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An in port represents an external input to your logic. It can't be driven internally. What do you want to achieve?
thanks for replies.i am trying to debug my VHDL program, i use a simulator for this.how can i give values to in port for debuging?
In a simulator, the design under test will be instantiated in a testbench. There you can drive input and inout ports and also force internal signals, if necessary.
thank you, i will try to do UUT issue in the simulator.
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