Get Processor Exception Handler Vector

Returns the address of the current client's protected mode exception handler for the specified exception number. This function should be avoided by DPMI 1.0 clients (see Notes).

Call With

AX = 0202H
BL = exception number (00H-1FH)

Returns

if function successful
Carry flag = clear
CX:(E)DX = selector:offset of exception handler

if function unsuccessful
Carry flag = set
AX = error code

8021H invalid value (BL not in range 0-1FH)

Notes

The value returned in CX is a valid protected mode selector, not a real mode segment address.
32-bit clients will be returned a 32-bit offset in the EDX register.
Clients which run under DPMI 1.0 should use Int 31H Functions 0210H and 0211H to obtain the addresses of exception handlers. This function is supported by DPMI 1.0 hosts solely for compatibility with DPMI 0.9.