working version (fixed 1024 sec buffer).
      14.10.2001 added more verbosity, statistics, round-robin search.
  18.-20.11.2001 wrote a LBA (and CHS) big version (needs more DOS RAM).
                 Default are now 2024 sectors.
      22.11.2001 Alternative "no search" dumb but fast logic for binsel.
      23.11.2001 added ability to run CHS only to the LBA version,
                 so the CHS version is discontinued. Now sys -and- com!
     -25.11.2001 lots of bugfixes and improvements, command line parsing.
                 <   new year: 2002   >
      11.01.2002 added the floppy cache function: enable with FLOP ;-).
                 Also added the F (flush) option to the uncache tool.
                 Hope disk change detect and chs<->lba still work...
      22.01.2002 multi sector read collection in read.asm, various patches
                 for testing in Bochs (define to ign. missing change line,
                 hack to avoid A20 crash in XMS / Bochs BIOS int 15.87).
      25.01.2002 new option STAK to activate a 500 byte local stack
                 because FreeDOS has a -tiny- 192 byte kernel stack (!).
                 PLUS new options INFO SYNC STOP to access the uncache
                 functions (NO separate UNCACHE binary any more).
      28.08.2002 small cleanup and beautifying of the INFO function,
                 removed beep when detecting floppy disk change.
      10.11.2002 Added parsing for two digit size, modified binsel to
                 use less DOS RAM, added support for 8 harddisks and
                 better drive detection. Tuned some text strings :-).
  13.-15.11.2002 Made LBAcache fast again with memoization in binsel2,
                 up to 25MB XMS now, detection of lack of DOS RAM,
                 fixed MCB resizing in uncache.asm (LBAcache STOP)
                 and improved the help- and info-screens a lot.
  29.-...03.2003 made floppy geometry auto-adjust on disk change,
  ...-01.04.2003 floppies of all sizes up to 1.44 MB should work now.
      23.04.2003 fixed an important BUG that would cause LBAcache to
                 use the geometry of B: or ???: for ANY floppy...!
      26.06.2003 now using int 1e[4] as sectors/track value (floppy)
                 because (Free)DOS sets this depending on boot sector
                 contents (int 13.8.CL only tells hardware geometry).
      26.06.2003 made TICKLE part of the package.
