[HDL] Add dual-port RAM 1024x8 bit HDL decription as a primitive module of OpenFPGA cells

openfpga_flow/openfpga_cell_library/verilog/dpram8k.v

@@ -0,0 +1,61 @@
+//-----------------------------------------------------
+// Design Name : dpram_1024x8
+// File Name   : dpram8.v
+// Function    : Wrapper module of dual port RAM 1024 addresses x 8 bit
+// Coder       : Xifan tang
+//-----------------------------------------------------
+module dpram_1024x8 (
+  input clk,
+  input wen,
+  input ren,
+  input[0:9] waddr,
+  input[0:9] raddr,
+  input[0:7] data_in,
+  output[0:7] data_out );
+
+    dpram_1024x8_core memory_0 (
+      .wclk      (clk),
+      .wen       (wen),
+      .waddr     (waddr),
+      .data_in   (data_in),
+      .rclk      (clk),
+      .ren       (ren),
+      .raddr     (raddr),
+      .data_out  (data_out) );
+
+endmodule
+
+//-----------------------------------------------------
+// Design Name : dpram_1024x8_core
+// File Name   : dpram8.v
+// Function    : Core module of dual port RAM 1024 addresses x 8 bit
+// Coder       : Xifan tang
+//-----------------------------------------------------
+module dpram_1024x8_core (
+  input wclk,
+  input wen,
+  input [0:9] waddr,
+  input [0:7] data_in,
+  input rclk,
+  input ren,
+  input [0:9] raddr,
+  output [0:7] data_out );
+
+  reg[0:7] ram[0:1023];
+  reg[0:7] internal;
+
+  assign data_out = internal;
+
+  always @(posedge wclk) begin
+    if(wen) begin
+      ram[waddr] <= data_in;
+    end
+  end
+
+  always @(posedge rclk) begin
+    if(ren) begin
+      internal <= ram[raddr];
+    end
+  end
+
+endmodule