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// Modified from: // https://github.com/tinyfpga/TinyFPGA-A-Series/tree/master/template_a2 module top ( (* LOC="13" *) output pin1, (* LOC="21" *) input clk ); reg [23:0] led_timer; always @(posedge clk) begin led_timer <= led_timer + 1; end // left side of board assign pin1 = led_timer[23]; endmodule g/iCE40/yosys' title='iCE40/yosys Git repository'/>