JTS CORP
SC 13D, 1997-10-09
COMPUTER STORAGE DEVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (Amendment No. )(1)


                                 JTS CORPORATION
                                (Name of Issuer)

                     Common Stock, par value $.001 per share
                         (Title of Class of Securities)

                                   4659401 04
                                 (CUSIP Number)

                             Emanuel J. Adler, Esq.
                              Tenzer Greenblatt LLP
                              405 Lexington Avenue
                            New York, New York 10174
                                 (212) 885-5565
            (Name, Address and Telephone Number of Person Authorized
                      to Receive Notice and Communications)

                               September 25, 1997
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box |_|.

          Note: Six copies of this statement, including all exhibits, should be
     filed with the Commission. See Rule 13d-1(a) for other parties to whom
     copies are to be sent.

                         (Continued on following pages)

- ----------
     (1) The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

     The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

                               Page 1 of 10 Pages



<PAGE>


                                  SCHEDULE 13D

- --------------------                                          ------------------
CUSIP No. 4659401 04                                          Page 2 of __ Pages
- --------------------                                          ------------------


- --------------------------------------------------------------------------------
   1   NAME OF REPORTING PERSON
       S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


       AMBER ARBITRAGE LDC

- --------------------------------------------------------------------------------
   2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                             (a)  [ ]
                                                             (b)  [X]


- --------------------------------------------------------------------------------
   3   SEC USE ONLY




- --------------------------------------------------------------------------------
   4   SOURCE OF FUNDS*

       WC

- --------------------------------------------------------------------------------
   5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO 
       ITEMS 2(d) OR 2(e)                                         [  ]


- --------------------------------------------------------------------------------
   6   CITIZENSHIP OR PLACE OF ORGANIZATION

       CAYMAN ISLANDS

- --------------------------------------------------------------------------------
   NUMBER OF      7    SOLE VOTING POWER
     SHARES            78,229,377
  BENEFICIALLY    --------------------------------------------------------------
    OWNED BY      8    SHARED VOTING POWER
      EACH             30,000,016
   REPORTING      --------------------------------------------------------------
     PERSON       9    SOLE DISPOSITIVE POWER
      WITH             78,229,377
                  --------------------------------------------------------------
                  10   SHARED DISPOSITIVE POWER
                          -0-

- --------------------------------------------------------------------------------
  11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       108,229,393

- --------------------------------------------------------------------------------
  12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                      [  ]

- --------------------------------------------------------------------------------
  13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

       48.8%

- --------------------------------------------------------------------------------
  14   TYPE OF REPORTING PERSON*

       CO


- --------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

           INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEM 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.

                              Page 2 of 10 Pages


<PAGE>


Item 1.   Security and Issuer

          This Schedule 13D (the "Schedule 13D") is being filed by Amber
          Arbitrage LDC (the "Reporting Person") with respect to the Common
          Stock, par value $.001 per share (the "Common Stock"), of JTS
          Corporation, a Delaware corporation (the "Company").

               On September 25, 1997, the Reporting Person and certain members
          of management of the Company (the "Management Investors"; the
          Reporting Person and the Management Investors shall sometimes be
          collectively referred to herein as the "Purchasers") entered into a
          securities purchase agreement (the "Securities Purchase Agreement")
          relating to a proposed financing (the "Transaction") of the Company,
          consisting of an aggregate of 28,802 shares of Series D Convertible
          Preferred Stock (the "Series D Shares") of the Company at a purchase
          price of $875 per share, or an aggregate purchase price of
          $25,201,750. Each Series D Share is convertible by the holder thereof
          into 5,000 shares of Common Stock by the payment of additional
          consideration equal to $.65625 per share of Common Stock issuable upon
          such conversion, subject to adjustment for stock splits and similar
          events. In the event that after July 9, 1998, there are insufficient
          shares of Common Stock available for issuance upon conversion of the
          Series D Shares, the holders of Series D Shares may convert the Series
          D Shares without payment of the additional consideration. In addition,
          the Series D Shares are subject to certain redemption and cashless
          exercise provisions.

               On September 26, 1997,the closing of the Transaction occurred,
          pursuant to which the purchase price for the Series D Shares as well
          as certificates representing the Series D Shares were deposited in
          escrow (the "Escrow") with Cooley Goodward, LLP, as escrow agent (the
          "Escrow Agent"), pursuant to an Escrow Agreement (the "Escrow
          Agreement") among the Reporting Person, the Management Investors, such
          other investors, the Company and the Escrow Agent. Pursuant to the
          Escrow Agreement, the funds in the Escrow are the property of the
          Reporting Person and the other Purchasers and the Series D Shares in
          the Escrow are the property of the Company, in each case until
          delivered pursuant to the Escrow Agreement by the Escrow Agent upon
          the instruction of a representative designated by a majority in
          interest of the Purchasers, who shall have sole discretion to cause
          the delivery of such funds and shares at any time until May 31, 1998.
          Notwithstanding the foregoing, prior to the expiration or early
          termination of the statutory waiting period under the Hart Scott
          Rodino Antitrust Improvements Act of 1976 with respect to the purchase
          and sale contemplated in the Securities Purchase

                               Page 3 of 10 Pages


<PAGE>


          Agreement, the Escrow Agent shall not be permitted to deliver to the
          Company any of the funds or deliver to the Purchasers any of the
          shares unless there remains in the Escrow an aggregate of $6,714,750
          and 7,674 Series D Shares. Immediately after the entering into of the
          Escrow Agreement $9,000,250 aggregate amount of purchase price was
          delivered to the Company from the Escrow, of which $7,142,625 was
          attributable to the Reporting Person, and 10,286 Series D Shares were
          delivered from the Escrow, of which 8,163 Series D Shares were
          delivered to the Reporting Person.

