Int 21/AX=2533h

AX = 2533h
CL = exception number (00h-0Fh)
DS:EDX = CS:EIP of new exception handler

Return:
CF clear if successful
CF set on error (CL > 0Fh)

Notes: This call is also supported by the FlashTek X-32VM extender. This function is incompatible with 386|VMM; use AX=2522h instead

See Also: AX=2522h - AX=2532h