INT 15 - OS HOOK - KEYBOARD INTERCEPT (AT model 3x9,XT2,XT286,CONV,PS)
AH = 4Fh
AL = hardware scan code
CF set
Return: CF set
AL = hardware scan code
CF clear
scan code should be ignored
Note:   called by INT 9 handler to translate scan codes; the INT 09 code does
not examine the scan code it reads from the keyboard until after
this function returns.  This permits software to rearrange the
keyboard; for example, swapping the CapsLock and Control keys, or
turning the right Shift key into Enter.
SeeAlso: INT 15/AH=C0h

See also: 09

154F - OS HOOK - KEYBOARD INTERCEPT (AT model 3x9,XT2,XT286,CONV,PS)