Int 21 Fn 6300  - Dos 3.2+ - Get Double Byte Character Set Lead-byte Tabl  [D]

   AX = 6300h

Return: AL = error code
       00h successful
       DS:SI -> DBCS table (see #1435)
       all other registers except CS:IP and SS:SP destroyed
       FFh not supported

Notes: probably identical to AH=63h/AL=00h for DOS 2.25
   the US version of MS-DOS 3.30 treats this as an unused function,
     setting AL=00h and returning immediately, WITHOUT setting DS:SI;
     only the Far East versions of MS-DOS 3.2 and 3.3 supported this call
   the US version of DOS 4.0+ accepts this function, but returns an empty
     list
   IBM DOS 6.1 SYS.COM assumes that CF is set on error

See Also: AX=6300h"DOS 2.25"