Subversion Repositories or1k

// $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/mp3/lib/xilinx/unisims/RAM16X1S.v,v 1.1.1.1 2001-11-04 18:59:50 lampret Exp $

/*

FUNCTION        : 16x1 Static RAM with synchronous write capability

*/

`timescale  100 ps / 10 ps

`celldefine

module RAM16X1S (O, A0, A1, A2, A3, D, WCLK, WE);

    parameter cds_action = "ignore";

    parameter INIT = 16'h0000;

    output O;

    input  A0, A1, A2, A3, D, WCLK, WE;

    reg  mem [15:0];

    reg  [4:0] count;

    wire [3:0] adr;

    wire d_in, wclk_in, we_in;

    buf b_d    (d_in, D);

    buf b_wclk (wclk_in, WCLK);

    buf b_we   (we_in, WE);

    buf b_a3 (adr[3], A3);

    buf b_a2 (adr[2], A2);

    buf b_a1 (adr[1], A1);

    buf b_a0 (adr[0], A0);

    buf b_o (O, o_int);

    buf b_o_int (o_int, mem[adr]);

    initial

    begin

        for (count = 0; count < 16; count = count + 1)

            mem[count] <= INIT[count];

    end

    always @(posedge wclk_in)

    begin

        if (we_in == 1'b1)

            mem[adr] <= d_in;

    end

    specify

        if (WE)

            (WCLK => O) = (1, 1);

        (A3 => O) = (1, 1);

        (A2 => O) = (1, 1);

        (A1 => O) = (1, 1);

        (A0 => O) = (1, 1);

    endspecify

endmodule

`endcelldefine