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-rw-r--r--manual/PRESENTATION_ExAdv/select.v15
1 files changed, 15 insertions, 0 deletions
diff --git a/manual/PRESENTATION_ExAdv/select.v b/manual/PRESENTATION_ExAdv/select.v
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+module test(clk, s, a, y);
+ input clk, s;
+ input [15:0] a;
+ output [15:0] y;
+ reg [15:0] b, c;
+
+ always @(posedge clk) begin
+ b <= a;
+ c <= b;
+ end
+
+ wire [15:0] state_a = (a ^ b) + c;
+ wire [15:0] state_b = (a ^ b) - c;
+ assign y = !s ? state_a : state_b;
+endmodule