MIG デザインを Virtex-5 TXT デバイスのその中央列のバンクを使用して生成すると、配線制約が不正になります。この場合は PAR の実行中に次と類似した警告メッセージが表示されます。
INFO:ParHelpers:197 - Number of "Exact" mode Directed Routing Constraints: 64 WARNING:ParHelpers:198 - One or more "EXACT" mode Directed Routing constrained net(s) were not successfully routed according to the constraint(s). The router attempted to route the net(s) without regard to the constraint. The number of nets found with Directed Routing Constraints: 64, number successfully routed using the constraints: 16, number failed: 48. The failed nets are listed below. Please use FPGA Editor to determine the cause of the failure. Net u_ddr2_top_0/u_mem_if_top/u_phy_top/u_phy_io/gen_dq[1].u_iob_dq/stg1_out_fall_0s Net u_ddr2_top_0/u_mem_if_top/u_phy_top/u_phy_io/gen_dq[1].u_iob_dq/stg1_out_rise_0s Net u_ddr2_top_0/u_mem_if_top/u_phy_top/u_phy_io/gen_dq[8].u_iob_dq/stg1_out_rise_0m Net u_ddr2_top_0/u_mem_if_top/u_phy_top/u_phy_io/gen_dq[8].u_iob_dq/stg1_out_fall_0m