                    The Reporting Person disclaims the existence of a group with
          the Management Investors.

                    The principal executive offices of the Company are located
          at 166 Baypointe Parkway, San Jose, California 95134. 

Item 2.   Identity and Background

          I. (a) The Reporting Person is Amber Arbitrage LDC.

          (b)-(c)

          The Reporting Person is a private investment fund. The principal
          business address of the Reporting Person is c/o Custom House Fund
          Management Limited, 31 Kildare Street, Dublin 2, Ireland.

          (d) During the last five years, the Reporting Person has not been
          convicted in a criminal proceeding (excluding traffic violations or
          similar misdemeanors).

          (e) During the last five years, the Reporting Person has not been a
          party to a civil proceeding of a judicial or administrative body of
          competent jurisdiction and as a result of such proceeding was or is
          subject to any judgment, decree or final order enjoining future
          violations of, or prohibiting or mandating activities subject to,
          federal or state securities laws or finding any violation with respect
          to such laws.

          (f) The Reporting Person is a Cayman Islands corporation.

          II. (b) - (c)

          The sole director of the Reporting Person is Lismore Management, Ltd.,
          a British Virgin Islands company, which has a principal business
          address at c/o ING Trust (BVI) Limited, P.O. Box 3459, Road Town,
          Tortola, British Virgin Islands and whose directors are Peter Anderson
          and John Benbow.

          Messrs. Anderson and Benbow are principally employed as partners in
          the accounting firm of Benbow Anderson & Co., which has a principal
          business address at P.O. Box 923, Grand Cayman, Cayman Islands.

          (d) To the knowledge of the Reporting Person, none of the individuals
          or entity described in this Item 2.II. has been convicted in a
          criminal proceeding (excluding traffic violations or similar
          misdemeanors).

          (e) To the knowledge of the Reporting Person, none of the individuals
          or entity described in this Item 2.II. has been a party to a civil
          proceeding of a judicial or administrative body of competent
          jurisdiction and as a result of such proceeding was or is subject to
          any judgment, decree or final order enjoining future violations of, or
          prohibiting or mandating activities subject to, federal or state
          securities laws or finding any violation with respect to such laws.

          (f) To the knowledge of the Reporting Person, each individual
          described in this Item 2.II. is a citizen of the United Kingdom and a
          permanent resident of the Cayman Islands.

Item 3.   Source and Amount of Funds or Other Consideration

          The source of the $20,000,250 deposited by the Reporting Person in
          escrow as set forth in Item 1 was working capital of the Reporting
          Person.

Item 4.   Purpose of Transaction.

          The Reporting Person acquired the Series D Shares of the Company
          reported herein as being owned by it for

                               Page 4 of 10 Pages


<PAGE>


          investment purposes. Depending upon market conditions and other
          factors that the Reporting Person may deem material to its investment
          decision, the Reporting Person may purchase securities of the Company
          in the open market or in private transactions, or may dispose of all
          or a portion of the Series D Shares or other securities of the Company
          that it now owns or hereafter may acquire, subject to restrictions on
          transfer under the securities laws and under the documents pursuant to
          which such securities were purchased.

          Pursuant to the terms of conversion set forth in Item 1, the Series D
          Shares subject to the Securities Purchase Agreement are convertible
          into an aggregate of 144,010,000 shares of Common Stock, of which the
          Series D Shares purchased and to be purchased by the Reporting Person
          are convertible into 114,290,000 shares of Common Stock. The Company
          has informed the Reporting Person that as of September 26, 1997, there
          were only 63,295,773 shares of Common Stock available for issuance
          upon conversion of Series D Shares. Pursuant to the Securities
          Purchase Agreement, the Company agreed to hold its 1998 annual meeting
          of stockholders no later than July 9, 1998 and to hold a special
          meeting of stockholders by November 30, 1997 (unless the proxy
          statement relating to such meeting is reviewed by the Securities and
          Exchange Commission, in which case the length of time of such review
          shall be added to the above date) and to propose at such special
          meeting and every special or annual meeting thereafter until adopted,
          an amendment (the "Amendment") to the Certificate of Incorporation of
          the Company, raising the number of authorized shares of Common Stock
          to at least the number of shares of Common Stock issuable upon
          conversion of the Series D Shares. In addition, the Amendment will
          permit holders of not less than 25% of the outstanding voting power of
          the Company to call a special meeting of stockholders. The Company
          agreed that it would not submit any other proposals for stockholder
          approval until the Amendment is approved, unless upon the advice of
          counsel the Company determines that it is obligated to do so under the
          Company's charter documents, by law or judicial order, or in order to
          discharge its fiduciary obligations. The Company agreed that it would
          not issue any additional equity securities or securities exercisable
          to purchase or convertible into or exchangeable for equity securities
          until the Amendment is approved, other than the securities reserved
          for issuance pursuant to the Securities Purchase Agreement. The
          Company further agreed that any additional equity securities issued
          after approval of the Amendment which have a liquidation preference
          senior to the Series D

                               Page 5 of 10 Pages


<PAGE>



          Preferred Shares shall be subject to a right of first refusal in favor
          of the Buyers.

          The Reporting Person and holders (the "Key Stockholders") of an
          aggregate of 30,000,016 shares of Common Stock of the Company entered
          into a Stockholders Agreement, dated September 25, 1997, pursuant to
          which the Key Stockholders agreed to vote their shares of Common Stock
          in favor of the Amendment at any and all meetings of stockholders of
          the Company until such Amendment is adopted or September 25, 2018, if
          earlier. In addition, the Key Stockholders gave their proxy to a
          designee of the Reporting Person in order to vote in favor of the
          Amendment. The Reporting Person disclaims the existence of a group
          with the Key Stockholders.

