/******************************************************************************/
/* */
/* 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. */
/* */
/******************************************************************************/
/***************************************************************************
****************************************************************************
***
*** Program File: @(#)column1.v
***
****************************************************************************
****************************************************************************/
// @(#)column1.v 1.1 4/8/92
//
// **************************************************************
// column1 -- 2 to 2 compression for column 1.
// **************************************************************
module column1
(
sum, // compressed sum
carry, // compressed carry
cout1, // non-ripple carry-out
cin1, // non-ripple carry-in
x, // multiplicand
y, // multiplier
pass, // pass = {0,1}
fbs, // feedback sum
fbc // feedback carry
);
//prop CELLCLASS "MODULE"
//prop GENERATOR "DataPath"
//prop TERMPLACE "BIT"
supply0 GND
;
//prop NETTYPE "GROUND"
output sum
;
//prop TERMPLACE "BOT"
output carry
;
//prop TERMPLACE "BOT"
output cout1
;
//prop TERMPLACE "LEFT"
input cin1
;
//prop TERMPLACE "RIGHT"
input [27:26] x
;
//prop TERMPLACE "TOP"
input [1:0] y
;
//prop TERMPLACE "LEFT"
input pass
;
//prop TERMPLACE "LEFT"
input fbs
;
//prop TERMPLACE "BOT"
input fbc
;
//prop TERMPLACE "BOT"
wire [3:0] p
; // partial products
wire cin1;
wire s
; // internal sum's
wire pass;
wire fbs;
wire fbc;
pproduct21 pA (
p[3:0],
x[27:26],
y[1:0],
pass,
fbs,
fbc
);
//prop TERMPLACE "POS=0"
add4 aA (
sum,
carry,
cout1,
p[0],
p[1],
p[2],
p[3],
cin1
);
//prop TERMPLACE "POS=1"
endmodule
This page: |
Created: | Thu Aug 19 12:02:31 1999 |
| From: |
../../../sparc_v8/ssparc/fpu/fp_fpm/rtl/column1.v
|