// ========== Copyright Header Begin ========================================== // // OpenSPARC T2 Processor File: niu_pio_reset.v // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved // 4150 Network Circle, Santa Clara, California 95054, U.S.A. // // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; version 2 of the License. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // For the avoidance of doubt, and except that if any non-GPL license // choice is available it will apply instead, Sun elects to use only // the General Public License version 2 (GPLv2) at this time for any // software where a choice of GPL license versions is made // available with the language indicating that GPLv2 or any later version // may be used, or where a choice of which version of the GPL is applied is // otherwise unspecified. // // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, // CA 95054 USA or visit www.sun.com if you need additional information or // have any questions. // // ========== Copyright Header End ============================================ /********************************************************************* * * niu_pio_reset.v * * Reset Block, includes LogicVision Reset Gating * * Orignal Author(s): Rahoul Puri * Modifier(s): Maya Suresh * Project(s): Neptune/Niagara 2 * * Copyright (c) 2003 Sun Microsystems, Inc. * * All Rights Reserved. * * This verilog model is the confidential and proprietary property of * Sun Microsystems, Inc., and the possession or use of this model * requires a written license from Sun Microsystems, Inc. * **********************************************************************/ module niu_pio_reset ( SysClk, niu_reset_l, FUNC_MODE, Reset_L ); // Clock & Reset input SysClk; input niu_reset_l; input FUNC_MODE; output Reset_L; /*--------------------------------------------------------------*/ // Registers & Wires /*--------------------------------------------------------------*/ wire iReset_L; reg resetDlyOneCycle_l; /*--------------------------------------------------------------*/ // Assigns /*--------------------------------------------------------------*/ assign iReset_L = ((resetDlyOneCycle_l & FUNC_MODE) | ~FUNC_MODE); /*--------------------------------------------------------------*/ // Control Logic /*--------------------------------------------------------------*/ always @ (posedge SysClk) begin resetDlyOneCycle_l <= niu_reset_l; end `ifdef NEPTUNE RTS_ROOT_BUF pio_reset_CTS_ROOT (.Z(Reset_L) ,.A(iReset_L)); `else assign Reset_L = iReset_L; `endif endmodule