          The Reporting Person and the other Purchasers entered into a Sales
          Lock-up Agreement dated September 25, 1997, pursuant to which they
          agreed that without the prior written consent of the Company, for a
          period of one year from the date of such Agreement, the Purchasers
          would not offer, sell, or otherwise dispose of more than 50% of the
          Series D Shares or Common Stock issuable upon conversion of such 50%
          of the Series D Shares, subject to certain exceptions.

          In conjunction with the Securities Purchase Agreement, the Company,
          the Reporting Person and the other Purchasers entered into a
          Registration Rights Agreement pursuant to which the Company agreed to
          file a registration statement on Form S-3 on or before October 15,
          1997 with respect to the shares of Common Stock issuable upon
          conversion of the Series D Shares and use its best efforts to cause
          such registration statement to be declared effective on or before
          January 15, 1998. In addition, pursuant to the Registration Rights
          Agreement, the Company granted to the Reporting Person and such other
          Purchasers certain piggyback and demand registration rights.

          Pursuant to the Stockholders Agreement, the Management Investors
          agreed not to convert their Series D Shares into shares of Common
          Stock, until the Amendment is approved. Copies of the Securities
          Purchase Agreement, the Stockholders Agreement and the Sale Lock-Up
          Agreement are attached as Exhibits 7.1, 7.2 and 7.3, respectively, to
          this statement and are incorporated herein by reference. The
          descriptions of those agreements herein are not complete and are
          qualified by their entirety by reference to the aforesaid Exhibits.

          Pursuant to the Certificate of Designations relating to the Series D
          Shares, the Board of Directors of the Company (the "Board") will
          consist of seven members, six of whom will be elected by the holders
          of a majority of the shares of Common Stock and one of whom will be
          elected by the holders of a majority of the Series D Shares.


                               Page 6 of 10 Pages


<PAGE>


          Except as otherwise set forth above, the Reporting Person has no plans
          or proposals which relate to, or would result in, any of the matters
          referred to in Paragraphs (b) through (j) of Item 4 of Schedule 13D.

Item 5.   Interest in Securities of the Issuer.

          (a) - (b)

          According to information provided to the Reporting Person by the
          Company, there were, as of September 26, 1997, 158,283,990 shares of
          Common Stock of the Company issued and outstanding.

          The Reporting Person has sole voting and dispositive power over
          78,229,377 shares of Common Stock, comprised of (i) 14,928,700 shares
          of Common Stock owned of record by Pax Clearing Company Limited
          Partnership, the Reporting Person's clearing firm, (ii) 40,815,000
          shares of Common Stock issuable upon the conversion of 8,163 Series D
          Shares released from the Escrow on September 26, 1997, (iii) 4,904
          shares of Common Stock issuable upon conversion of $80,000 principal
          amount of the 5.25% convertible subordinated debentures of the Company
          due April 29, 2002 owned by the Reporting Person and (iv) 22,480,773
          shares of Common Stock issuable upon the conversion of that portion of
          the 14,695 Series D Shares remaining in the Escrow that are
          attributable to the Reporting Person and that can be converted prior
          to the adoption of the Amendment. An additional 50,994,227 shares of
          Common Stock will be issuable upon the conversion of Series D Shares
          after the adoption of the Amendment. The Reporting Person disclaims
          beneficial ownership of such additional shares of Common Stock for
          purposes of this Schedule 13D inasmuch as they cannot be acquired by
          the Reporting Person within 60 days of the date hereof.

          The Reporting Person has the sole power to vote and dispose of all
          such securities.

          In addition, the Key Stockholders have given a designee of the
          Reporting Person a proxy with respect to 30,000,016 shares of Common
          Stock for the purpose of voting in favor of the Amendment. The
          Reporting Person may be deemed to be the beneficial owner of such
          shares by virtue of shared voting power over such shares.

          Pursuant to Rule 13d-3 promulgated under the Securities Exchange Act
          of 1934, as amended, the shares of Common Stock described in this Item
          5(a) - (b) constitute 48.8% of the outstanding shares of Common
          Stock.

          To the knowledge of the Reporting Person, none of the individuals or
          entity described in Item 2.II. of this Schedule 13D owns any
          securities of the Company.

          (c) On September 26, 1997, pursuant to the Securities Purchase
          Agreement, the Reporting Person purchased 8,163 Series D Shares and
          14,695 Series D Shares remained in Escrow.

          Since July 28, 1997, the Reporting Person has disposed of 1,992,300
          shares of Common Stock in transactions on the American Stock Exchange
          as follows:

            Date                   Shares            Sale Price Per Share
            ----                   ------            --------------------
          8/19/97                    1,000                 $0.7500
          8/20/97                  113,300                  0.7500
          8/21/97                    4,500                  0.7500
          8/22/97                    4,000                  0.7500
          8/27/97                   36,000                  0.7500
          8/27/97                   50,000                  0.8125
          8/27/97                   69,500                  0.8750
          8/28/97                    7,000                  0.8750
          8/29/97                   17,000                  0.8750
          9/04/97                   18,500                  0.7500
          9/05/97                  100,000                  0.7500
          9/09/97                   25,000                  0.7500
          9/11/97                   16,500                  0.6875
          9/16/97                1,477,000                  0.6250
          9/16/97                   24,000                  0.6875
          9/17/97                    8,000                  0.6875
          9/25/97                   21,000                  0.6250

          Since July 28, 1997 the Reporting Person has acquired 12,956,600
          shares of Common Stock in transactions on the American Stock Exchange
          as follows:

