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copied!<p>Let's say you have a LED matrix like this: <img src="https://i.stack.imgur.com/LHccj.png" alt="LED matrix schematic"></p> <p>To answer not your question, but your comment about " if u can at least show me how to make the blinking LED i will be grateful :)", we can do as this:</p> <pre><code>module blink (input wire clk, /* assuming a 50MHz clock in your trainer */ output wire anode, /* to be connected to RC7 */ output wire cathode); /* to be connected to RB7 */ reg [24:0] freqdiv = 25'h0000000; always @(posedge clk) freqdiv <= freqdiv + 1; assign cathode = 1'b0; assign anode = freqdiv[24]; endmodule </code></pre> <p>This will make the top left LED to blink at a rate of 1,4 blinks per second aproximately.</p> <p>This other example will show a running dot across the matrix, left to right, top to down:</p> <pre><code>module runningdot (input wire clk, /* assuming a 50MHz clock in your trainer */ output wire [7:0] anodes, /* to be connected to RC0-7 */ output wire [7:0] cathodes); /* to be connected to RB0-7 */ reg [23:0] freqdiv = 24'h0000000; always @(posedge clk) freqdiv <= freqdiv + 1; wire clkled = freqdiv[23]; reg [7:0] r_anodes = 8'b10000000; reg [7:0] r_cathodes = 8'b01111111; assign anodes = r_anodes; assign cathodes = r_cathodes; always @(posedge clkled) begin r_anodes <= {r_anodes[0], r_anodes[7:1]}; /* shifts LED left to right */ if (r_anodes == 8'b00000001) /* when the last LED in a row is selected... */ r_cathodes <= {r_cathodes[0], r_cathodes[7:1]}; /* ...go to the next row */ end endmodule </code></pre> <p>Your snake game, if using logic and not an embedded processor, is way much complicated than these examples, but it will use the same logic principles to drive the matrix.</p>

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