Subversion Repositories mips789

 
module mem_array
    (
        input clk,
        input [31:0] pc_i,
        output [31:0] ins_o,
        input [3:0] wren,
        input [31:0]din,
        input [31:0]wr_addr_i,
        input [31:0]rd_addr_i,
        output [31:0]dout
    );
    wire [31:0] rd_addr,pc,wr_addr;
    wire [31:0]dout_w;
    assign dout = dout_w;
    assign rd_addr=rd_addr_i[31:2];
    assign wr_addr=wr_addr_i[31:2];
    assign pc= pc_i[31:2];
 
    ram2048x8_3 ram3(
                    .data_a(32'b0),
                    .wren_a(1'b0),
                    .address_a(pc),
                    .data_b(din[31:24]),
                    .address_b(wr_addr),
                    .wren_b(wren[3]),
                    .clock(clk),
                    .q_a(ins_o[31:24]),
                    .q_b(dout_w[31:24])
                );
 
    ram2048x8_2 ram2(
                    .data_a(32'b0),
                    .wren_a(1'b0),
                    .address_a(pc),
                    .data_b(din[23:16]),
                    .address_b(wr_addr),
                    .wren_b(wren[2]),
                    .clock(clk),
                    .q_a(ins_o[23:16]),
                    .q_b(dout_w[23:16])
                );
 
    ram2048x8_1 ram1(
                    .data_a(32'b0),
                    .wren_a(1'b0),
                    .address_a(pc),
                    .data_b(din[15:8]),
                    .address_b(wr_addr),
                    .wren_b(wren[1]),
                    .clock(clk),
                    .q_a(ins_o[15:8]),
                    .q_b(dout_w[15:8])
                );
 
    ram2048x8_0 ram0(
                    .data_a(32'b0),
                    .wren_a(1'b0),
                    .address_a(pc),
                    .data_b(din[7:0]),
                    .address_b(wr_addr),
                    .wren_b(wren[0]),
                    .clock(clk),
                    .q_a(ins_o[7:0]),
                    .q_b(dout_w[7:0])
                );
 
endmodule