            Date                   Shares           Purchase Price Per Share
            ----                   ------           ------------------------
          8/01/97                1,600,000                 $0.6250
          8/04/97                1,750,000                  0.6250
          8/05/97                1,000,000                  0.6250
          8/07/97                   13,000                  0.8125
          8/11/97                    7,600                  0.6875
          8/11/97                    5,000                  0.7500
          8/13/97                    6,000                  0.6875
          8/14/97                   13,000                  0.6875
          8/14/97                    8,000                  0.7500
          8/15/97                1,650,000                  0.6875
          8/18/97                    2,000                  0.6875
          8/20/97                3,406,000                  0.6875
          8/21/97                3,306,200                  0.6875
          8/21/97                   25,000                  0.6250
          8/22/97                   25,000                  0.6250
          8/25/97                    4,300                  0.6250
          8/26/97                    3,000                  0.6250
          8/27/97                    1,000                  0.6875
          9/04/97                   51,000                  0.6875
          9/05/97                    6,000                  0.6875
          9/08/97                   20,500                  0.6875
          9/09/97                    8,000                  0.6875
          9/11/97                   46,000                  0.6250

          Since July 28, 1997 the Reporting Person has acquired an aggregate of
          $80,000 principal amount of the 5.25% convertible subordinated
          debentures of the Company due April 29, 2002 in transactions on the
          American Stock Exchange as follows:

            Date          Amount of Debenture          Purchase Price 
            ----          -------------------          -------------- 
          9/11/97             $50,000                      $16,750
          9/16/97             $10,000                        3,013
          9/16/97             $20,000                        3,063

          The debentures, at the option of the Reporting Person, are convertible
          into Common Stock at a conversion rate of $16.3125 per share.



                               Page 7 of 10 Pages


<PAGE>


          Other than as set forth above, the Reporting Person has not effected
          any transactions in the securities of the Company during the past 60
          days.

          (d) The Reporting Person affirms that no person other than the
          Reporting Person has the right to receive, or the power to direct the
          receipt of, dividends from, or the proceeds from the sale of, the
          securities owned by the Reporting Person.

          (e) It is inapplicable for the purposes herein to state the date on
          which the Reporting Person ceased to be the owner of more than five
          percent of the Common Stock of the Company.

Item 6.   Contracts, Arrangements, Understandings or Relationships with
          respect to Securities of the Issuer.

          Reference is made to Item 4 above regarding certain arrangements
          relating to transfer or voting of securities.

          Except as set forth elsewhere in this Schedule 13D, the Reporting
          Person does not have any contract, arrangement, understanding or
          relationship (legal or otherwise) with any person with respect to any
          securities of the Company, including, but not limited to, transfer or
          voting of any such securities, finder's fees, joint ventures, loan or
          option arrangements, puts or calls, guarantees of profits, division of
          profits or loss, or the giving or withholding of proxies.

Item 7.   Material to be Filed as Exhibits.

          1.   Securities Purchase Agreement dated as of September 25, 1997
               among the Company, the Reporting Person and certain other
               investors named therein.

          2.   Stockholders Agreement dated September 25, 1997 among the
               Company, the Reporting Person and certain holders of Common Stock
               named therein.

          3.   Sale Lock-Up Agreement dated September 25, 1997 among the
               Company, the Reporting Person and certain other investors named
               therein.



                               Page 8 of 10 Pages


<PAGE>

                                    SIGNATURE


     After reasonable inquiry, and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.

Date: October 6, 1997


                                            AMBER ARBITRAGE LDC
                                            By:  Lismore Mangement Ltd.


                                            By: /s/ Peter Anderson
                                                --------------------------------
                                                Peter Anderson, Director




                               Page 9 of 10 Pages


<PAGE>


                                  Exhibit Index


Sequential
Exhibit No.                    Description                              Page No.
- -----------                    -----------                              --------

1.            Securities  Purchase  Agreement dated as of September
              25, 1997 among the Company,  the Reporting Person and
              certain other investors named therein.

2.            Stockholders Agreement dated September 25, 1997 among
              the Company, the Reporting Person and certain holders
              of Common Stock named therein.

3.            Sale Lock-Up Agreement dated September 25, 1997 among
              the Company,  the Reporting  Person and certain other
              investors named therein.


                               Page 10 of 10 Pages


                          SECURITIES PURCHASE AGREEMENT


     SECURITIES PURCHASE AGREEMENT (the "Agreement"),  dated as of September 25,
1997, by and among JTS CORPORATION,  a Delaware  corporation,  with headquarters
located at 166 Baypointe  Parkway,  San Jose,  California 95134 (the "Company"),
and  the  investors  listed  on  the  Schedule  of  Investors   attached  hereto
(individually, a "Buyer" and collectively, the "Buyers").

                                    WHEREAS:

     A. The Company and the Buyers are executing and  delivering  this Agreement
in reliance upon the exemption from securities registration afforded by Rule 506
of Regulation D ("Regulation D") as promulgated by the United States  Securities
and Exchange Commission (the "SEC") under the Securities Act of 1933, as amended
(the "1933 Act");

     B. The Company has  authorized  the  following  new series of its Preferred
Stock, $.001 par value per share (the "Preferred Stock"): the Company's Series D
Convertible  Preferred Stock (the "Series D Preferred  Shares"),  which shall be
convertible into shares of the Company's Common Stock, $.001 par value per share
(the "Common Stock") (as converted, the "Conversion Shares"), in accordance with
the terms of the Company's  Certificate of Designations,  Preferences and Rights
of the Series D Preferred  Shares,  substantially in the form attached hereto as
Exhibit A (the "Certificate of Designations");

     C. The Buyers wish to  purchase,  upon the terms and  conditions  stated in
this Agreement, an aggregate of up to 28,802 shares of Series D Preferred Shares
in the  respective  amounts set forth opposite each Buyer's name on the Schedule
of Investors; and

