From e2138d8d0f3a7d22234b5b3a3497acce3fac75d4 Mon Sep 17 00:00:00 2001
From: David Harris <david_harris@hmc.edu>
Date: Tue, 23 Aug 2022 19:34:45 -0700
Subject: [PATCH] bram synthesis test

---
 .../src/generic/flop/bram1p1rw_64x128.sv      | 67 +++++++++++++++++++
 .../src/generic/flop/bram1p1rw_64x128wrap.sv  | 29 ++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 pipelined/src/generic/flop/bram1p1rw_64x128.sv
 create mode 100644 pipelined/src/generic/flop/bram1p1rw_64x128wrap.sv

diff --git a/pipelined/src/generic/flop/bram1p1rw_64x128.sv b/pipelined/src/generic/flop/bram1p1rw_64x128.sv
new file mode 100644
index 000000000..48d28d719
--- /dev/null
+++ b/pipelined/src/generic/flop/bram1p1rw_64x128.sv
@@ -0,0 +1,67 @@
+///////////////////////////////////////////
+// block ram model should be equivalent to srsam.
+//
+// Written: Ross Thompson
+// March 29, 2022
+// Modified: Based on UG901 vivado documentation.
+//
+// Purpose: On-chip SIMPLERAM, external to core
+// 
+// A component of the Wally configurable RISC-V project.
+// 
+// Copyright (C) 2021 Harvey Mudd College & Oklahoma State University
+//
+// MIT LICENSE
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this 
+// software and associated documentation files (the "Software"), to deal in the Software 
+// without restriction, including without limitation the rights to use, copy, modify, merge, 
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
+// to whom the Software is furnished to do so, subject to the following conditions:
+//
+//   The above copyright notice and this permission notice shall be included in all copies or 
+//   substantial portions of the Software.
+//
+//   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//   INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
+//   PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
+//   BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
+//   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 
+//   OR OTHER DEALINGS IN THE SOFTWARE.
+////////////////////////////////////////////////////////////////////////////////////////////////
+
+// This model actually works correctly with vivado.
+
+`include "wally-config.vh"
+
+module bram1p1rw_64x128
+  #(
+	//--------------------------------------------------------------------------
+	parameter NUM_COL = 16,
+	parameter COL_WIDTH = 8,
+	parameter ADDR_WIDTH = 6,
+	// Addr Width in bits : 2 *ADDR_WIDTH = RAM Depth
+	parameter DATA_WIDTH = NUM_COL*COL_WIDTH // Data Width in bits
+	//----------------------------------------------------------------------
+	) (
+	   input logic 					 clk,
+	   input logic 					 we,
+	   input logic [NUM_COL-1:0] 	 bwe,
+	   input logic [ADDR_WIDTH-1:0]  addr,
+	   output logic [DATA_WIDTH-1:0] dout,
+	   input logic [DATA_WIDTH-1:0]  din
+	   );
+  // Core Memory
+  logic [DATA_WIDTH-1:0] 			 RAM [(2**ADDR_WIDTH)-1:0];
+  integer 							 i;
+
+  always @ (posedge clk) begin
+	dout <= RAM[addr];    
+	if(we) begin
+	  for(i=0;i<NUM_COL;i=i+1) begin
+		if(bwe[i]) begin
+		  RAM[addr][i*COL_WIDTH +: COL_WIDTH] <= din[i*COL_WIDTH +:COL_WIDTH];
+		end
+	  end
+	end
+  end
+endmodule // bytewrite_tdp_ram_rf
diff --git a/pipelined/src/generic/flop/bram1p1rw_64x128wrap.sv b/pipelined/src/generic/flop/bram1p1rw_64x128wrap.sv
new file mode 100644
index 000000000..04bc3e762
--- /dev/null
+++ b/pipelined/src/generic/flop/bram1p1rw_64x128wrap.sv
@@ -0,0 +1,29 @@
+module bram1p1rw_64x128wrap
+  #(
+	//--------------------------------------------------------------------------
+	parameter NUM_COL = 16,
+	parameter COL_WIDTH = 8,
+	parameter ADDR_WIDTH = 6,
+	// Addr Width in bits : 2 *ADDR_WIDTH = RAM Depth
+	parameter DATA_WIDTH = NUM_COL*COL_WIDTH // Data Width in bits
+	//----------------------------------------------------------------------
+	) (
+	   input logic 					 clk,
+	   input logic 					 we,
+	   input logic [NUM_COL-1:0] 	 bwe,
+	   input logic [ADDR_WIDTH-1:0]  addr,
+	   output logic [DATA_WIDTH-1:0] dout,
+	   input logic [DATA_WIDTH-1:0]  din
+	   );
+
+    always_ff @(posedge clk) begin 
+        we2 <= we;
+        bwe2 <= bwe;
+        addr2 <= addr;
+        din2 <= din;
+        dout2 <= dout;
+    end
+
+    bram1p1rw_64x128wrap dut(clk, we2, bwe2, addr2, dout, din2);
+
+endmodule