Int 21H, AH=63H, AL=01H

2.25, 3.2 and higher

SET KOREAN (HANGEUL) INPUT MODE

AX = 6301h
DL = new mode
  00h return only full characters on DOS keyboard input functions
  01h return partially-formed (interim) characters also

AL = status
  00h successful
  FFh invalid mode
 

Novell DOS 7 simply stores DL in the caller's PSP (see #01378 at AH=26h). The US version of MS-DOS 3.30 treats this as an unused function, setting AL=00h and returning immediately; only the Far East versions of MS-DOS 3.2 and 3.3 supported this call

AH=07h - AH=08h - AH=0Bh - AX=6300h

Text based on Ralf Brown Interrupt List Release 61