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// $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/mp3/lib/xilinx/unisims/SRL16_1.v,v 1.1.1.1 2001-11-04 19:00:00 lampret Exp $
 
/*
 
FUNCTION	: 16 bit Shift Register LUT with Negative_edge Clock
		 and Clock Enable
 
*/
 
`timescale  100 ps / 10 ps
 
`celldefine
 
module SRL16_1 (Q, A0, A1, A2, A3, CLK, D);
 
    parameter cds_action = "ignore";
 
    parameter INIT = 16'h0000;
 
    output Q;
 
    input  A0, A1, A2, A3, CLK, D;
 
    reg  [5:0]  count;
    reg  [15:0] data;
    wire [3:0]  addr;
    wire	clk_;
    wire	q_int;
 
    buf b_a3 (addr[3], A3);
    buf b_a2 (addr[2], A2);
    buf b_a1 (addr[1], A1);
    buf b_a0 (addr[0], A0);
 
    buf b_q_int (q_int, data[addr]);
    buf b_q (Q, q_int);
 
    not i_c (clk_, CLK);
 
    initial
    begin
	while (CLK === 1'bx)
	    #2;
	for (count = 0; count < 16; count = count + 1)
	    data[count] <= INIT[count];
    end
 
    always @(posedge clk_)
    begin
	{data[15:0]} <= {data[14:0], D};
    end
 
    specify
	(CLK => Q) = (1, 1);
    endspecify
 
endmodule
 
`endcelldefine