Compatibility: DPMI 0.9+
Expects: AX    0b02H
BX    watchpoint handle (as obtained via INT 31H 0b00H)
                                                                  
Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
AX    watchpoint status bits: bit 0: 0=not encountered
1=has been encountered
1-15: reserved
                                                                  
Info: Obtains information about the status of a debug watchpoint
previously specified via INT 31H 0b00H.

You may use INT 31H 0b03H to clear the watchpoint without
releasing the handle.

See Also: DPMI API
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INT 31H 0b02H: Query State of Debug Watchpoint