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3.x FPGA Express - ERROR: "Prefix of name can not be interpreted as a subprogram or array. (VSS-568)"
Keywords: FPGA Express, prefix, subprogram, array
When I perform a syntax check or synthesize my code, the following error is reported in FPGA Express:
"Prefix of name can not be interpreted as a subprogram or array. (VSS-568)
Error: <path>\<file_name> line <line_number>"
What does this error mean?
This error usually indicates that you are attempting to index a single bit or non-indexable variable. Ensure that the variable you are indexing is an std_logic_vector instead of an std_logic.
signal bus: std_logic;
out <= bus(0);
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