preroute

手拉或者route_zrt_group

小编，还有一个问题，我用create_zrt_shield做出来的shield是一条一条的，有什么办法可以做一整片覆盖的吗?

icc_shell> create_zrt_shield -help
Usage: create_zrt_shield# auto shield routing
[-mode new | unshield | reshield]
(mode to create new shield, or unshield, or reshield specified nets; (default new))
[-with_ground net_name]
(shield nets with specific P/G net; (default is ground net))
[-nets {collection_of_nets}]
(list of nets to shield; (default is nets with shielding rules are only shielded))
[-ignore_shielding_net_pins (false|true)]
(don't create tie-off connection to P/G pins of cells; (default false))
[-ignore_shielding_net_rails (false|true)]
(don't create tie-off connection to standard cell rails; (default false))
[-coaxial_below (false|true)]
(create coaxial shielding below the shielded segment layer; (default false))
[-coaxial_above (false|true)]
(create coaxial shielding above the shielded segment layer; (default false))

自己研究吧，可能可以的

这种连线可以放到route阶段再连，route的时候一开始就先连这些线好了。
floorplan阶段就有signal连线可能会对后续的place cts有影响