From bd6c4a9b916cd36890ebec72fae50555dfe6e7ba Mon Sep 17 00:00:00 2001
From: "Pavel V. Shatov (Meister)" <meisterpaul1@yandex.ru>
Date: Tue, 25 Jul 2017 01:21:28 +0300
Subject: Trying to fix the bug during calculation of SN in systolic
 multiplier.

---
 src/tb/tb_exponentiator.v       |  2 +-
 src/tb/tb_systolic_multiplier.v |  6 +++---
 src/tb/tb_wrapper.v             | 44 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+), 4 deletions(-)
 create mode 100644 src/tb/tb_wrapper.v

(limited to 'src/tb')

diff --git a/src/tb/tb_exponentiator.v b/src/tb/tb_exponentiator.v
index c854e65..c9a9f7e 100644
--- a/src/tb/tb_exponentiator.v
+++ b/src/tb/tb_exponentiator.v
@@ -207,7 +207,7 @@ module tb_exponentiator;
 		rst_n = 1'b1;
 		#100;
 		
-		test_exponent_384(M_384, D_384, FACTOR_384, N_384, N_COEFF_384, S_384);
+		//test_exponent_384(M_384, D_384, FACTOR_384, N_384, N_COEFF_384, S_384);
 		test_exponent_512(M_512, D_512, FACTOR_512, N_512, N_COEFF_512, S_512);
 		
 	end
diff --git a/src/tb/tb_systolic_multiplier.v b/src/tb/tb_systolic_multiplier.v
index 33d1e01..61dc6f3 100644
--- a/src/tb/tb_systolic_multiplier.v
+++ b/src/tb/tb_systolic_multiplier.v
@@ -57,7 +57,7 @@ module tb_systolic_multiplier;
 		//
 		// Model Settings
 		//
-	localparam NUM_ROUNDS = 10;
+	localparam NUM_ROUNDS = 43;
 	
 	
 		//
@@ -152,7 +152,7 @@ module tb_systolic_multiplier;
 	modexpa7_systolic_multiplier #
 	(
 		.OPERAND_ADDR_WIDTH		(4),	// 32 * (2**4) = 512-bit operands
-		.SYSTOLIC_ARRAY_POWER	(2)	// 2 ** 2 = 4-tap array
+		.SYSTOLIC_ARRAY_POWER	(3)	// 2 ** 2 = 4-tap array
 	)
 	uut
 	(
@@ -193,7 +193,7 @@ module tb_systolic_multiplier;
 		#100;
 		
 		test_systolic_multiplier_384(M_384, N_384, N_COEFF_384, FACTOR_384, COEFF_384);
-		test_systolic_multiplier_512(M_512, N_512, N_COEFF_512, FACTOR_512, COEFF_512);
+		//test_systolic_multiplier_512(M_512, N_512, N_COEFF_512, FACTOR_512, COEFF_512);
 		
 	end
       
diff --git a/src/tb/tb_wrapper.v b/src/tb/tb_wrapper.v
new file mode 100644
index 0000000..bd8dbf1
--- /dev/null
+++ b/src/tb/tb_wrapper.v
@@ -0,0 +1,44 @@
+`timescale 1ns / 1ps
+
+module tb_wrapper;
+
+	// Inputs
+	reg clk;
+	reg rst_n;
+	reg cs;
+	reg we;
+	reg [7:0] address;
+	reg [31:0] write_data;
+
+	// Outputs
+	wire [31:0] read_data;
+
+	// Instantiate the Unit Under Test (UUT)
+	modexpa7_wrapper uut (
+		.clk(clk), 
+		.rst_n(rst_n), 
+		.cs(cs), 
+		.we(we), 
+		.address(address), 
+		.write_data(write_data), 
+		.read_data(read_data)
+	);
+
+	initial begin
+		// Initialize Inputs
+		clk = 0;
+		rst_n = 0;
+		cs = 0;
+		we = 0;
+		address = 0;
+		write_data = 0;
+
+		// Wait 100 ns for global reset to finish
+		#100;
+        
+		// Add stimulus here
+
+	end
+      
+endmodule
+
-- 
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