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-rw-r--r--atk16_fpga/bram.v37
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-`default_nettype none
-
-/*
- * Copyright 2020 Brian O'Dell
- *
- * 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.
- *
- */
-
-module bram (
- input clk,
- input [15:0] addr,
- input cs_n,
- input wr_n,
- input rd_n,
- input [15:0] bram_data_in,
- output reg [15:0] bram_data_out
-);
-
- reg [15:0] mem [16'hEFFF:0];
-
- always @(posedge clk)
- if (cs_n == 1'b0) begin
- if (wr_n == 1'b0) mem[addr] <= bram_data_in;
- if (rd_n == 1'b0) bram_data_out <= mem[addr];
- end
- endmodule