Int 31H Function 0202H
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).
AX = 0202H
BL = exception number (00H-1FH)
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)|
- 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
- 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.