/******************************************************************************/
/* */
/* 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 */
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/* obligations, and limitations governing use of the contents of this file. */
/* */
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/* 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 */
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/******************************************************************************/
// @(#)shiftleft.v 1.1 4/7/92
//
module ShiftLeft
(NI,
SLControl,
LIB,
SLResult);
input [`FracMSB:0] NI
;
input [3:0] SLControl
;
input [2:0] LIB
; // shifted operand for int or frac
output [`FracMSB:0] SLResult
;
wire [`FracMSB:0] N8
, N4
, N2
, N1
;
ME_TIEOFF toff (vdd
, gnd
);
ME_NMUX_2B_58 g23 (SLControl[3],
NI,
{LIB[2], LIB[1], LIB[0], NI[`FracMSB-11:0],
gnd, gnd, gnd, gnd, gnd, gnd, gnd, gnd},
N8); // False
ME_NMUX_2B_58 g24 (SLControl[2],
N8,
{N8[`FracMSB-4:0], vdd, vdd, vdd, vdd}, N4);
ME_NMUX_2B_58 g25 (SLControl[1],
N4,
{N4[`FracMSB-2:0], gnd, gnd},
N2); // False
ME_NMUX_2B_58 g26 (SLControl[0], N2, {N2[`FracMSB-1:0], vdd}, N1); // true
ME_INV_A_58 g27 (N1, SLResult); // false
endmodule
This page: |
Created: | Thu Aug 19 12:02:35 1999 |
| From: |
../../../sparc_v8/ssparc/fpu/fp_frac/rtl/shiftleft.v
|