diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_reset/counter.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_reset/counter.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_reset/counter.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_reset/counter.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_reset/counter_tb.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_reset/counter_tb.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_reset/counter_tb.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_reset/counter_tb.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_resetb/counter.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_resetb/counter.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_resetb/counter.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_resetb/counter.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_resetb/counter_tb.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_resetb/counter_tb.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter_128bit_async_resetb/counter_tb.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_128bit_async_resetb/counter_tb.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock.act b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock.act
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock.act
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock.act
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock.blif b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock.blif
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock.blif
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock.blif
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock_post_yosys.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock_post_yosys.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock_post_yosys.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock_post_yosys.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock_tb.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock_tb.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter4bit_2clock/counter4bit_2clock_tb.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_4bit_2clock/counter4bit_2clock_tb.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter_async_reset/counter.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_reset/counter.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter_async_reset/counter.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_reset/counter.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter_async_reset/counter_tb.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_reset/counter_tb.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter_async_reset/counter_tb.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_reset/counter_tb.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter.v
new file mode 100644
index 000000000..3d929091d
--- /dev/null
+++ b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter.v
@@ -0,0 +1,25 @@
+///////////////////////////////////////////
+//  Functionality: Counter with asynchronous reset
+//  Author:        Xifan Tang
+////////////////////////////////////////
+
+module counter (
+	clk,
+	resetb,
+	result
+);
+
+	input clk;
+	input resetb;
+	output [7:0] result;
+
+	reg [7:0] result;
+
+	always @(posedge clk or negedge resetb)
+	begin
+		if (!resetb) 
+			result = 0;		
+		else 
+			result = result + 1;
+	end
+endmodule		
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter_tb.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter_tb.v
new file mode 100644
index 000000000..8813aa0c4
--- /dev/null
+++ b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter_tb.v
@@ -0,0 +1,25 @@
+module counter_tb;
+
+  reg clk, resetb;
+  wire [7:0] result;
+
+  counter DUT(
+    .clk(clk), 
+    .resetb(resetb), 
+    .result(result)
+  );
+  
+  initial begin
+    #0 resetb = 1'b0; clk = 1'b0;
+    #100 resetb = 1'b1;
+  end
+
+  always begin
+    #10 clk = ~clk;
+  end
+  
+  initial begin
+    #5000 $stop;
+  end
+
+endmodule
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter/counter.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_sync_reset/counter.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter/counter.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_sync_reset/counter.v
diff --git a/openfpga_flow/benchmarks/micro_benchmark/counter/counter_tb.v b/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_sync_reset/counter_tb.v
similarity index 100%
rename from openfpga_flow/benchmarks/micro_benchmark/counter/counter_tb.v
rename to openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_sync_reset/counter_tb.v