synplify轉出quartus 6.0不認得的tri-state pad

starlit

请教一下
用synplify pro 9.62转.qsf要给quartus II 6.0
有一个I/O PAD被转成如下所示的tri-state pad
quartus 6.0不吃这cell
请问有没有方法可以限定synplify别转出tri-state pad呢
谢谢
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// @36:178
  TRI1 un3_IOPAD (
.I0(i_core_m_i_pinmux_un167_pao_0_iv_i_0),
.E(i_core_m_i_pinmux_un301_paoe_n_0_0),
.OUT0(p1z[6])
);
------------------------------------------------------------------------