verilog/c0_rtl/veri_bellegi_sram.v

// SPDX-FileCopyrightText: 2020 Efabless Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// SPDX-License-Identifier: Apache-2.0
`timescale 1ns / 1ps

// Tek RW portlu SRAM bellegi modeller

module veri_bellegi_sram
(
    input           [12:0]                          addra                   ,
    input                                           clka                    ,
    input           [31:0]                          dina                    ,
    input                                           ena                     ,
    input           [3:0]                           wea                     ,

    output          [31:0]                          douta                   ,

   // To SRAM outside c0's macro
    output                                          csb0                    ,
    output                                          web0                    ,
    output          [3:0]                           wmask0                  ,
    output          [12:0]                          addr0                   ,
    output          [31:0]                          din0                    ,
    input           [31:0]                          dout0                   ,

    output                                          csb1                    ,
    output          [12:0]                          addr1                   ,
    input           [31:0]                          dout1                         

);

    assign      csb0        =           ~(ena&(|wea))       ;
    assign      web0        =           ~(|wea)             ;
    assign      wmask0      =           wea                 ;
    
    assign      addr0       =           addra               ;
    assign      din0        =           dina                ;
    //assign      dout0       =           32'b0           ;

    assign      csb1        =           ~(ena&(~(|wea)))    ;
    assign      addr1       =           addra               ;
    assign      douta       =           dout1               ;

endmodule