Semiconductors

         THIS STOCKHOLDER SUPPORT AGREEMENT (the "Agreement") is entered into as
of December 2, 2002, by and among OLIN ACQUISITION CORPORATION, a Delaware
corporation ("Buyer"), VARI-L COMPANY, INC., a Colorado corporation ("Seller"),
and the undersigned stockholder of Seller ("Stockholder").

                                    RECITALS

         A. Buyer, Seller and Sirenza Microdevices, Inc., a Delaware corporation
and the corporate parent of Buyer ("Parent"), are entering into an Asset
Purchase Agreement of even date herewith (the " . . .

                                MITEL CORPORATION

                                       and

                               3755461 CANADA INC.

                                       and

                             DR. TERENCE H. MATTHEWS

--------------------------------------------------------------------------------

                              ACQUISITION AGREEMENT

--------------------------------------------------------------------------------
<PAGE>

ARTICLE I    ..................................................................5
1            ....INTERPRETATION.............. . . .

                                    AGREEMENT

                                       AND

                             PLAN OF REORGANIZATION

                                      AMONG

                            VIRAGE LOGIC CORPORATION,

                            IN-CHIP ACQUISITION, INC.

                                       AND

                              IN-CHIP SYSTEMS, INC.

                                   May 4, 2002



 THE SYMBOL "[***]" IS USED TO INDICATE THAT A PORTION OF THE EXHIBIT HAS BEEN
  OMITTED AND FILED SEPARATELY WITH THE COMMISSION. CONFIDENTIAL  . . .

Exhibit 4.8

(Translation)

MERGER AGREEMENT

THIS MERGER AGREEMENT (the “Agreement”) is made and entered into as of February 26, 2004 (the “Effective Date”) by and between

United Microelectronics Corporation, a Republic of China (“R.O.C.”) company limited by shares with its registered offices at No.3, Li-Hsin Rd. II, Hsinchu Science Park, Hsinchu, Taiwan, R.O.C (“UMC”), and

SiS  . . .

ASSET PURCHASE AGREEMENT AND PLAN OF REORGANIZATION

BY AND AMONG

QUICKLOGIC CORPORATION

Q ACQUISITION CORPORATION

V3 SEMICONDUCTOR INC.

AND

V CUBED CORPORATION

Dated as of April 17, 2001

TABLE OF CONTENTS

MERGER AGREEMENT AND PLAN OF REORGANIZATION

THIS MERGER AGREEMENT AND PLAN OF REORGANIZATION (this �Agreement�) is dated as of December 18, 2003, and is entered into by and among Advanced Research & Applications Corporation, a California corporation (�ARACOR�), Robert A. Armistead (�Individual�), OSI Subsidiary, Inc., a California corporation (�OSI Subsidiary�), OSI Systems, Inc., a California corporation (�OSI�) with reference to the following facts:

A. OSI and OSI Subsidiary wish to acquire the Business (as hereinafter defined) by merging OSI Subsidiary into  . . .

<DESCRIPTION>EXHIBIT 2.1
<TEXT>

<PAGE>

                                MERGER AGREEMENT

        This Merger Agreement (the "MERGER AGREEMENT") is entered into as of
August 31, 2000 by and among Monolithic System Technology, Inc., a California
corporation ("MOSYS CALIFORNIA"), and Monolithic System Technology, Inc., a
Delaware corporation and a wholly-owned subsidiary of MoSys California ("MOSYS
DELAWARE" and, together with MoSys California, the "PARTIES").

                                     . . .

                                MERGER AGREEMENT

         This Merger Agreement (the "MERGER AGREEMENT") is entered into as of
________ __, 2000 by and among Monolithic System Technology, Inc., a California
corporation ("MOSYS CALIFORNIA"), and Monolithic System Technology, Inc., a
Delaware corporation and a wholly-owned subsidiary of MoSys California ("MOSYS
DELAWARE" and, together with MoSys California, the "PARTIES").

                                    RECITALS

         MoSys Delaware is a newly incorporated corporation, without business  . . .

Master Separation Agreement

between

LSI Logic Corporation

and

LSI Logic Storage Systems, Inc.

December 31, 2003

TABLE OF CONTENTS

Page

ARTICLE I SEPARATION

1

1.1

Separation Date

1

1.2

Closing of Transactions

1

ARTICLE II DOCUMENTS AND ITEMS TO BE  . . .

                           ASSET ACQUISITION AGREEMENT

      THIS ASSET ACQUISITION AGREEMENT ("Agreement") is made by and between,
TEGAL CORPORATION, a Delaware corporation, with principal offices at 2201 South
McDowell Boulevard, Petaluma, California 94954-6903 ("Purchaser"), and FIRST
DERIVATIVE SYSTEMS, INC., a California corporation, with principal offices at
700-C Becknell Rd., Goleta, CA 93117 (the "Seller") effective the 28th day of
April 2004 (the "Effective Date"), for the purpose of transferring to Purchaser
all of Seller's right,  . . .