added debug print states or rtl

hw/rtl/libs/VX_encoder_onehot.v

@@ -0,0 +1,25 @@
+`include "VX_define.vh"
+
+module VX_encoder_onehot #(
+    parameter N = 6
+) (
+    input wire [N-1:0] onehot,
+    output reg valid,
+    output reg [`LOG2UP(N)-1:0] value
+);
+    integer i;
+
+    always @(*) begin
+        valid = 1'b0;    
+        value = {`LOG2UP(N){1'bx}};                
+        for (i = 0; i < N; i++) begin
+            if (onehot[i]) begin
+                valid = 1'b1;
+                value = `LOG2UP(N)'(i);
+                break;
+            end
+        end
+    end
+    
+endmodule
+