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;--- unlike masm, jwasm needs no QWORD PTR for untyped memory .286 .MODEL small .686 .CODE v1 dq 0 cmpxchg8b [v1] cmpxchg8b qword ptr ds:[0] cmpxchg8b qword ptr [bx] cmpxchg8b qword ptr [bp] cmpxchg8b qword ptr [bp+4] cmpxchg8b qword ptr [ebx] END