1 files changed, 11 insertions, 0 deletions
diff --git a/sn7421.v b/sn7421.v
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--- /dev/null
+++ b/sn7421.v
@@ -0,0 +1,11 @@
+`timescale 1ns/1ps
+module sn7421
+  #(parameter tPLH = 0, tPHL = 0)
+  (input [1:0]	A,
+   input [1:0]	B,
+   input [1:0]	C,
+   input [1:0]	D,
+   output [1:0]	Y);
+
+   assign #(tPLH, tPHL) Y = A & B & C & D;
+endmodule