Int 31/AX=0201h

AX = 0201h
BL = interrupt number
CX:DX = segment:offset of real mode handler

Return:
CF clear

Note: All memory that may be touched by a hardware interrupt handler must be locked down with INT 31/AX=0600h

See Also: AX=0200h - AX=0205h - AX=0600h - INT 21/AX=2505

Category: DOS Extenders - Int 31h - D