     D. Contemporaneously with the execution and delivery of this Agreement, the
parties  hereto are executing and  delivering a  Registration  Rights  Agreement
substantially in the form attached hereto as Exhibit B (the "Registration Rights
Agreement")  pursuant  to which  the  Company  has  agreed  to  provide  certain
registration rights under the 1933 Act and the rules and regulations promulgated
thereunder,  and  applicable  state  securities  laws, a Lock-Up  Agreement (the
"Lock-Up  Agreement")  substantially  in the form  attached  hereto as Exhibit C
pursuant to which the Buyers have agreed to restrict sale of fifty percent (50%)
of the  Series D  Preferred  Shares  and the  Conversion  Shares  and an  Escrow
Agreement (the "Escrow Agreement")  substantially in the form attached hereto as
Exhibit D pursuant to which the Buyers and the Company  have agreed to establish
an escrow  account  in  connection  with the  purchase  and sale of the Series D
Preferred Shares contemplated hereby.

     E. Contemporaneously with the execution and delivery of this Agreement, the
Buyers and certain  shareholders  of the Company  are  executing a  stockholders
agreement in the form of Exhibit E (the "Stockholders Agreement").

     NOW THEREFORE, the Company and the Buyers hereby agree as follows:



                                       1.
<PAGE>


     1.   PURCHASE AND SALE OF SERIES D PREFERRED SHARES.

          a. Purchase of Series D Preferred Shares.  Subject to the satisfaction
     (or  waiver) of the  conditions  set forth in  Sections 5 and 6 below,  the
     Company shall deposit in the escrow  account the number of shares of Series
     D Preferred Shares and the Buyers shall deposit the dollar amount stated in
     the Escrow  Agreement (the  "Closing").  Subject to the terms of the Escrow
     Agreement,  the  Escrow  Agent  (as  that  term is  defined  in the  Escrow
     Agreement) shall release to the Buyers any or all of the Series D Preferred
     Shares and to the Company the  corresponding  dollar amount from each Buyer
     from time to time. The per share  purchase price (the "Purchase  Price") of
     the Series D Preferred Shares shall be $875.00.

          b. Closing Date. The date and time of the Closing (the "Closing Date")
     shall be at 6:00 p.m. Pacific Standard Time on Thursday, September 25, 1997
     or at such  other  time  and  place as the  Company  and the  Buyers  shall
     mutually agree.  The Closing shall occur on the Closing Date at the offices
     of Cooley Godward LLP, Five Palo Alto Square, Palo Alto, California 94306.

          c. Form of Payment.  On the Closing Date, (i) each Buyer shall deposit
     the Purchase Price with the Escrow Agent for the Series D Preferred  Shares
     to be  issued  and sold to such  Buyer,  by wire  transfer  of  immediately
     available  funds  in  accordance  with  the  Escrow  Agent's  written  wire
     instructions, and (ii) as soon thereafter as practicable, the Company shall
     deposit with the Escrow Agent, a stock certificate representing such number
     of the  Series D  Preferred  Shares  which  such  Buyer is  purchasing  (as
     indicated  opposite such Buyer's name on the Schedule of  Investors),  duly
     executed on behalf of the Company and  registered in the name of such Buyer
     or its designee (the "Stock Certificates").

     2.   BUYER'S REPRESENTATIONS AND WARRANTIES.

          Each Buyer represents and warrants with respect to only itself that:

          a.  Investment  Purpose.  Such  Buyer (i) is  acquiring  the  Series D
     Preferred Shares and (ii) upon conversion of the Series D Preferred Shares,
     will acquire the Conversion  Shares then issuable,  for its own account for
     investment  only,  not as a nominee  or  agent,  and not with a view to the
     resale or  distribution  of any part thereof.  By executing this Agreement,
     each Buyer further  represents  that such Buyer does not have any contract,
     undertaking,  agreement or arrangement with any person to sell, transfer or
     grant participations to such person or to any third person, with respect to
     any of the Series D Preferred Shares or the Conversion Shares.

          b. Accredited Investor Status. Such Buyer is an "accredited  investor"
     as that term is defined in Rule 501(a)(3) of Regulation D.

          c. Certain  Provisions  Under 16 C.F.R.  Rule 802.64.  Consistent with
     Rule  802.64(b),  Amber  Arbitrage  LDC ("Amber") is acquiring the Series D
     Preferred Shares "solely


                                       2.
<PAGE>


     for  the  purposes  of   investment"  as  that  term  is  defined  in  Rule
     801.1(i)(1).  Amber is an  "Institutional  Investor"  for the  purposes  of
     16.C.F.R. Rule 802.64(a).

          d. Reliance on Exemptions.  Such Buyer  understands  that the Series D
     Preferred Shares and the Conversion Shares are being offered and sold to it
     in reliance on specific  exemptions from the  registration  requirements of
     United  States  federal and state  securities  laws and that the Company is
     relying in part upon the truth and accuracy of, and such Buyer's compliance
     with, the  representations,  warranties,  agreements,  acknowledgments  and
     understandings  of such Buyer set forth  herein in order to  determine  the
     availability  of such  exemptions  and the  eligibility  of such  Buyer  to
     acquire the Series D Preferred Shares and the Conversion Shares.

