Subversion Repositories or1k

// $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/mp3/lib/xilinx/unisims/FDRSE_1.v,v 1.1.1.1 2001-11-04 18:59:47 lampret Exp $
 
/*
 
FUNCTION	: D-FLIP-FLOP with sync reset, sync set and clock enable
 
*/
 
`timescale  100 ps / 10 ps
 
`celldefine
 
module FDRSE_1 (Q, C, CE, D, R, S);
 
    parameter cds_action = "ignore";
    parameter INIT = 1'b0;
 
    output Q;
    reg    q_out;
 
    input  C, CE, D, R, S;
 
    tri0 GSR = glbl.GSR;
 
    buf B1 (Q, q_out);
 
	always @(GSR)
	    if (GSR)
		assign q_out = INIT;
	    else
		deassign q_out;
 
	always @(negedge C)
	    if (R)
		q_out <= 0;
	    else if (S)
		q_out <= 1;
	    else if (CE)
		q_out <= D;
 
    specify
	if (R)
	    (negedge C => (Q +: 1'b0)) = (1, 1);
	if (!R && S)
	    (negedge C => (Q +: 1'b1)) = (1, 1);
	if (!R && !S && CE)
	    (negedge C => (Q +: D)) = (1, 1);
    endspecify
 
endmodule
 
`endcelldefine