Vivado 生成比特流问题： *[DRC NSTD-1] Unspecified I/O Standard: 210 out of 210 logical ports use I/O standa_[drc nstd-1] unspecified i/o standard: 201 out of

Vivado 生成比特流问题： [DRC NSTD-1] Unspecified I/O Standard: 210 out of 210 logical ports use I/O standard (IOSTANDARD) value ‘DEFAULT’, instead of a user assigned specific value.

Vivado 生成比特流问题

[DRC NSTD-1] Unspecified I/O Standard: 210 out of 210 logical ports use I/O standard (IOSTANDARD) value ‘DEFAULT’, instead of a user assigned specific value. This may cause I/O contention or incompatibility with the board power or connectivity affecting performance, signal integrity or in extreme cases cause damage to the device or the components to which it is connected. To correct this violation, specify all I/O standards. This design will fail to generate a bitstream unless all logical ports have a user specified I/O standard value defined. To allow bitstream creation with unspecified I/O standard values (not recommended), use this command: set_property SEVERITY {Warning} [get_drc_checks NSTD-1]. NOTE: When using the Vivado Runs infrastructure (e.g. launch_runs Tcl command), add this command to a .tcl file and add that file as a pre-hook for write_bitstream step for the implementation run. Problem ports: Add_result[31], Add_result[30], Add_result[29], Add_result[28], Add_result[27], Add_result[26], Add_result[25], Add_result[24], Add_result[23], Add_result[22], Add_result[21], Add_result[20], Add_result[19], Add_result[18], Add_result[17]… and (the first 15 of 73 listed).

解决办法

检查sources中的top文件是否正确

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