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lab_15/src/dffre.v

+module dffre(d, en, r, clk, q);
+    parameter n = 1;
+    input en, r, clk;
+    input [n-1:0] d;
+    output reg[n-1:0] q;
+    always @(posedge clk)
+        if (r) q = {n{1'b0}};
+        else if(en) q = d;
+            else q = q;
+endmodule // dffre
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