          e.  Information.  Such  Buyer  and its  advisors,  if any,  have  been
     furnished  with  all  materials  relating  to the  business,  finances  and
     operations of the Company and  materials  relating to the offer and sale of
     the Series D Preferred  Shares and the  Conversion  Shares  which have been
     requested by such Buyer.  Such Buyer and its  advisors,  if any,  have been
     afforded the  opportunity  to ask  questions  of the Company.  Neither such
     inquiries  nor any other due  diligence  investigations  conducted  by such
     Buyer or its advisors,  if any, or its representatives  shall modify, amend
     or affect such Buyer's right to rely on the Company's  representations  and
     warranties  contained in Section 3 below.  Such Buyer  understands that its
     investment  in the  Series D  Preferred  Shares and the  Conversion  Shares
     involves a high  degree of risk.  Such Buyer has  sought  such  accounting,
     legal and tax advice as it has  considered  necessary  to make an  informed
     investment  decision  with  respect  to its  acquisition  of the  Series  D
     Preferred Shares and the Conversion Shares.

          f. No  Governmental  Review.  Such  Buyer  understands  that no United
     States  federal or state  agency or any other  government  or  governmental
     agency  has  passed on or made any  recommendation  or  endorsement  of the
     Series D  Preferred  Shares or the  Conversion  Shares or the  fairness  or
     suitability  of the  investment  in the  Series D  Preferred  Shares or the
     Conversion  Shares nor have such  authorities  passed upon or endorsed  the
     merits of the offering of the Series D Preferred  Shares or the  Conversion
     Shares.

          g. Transfer or Resale.  Such Buyer understands that except as provided
     in the Registration Rights Agreement: (i) the Series D Preferred Shares and
     the Conversion  Shares have not been and are not being registered under the
     1933 Act or any state  securities  laws,  and may not be sold,  assigned or
     transferred unless (A) subsequently  registered thereunder,  (B) such Buyer
     shall have  delivered to the Company an opinion of counsel,  in a generally
     acceptable form, to the effect that such securities to be sold, assigned or
     transferred may be sold,  assigned or transferred  pursuant to an exemption
     from  such  registration,  or (C) such  Buyer  provides  the  Company  with
     reasonable  assurance  that  such  securities  can  be  sold,  assigned  or
     transferred  pursuant  to Rule  144  promulgated  under  the 1933 Act (or a
     successor rule thereto);  (ii) any sale of such securities made in reliance
     on Rule 144  promulgated  under the 1933 Act (or a successor  rule thereto)
     ("Rule 144") may be made only in accordance  with the terms of Rule 144 and
     further, if Rule 144 is not applicable, any resale of such securities under
     circumstances  in which the seller (or the person  through whom the sale is
     made) may be deemed to be an underwriter


                                       3.
<PAGE>


     (as that term is defined in the 1933 Act) may require  compliance with some
     other  exemption under the 1933 Act or the rules and regulations of the SEC
     thereunder; and (iii) neither the Company nor any other person is under any
     obligation  to  register  such  securities  under the 1933 Act or any state
     securities laws or to comply with the terms and conditions of any exemption
     thereunder.

          h. Legends.  Such Buyer  understands  that the  certificates  or other
     instruments representing the Series D Preferred Shares and, until such time
     as the sale of the Conversion  Shares have been  registered  under the 1933
     Act as  contemplated  by  the  Registration  Rights  Agreement,  the  stock
     certificates  representing the Conversion Shares,  shall bear a restrictive
     legend in substantially  the following form (and a stop-transfer  order may
     be placed against transfer of such stock certificates):

               THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT
               BEEN  REGISTERED  UNDER THE  SECURITIES ACT OF 1933, AS
               AMENDED,  OR  APPLICABLE  STATE  SECURITIES  LAWS.  THE
               SECURITIES  HAVE BEEN ACQUIRED FOR  INVESTMENT  AND MAY
               NOT BE SOLD,  TRANSFERRED OR ASSIGNED IN THE ABSENCE OF
               AN EFFECTIVE  REGISTRATION STATEMENT FOR THE SECURITIES
               UNDER  THE  SECURITIES  ACT OF  1933,  AS  AMENDED,  OR
               APPLICABLE  STATE  SECURITIES  LAWS,  OR AN  OPINION OF
               COUNSEL,  ACCEPTABLE TO THE COMPANY,  THAT REGISTRATION
               IS NOT  REQUIRED  UNDER  SAID ACT OR  APPLICABLE  STATE
               SECURITIES  LAWS OR UNLESS  SOLD  PURSUANT  TO RULE 144
               UNDER SAID ACT.

     Such  Buyer  also  understands  that  pursuant  to the  Lock-Up  Agreement,
     certificates or other instruments  representing  fifty percent (50%) of the
     Series D  Preferred  Shares  and the stock  certificates  representing  the
     Conversion  Shares issuable upon conversion of such fifty per cent (50%) of
     the  Series  D  Preferred  Shares  shall  bear  a  restrictive   legend  in
     substantially  the following form (and a stop-transfer  order may be placed
     against transfer of such stock certificates):

               UNTIL  SEPTEMBER  25,  1998,  THE  SALE,   TRANSFER  OR
               ASSIGNMENT  OF  THE  SECURITIES   REPRESENTED  BY  THIS
               CERTIFICATE  IS  SUBJECT  TO THE TERMS OF AN  AGREEMENT
               BETWEEN THE COMPANY  AND THE  REGISTERED  HOLDER OR HIS
               PREDECESSOR  IN INTEREST.  COPIES OF SUCH AGREEMENT MAY
               BE  OBTAINED BY WRITTEN  REQUEST  MADE BY THE HOLDER OF
               RECORD  OF THIS  CERTIFICATE  TO THE  SECRETARY  OF THE
               COMPANY.

          i.  Authorization;  Enforcement.  This  Agreement  has  been  duly and
     validly authorized, executed and delivered on behalf of such Buyer and is a
     valid and binding  agreement of such Buyer  enforceable in accordance  with
     its terms, subject as to enforceability to general principles of equity and
     to applicable bankruptcy, insolvency, reorganization, moratorium,


                                       4.
<PAGE>


     liquidation and other similar laws relating to, or affecting generally, the
     enforcement of applicable creditors' rights and remedies.

          j Residency. Such Buyer is a resident of that country specified in its
     address on the Schedule of Investors.

