mirror of https://github.com/YosysHQ/icestorm.git
25 lines
459 B
Verilog
25 lines
459 B
Verilog
/* Binary counter displayed on LEDs (the 4 green ones on the right).
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* Changes value about once a second.
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*/
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module top (
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input clk,
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output LED2,
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output LED3,
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output LED4,
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output LED5
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);
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localparam BITS = 4;
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localparam LOG2DELAY = 22;
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reg [BITS+LOG2DELAY-1:0] counter = 0;
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reg [BITS-1:0] outcnt;
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always @(posedge clk) begin
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counter <= counter + 1;
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outcnt <= counter >> LOG2DELAY;
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end
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assign {LED2, LED3, LED4, LED5} = outcnt;
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endmodule
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