Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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I have wrote a code for UART using FSM.I am getting the above error when I am using VWF .I known the part of the code that is causing the problem. TX_DATA_BITS. But can't understand why.
Can you show the full error message and a screenshot of your waveform? My guess is that add_count is going to 8 in the combinatorial logic before it is reset, which would exceed the number of bits in S.
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