Problem with generate statement in Verilog

Altera_Forum · ‎08-31-2010

I want to instantiate different modules controlled by an input "Mode".

Here are my code in Verilog:

generate case (Mode) 1: begin : case1

(instantiate module 1)

end

0: begin : case0

(instantiate module 0)

end

endcase

[/INDENT]endgenerate

Quartus II 9.1 gives an error

Error (10734): Verilog HDL error at Test.v(215): Mode is not a constant.

Does generate statement only use constant as conditions?

Altera_Forum · ‎08-31-2010

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Does generate statement only use constant as conditions?

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Obviously. Generate means building a particular design part once or repeatedly, or omit it. This must be determined at compile time. What do you want to achieve?

Altera_Forum · ‎08-31-2010

I try to make it work with different plug-in devices which require different timing signals. It seems the only way I can do is to instantiate both modules and use muxers.