/******************************************************************************/ 
/*                                                                            */ 
/* Copyright (c) 1999 Sun Microsystems, Inc. All rights reserved.             */ 
/*                                                                            */ 
/* The contents of this file are subject to the current version of the Sun    */ 
/* Community Source License, microSPARCII ("the License"). You may not use    */ 
/* this file except in compliance with the License.  You may obtain a copy    */ 
/* of the License by searching for "Sun Community Source License" on the      */ 
/* World Wide Web at http://www.sun.com. See the License for the rights,      */ 
/* obligations, and limitations governing use of the contents of this file.   */ 
/*                                                                            */ 
/* Sun Microsystems, Inc. has intellectual property rights relating to the    */ 
/* technology embodied in these files. In particular, and without limitation, */ 
/* these intellectual property rights may include one or more U.S. patents,   */ 
/* foreign patents, or pending applications.                                  */ 
/*                                                                            */ 
/* Sun, Sun Microsystems, the Sun logo, all Sun-based trademarks and logos,   */ 
/* Solaris, Java and all Java-based trademarks and logos are trademarks or    */ 
/* registered trademarks of Sun Microsystems, Inc. in the United States and   */ 
/* other countries. microSPARC is a trademark or registered trademark of      */ 
/* SPARC International, Inc. All SPARC trademarks are used under license and  */ 
/* are trademarks or registered trademarks of SPARC International, Inc. in    */ 
/* the United States and other countries. Products bearing SPARC trademarks   */ 
/* are based upon an architecture developed by Sun Microsystems, Inc.         */ 
/*                                                                            */ 
/******************************************************************************/ 
//  @(#)mulselctl.v	1.1  4/7/92
//

module MulSelCtl (notMult, Shifted, Pos, Zero, ACI);
               
input [2:0] notMult;
output Shifted, Zero, Pos, ACI;
//
// Mult 0 0 0 
// ACI is Actual Carry In
// Shifted is 1

ME_XOR2_B xnr7 (notMult[1], notMult[0], Shifted);

/* Feedthrough */
/* wire Negative = Mult[2]; */
con1 g00 (notMult[2], Pos);

ME_INV_A g01 (notMult[2], Negative);

// assert ACI if subtracting
ME_OR2_B cz1 (notMult[0], notMult[1], notSwig);
ME_AND2  cz2  (Negative, notSwig, ACI);		// 2 gates

//ME_INV_B g02 (Negative, notMult2);
// all ones or all zeros gives zero
ME_OR3_B nzr5 (notMult[2], notMult[0], notMult[1], notPos0);
ME_NAND3 nzr6 (notMult[2], notMult[1], notMult[0], notNeg0);
ME_NAND2_B nzr8 (notNeg0, notPos0,          Zero);

endmodule