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rtl/ip/APB_UART/URT/raminfr.v

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+/*------------------------------------------------------------------------------
+--------------------------------------------------------------------------------
+Copyright (c) 2016, Loongson Technology Corporation Limited.
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this 
+list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, 
+this list of conditions and the following disclaimer in the documentation and/or
+other materials provided with the distribution.
+
+3. Neither the name of Loongson Technology Corporation Limited nor the names of 
+its contributors may be used to endorse or promote products derived from this 
+software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+DISCLAIMED. IN NO EVENT SHALL LOONGSON TECHNOLOGY CORPORATION LIMITED BE LIABLE
+TO ANY PARTY FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 
+GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
+------------------------------------------------------------------------------*/
+
+module raminfr(clk, we, a, dpra, di, dpo); 
+
+parameter addr_width = 4;
+parameter data_width = 8;
+parameter depth = 16;
+
+input clk;   
+input we;   
+input  [addr_width-1:0] a;   
+input  [addr_width-1:0] dpra;   
+input  [data_width-1:0] di;   
+output [data_width-1:0] dpo;   
+reg    [data_width-1:0] ram [depth-1:0]; 
+
+wire   [data_width-1:0] di;   
+wire   [addr_width-1:0] a;   
+wire   [addr_width-1:0] dpra;   
+ 
+always @(posedge clk) begin
+    if (we)   
+      ram[a] <= di;   
+end   
+reg    [data_width-1:0] dpo;
+
+always @(posedge clk)
+    dpo <= ram[dpra];
+
+endmodule 
+