     3.   REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

          The Company represents and warrants to each of the Buyers that:

          a.  Organization  and  Qualification.  The Company and its significant
     subsidiaries  (as defined in Rule 1-02 (w) of Regulation S-X promulgated by
     the SEC under the 1933 Act and which are set forth in  Schedule  3(a)) (the
     "Significant  Subsidiaries")  are  corporations  duly organized and validly
     existing in good standing under the laws of the jurisdictions in which they
     are  incorporated,  and have the  requisite  corporate  power to own  their
     properties and to carry on their business as now being  conducted.  Each of
     the Company and its subsidiaries is duly qualified as a foreign corporation
     to do business and is in good standing in every  jurisdiction  in which the
     nature of the business conducted by it makes such qualification  necessary,
     except to the  extent  that the  failure to be so  qualified  or be in good
     standing  would not have a material  adverse  effect on the Company and its
     subsidiaries  taken  as a  whole.  As used  in this  Section  3,  the  term
     "Company" shall include all of its Significant Subsidiaries.

          b. Authorization;  Enforcement; Compliance with Other Instruments. (i)
     The Company has the requisite  corporate  power and authority to enter into
     and  perform  this  Agreement,   the  Registration  Rights  Agreement,  the
     Certificate  of  Designations  of  the  Series  D  Preferred   Shares  (the
     "Certificate of  Designations")  and the Escrow Agreement (the "Transaction
     Documents"),  and  to  issue  the  Series  D  Preferred  Shares  and,  upon
     authorization in the Certificate of Incorporation, the Conversion Shares in
     accordance  with the terms  hereof  and  thereof,  (ii) the  execution  and
     delivery of the Transaction  Documents by the Company and the  consummation
     by it of  the  transactions  contemplated  hereby  and  thereby,  including
     without  limitation  the issuance of the Series D Preferred  Shares and the
     reservation for issuance and the issuance of the Conversion Shares issuable
     upon conversion  thereof,  have been duly authorized by the Company's Board
     of Directors  and no further  consent or  authorization  is required by the
     Company,  its  Board  of  Directors  or its  stockholders  other  than  the
     amendment of the  Certificate of  Incorporation  to increase the authorized
     number of shares of Common  Stock of the  Company to cover the  issuance of
     the  Conversion  Shares,  (iii) the  Transaction  Documents  have been duly
     executed  and  delivered  by  the  Company,   (iv)  this   Agreement,   the
     Registration  Rights  Agreement,  and the Escrow  Agreement  constitute the
     valid and  binding  obligations  of the  Company  enforceable  against  the
     Company in accordance with their terms,  except as such  enforceability may
     be  limited  by  general  principles  of equity or  applicable  bankruptcy,
     insolvency,   reorganization,   moratorium,  liquidation  or  similar  laws
     relating to, or affecting  generally,  the enforcement of creditors' rights
     and  remedies,  and (v)  prior to the  Closing  Date,  the  Certificate  of
     Designations  has been  filed with the  Secretary  of State of the State of
     Delaware  and will be in full force and  effect,  enforceable  against  the
     Company  in  accordance  with  its  terms.  The  Buyers  have  brought  the
     Stockholders Agreement to the attention of the Company,



                                       5.
<PAGE>


     and the  Company  agrees not to take any actions  not  consistent  with the
     intent of the Stockholders Agreement.

          c. Capitalization. As of the date hereof, the authorized capital stock
     of the Company  consists of  250,000,000  shares of Common Stock,  of which
     158,283,990  shares are issued and  outstanding,  and 10,000,000  shares of
     Preferred  Stock,  of which 4,600 shares of Series C Convertible  Preferred
     Stock (the "Series C Preferred Shares") are issued and outstanding.  All of
     such  outstanding  shares have been  validly  issued and are fully paid and
     nonassessable.  Except as disclosed in Schedule  3(c),  no shares of Common
     Stock or  Preferred  Stock are  subject to  preemptive  rights or any other
     similar  rights or any liens or  encumbrances  suffered or permitted by the
     Company.  Except as disclosed in Schedule 3(c), as of the effective date of
     this  Agreement,  (i) there are no outstanding  options,  warrants,  scrip,
     rights to subscribe to, calls or  commitments  of any character  whatsoever
     relating  to, or  securities  or rights  convertible  into,  any  shares of
     capital stock of the Company, or contracts, commitments,  understandings or
     arrangements  by which the  Company  or any of its  subsidiaries  is or may
     become bound to issue additional  shares of capital stock of the Company or
     any of its subsidiaries or options,  warrants,  scrip,  rights to subscribe
     to,  calls or  commitments  of any  character  whatsoever  relating  to, or
     securities or rights  convertible  into, any shares of capital stock of the
     Company,  (ii) there are no outstanding debt securities and (iii) there are
     no  agreements  or  arrangements  under  which  the  Company  or any of its
     subsidiaries  is obligated to register the sale of any of their  securities
     under the 1933 Act (except the Registration Rights Agreement). There are no
     securities or instruments  containing anti- dilution or similar  provisions
     that will be triggered by the issuance of the Series D Preferred  Shares or
     the Conversion Shares as described in this Agreement.

