1 files changed, 42 insertions, 0 deletions
diff --git a/tests/xilinx_ug901/fsm_1.v b/tests/xilinx_ug901/fsm_1.v
new file mode 100644
index 000000000..ee3571d0d
--- /dev/null
+++ b/tests/xilinx_ug901/fsm_1.v
@@ -0,0 +1,42 @@
+// State Machine with single sequential block
+//fsm_1.v
+module fsm_1(clk,reset,flag,sm_out);
+input clk,reset,flag;
+output reg sm_out;
+
+parameter s1 = 3'b000;
+parameter s2 = 3'b001;
+parameter s3 = 3'b010;
+parameter s4 = 3'b011;
+parameter s5 = 3'b111;
+
+reg [2:0] state;
+
+always@(posedge clk)
+  begin
+    if(reset)
+      begin
+        state <= s1;
+        sm_out  <= 1'b1;
+      end
+  else
+    begin
+     case(state)
+       s1: if(flag) 
+            begin 
+              state <= s2; 
+              sm_out <= 1'b1; 
+            end
+           else
+            begin
+              state <= s3;
+              sm_out <= 1'b0;
+            end
+       s2: begin state <= s4; sm_out <= 1'b0; end
+       s3: begin state <= s4; sm_out <= 1'b0; end
+       s4: begin state <= s5; sm_out <= 1'b1; end
+       s5: begin state <= s1; sm_out <= 1'b1; end
+     endcase
+    end
+ end
+endmodule