VERW
Usage: VERW src Modifies flags: ZF
Verifies the specified segment selector is valid and is ratable at the current privilege level. If the segment is writable, the Zero Flag is set, otherwise it is cleared.
Verify Segment Readability/Writability
VERR r/m16 ; 0F 00 /4 [286,PRIV]
VERW r/m16 ; 0F 00 /5 [286,PRIV]
VERR sets the zero flag if the segment specified by the selector in its operand can be read from at the current privilege level. Otherwise it is cleared.
VERW sets the zero flag if the segment can be written.
Example:
verw Label