          d.  Issuance of  Securities.  The Series D  Preferred  Shares are duly
     authorized and, upon issuance in accordance with the terms hereof, shall be
     (i)  validly  issued,  fully  paid and  non-assessable,  (ii) free from all
     taxes,  liens and  charges  with  respect  to the issue  thereof  and (iii)
     entitled  to the rights and  preferences  set forth in the  Certificate  of
     Designations. Upon authorization in the Certificate of Incorporation of not
     less than an additional  81,000,000  shares of Common Stock, the Conversion
     Shares issuable upon conversion of the Series D Preferred  Shares will have
     been duly  authorized  and reserved for  issuance  and upon  conversion  or
     exercise in accordance with the Certificate of Designations will be validly
     issued,  fully paid and  nonassessable  and free from all taxes,  liens and
     charges with respect to the issue thereof,  with the holders being entitled
     to all rights accorded to a holder of Common Stock.

          e. No Material  Adverse Change.  Since May 4, 1997,  there has been no
     material  adverse  change  and  no  material  adverse  development  in  the
     business,   properties,   operations,   financial  conditions,  results  of
     operations  or  prospects  of the  Company,  except as disclosed in the SEC
     reports  (including  the Form 10-Q for the  quarter  ended  August 3, 1997,
     which Form 10-Q has been disclosed to the Buyers).

          f. SEC Documents;  Financial Statements. Since September 25, 1996, the
     Company has filed  timely all reports,  schedules,  forms,  statements  and
     other  documents  required  to be filed by it with the SEC  pursuant to the
     reporting requirements of the Securities Exchange


                                       6.
<PAGE>


     Act of 1934, as amended (the "1934 Act") (all of the foregoing  filed prior
     to the  date  hereof  and  all  exhibits  included  therein  and  financial
     statements and schedules  thereto and documents  incorporated  by reference
     therein and the Company's Registration Statements on Form S-4 filed on June
     24,  1996,  as amended,  and on Form S-1's  filed on November  29, 1996 and
     February  14,  1997 and all  prospectuses  related  thereto,  all  exhibits
     included  therein  and  financial  statements  and  schedules  thereto  and
     documents  incorporated by reference therein, being hereinafter referred to
     as the "SEC  Documents").  The  Company has  delivered  to the Buyer or its
     representative  true and complete copies of the SEC Documents.  As of their
     respective dates, the SEC Documents  complied in all material respects with
     the requirements of the Securities Act of 1933, as amended (the "1933 Act")
     and the 1934 Act, as applicable,  and the rules and  regulations of the SEC
     promulgated thereunder applicable to the SEC Documents, and none of the SEC
     Documents,  at the time they were filed with the SEC,  contained any untrue
     statement of a material  fact or omitted to state a material  fact required
     to be stated therein or necessary in order to make the statements  therein,
     in light of the  circumstances  under which they were made, not misleading.
     As of their  respective  dates,  the  financial  statements  of the Company
     included in the SEC Documents  complied as to form in all material respects
     with  applicable  accounting  requirements  and  the  published  rules  and
     regulations of the SEC with respect thereto. Such financial statements have
     been prepared in accordance with generally accepted accounting  principles,
     consistently  applied,  during the periods  involved  (except (i) as may be
     otherwise  indicated in such financial  statements or the notes thereto, or
     (ii) in the case of unaudited  interim  statements,  to the extent they may
     exclude  footnotes or may be condensed  or summary  statements)  and fairly
     present in all material  respects the financial  position of the Company as
     of the dates thereof and the results of its  operations  and cash flows for
     the periods then ended (subject,  in the case of unaudited  statements,  to
     normal year-end audit adjustments).  No other information provided by or on
     behalf  of the  Company  to the  Buyer  which  is not  included  in the SEC
     Documents,  including,  without  limitation,  information  referred  to  in
     Section 2(d) of this Agreement, contains any untrue statement of a material
     fact or omits to state any  material  fact  necessary  in order to make the
     statements  therein,  in the light of the circumstance under which they are
     or were made, not misleading.

          g. Offering Valid.  Assuming the accuracy of the  representations  and
     warranties of the Buyers contained in Section 2 hereof, the offer, sale and
     issuance  of the Shares and the  Conversion  Shares will be exempt from the
     registration  requirements  of the  Securities Act of 1933, as amended (the
     "Act")  upon  the  filing  of a Form D under  the Act and  will  have  been
     registered or qualified (or are exempt from registration and qualification)
     under  the  registration,  permit  or  qualification  requirements  of  all
     applicable state securities laws.  Neither the Company nor any agent on its
     behalf has  solicited  or will solicit any offers to sell or has offered to
     sell or will  offer to sell all or any part of the  Shares to any person or
     persons so as to bring the sale of such  Shares by the  Company  within the
     registration provisions of the Act or any state securities laws.

          h.  Absence  of  Litigation.  There is no  action,  suit,  proceeding,
     inquiry or investigation  before or by any court, public board,  government
     agency,  self-regulatory  organization or body pending or, to the knowledge
     of the Company,  threatened against or affecting the Company, the Preferred
     Stock, the Common Stock or any of the Company's


                                       7.
<PAGE>


     subsidiaries,  wherein an unfavorable decision, ruling or finding would (i)
     have a material adverse effect on the transactions contemplated hereby (ii)
     adversely  affect the validity or  enforceability  of, or the  authority or
     ability of the Company to perform its obligations  under, this Agreement or
     any of the documents  contemplated herein or (iii), except as expressly set
     forth in Schedule  3(h),  have a material  adverse  effect on the business,
     operations,  properties, financial condition or results of operation of the
     Company and its subsidiaries taken as a whole.

          i. No  Conflicts.  The  execution,  delivery  and  performance  of the
     Transaction Documents by the Company and the consummation by the Company of
     the transactions contemplated thereby will not (i) result in a violation of
     the  Certificate  of  Incorporation  or Bylaws or (ii)  conflict  with,  or
     constitute  a default  (or an event  which with  notice or lapse of time or
     both  would  become a  default)  under,  or give to  others  any  rights of
     termination,  amendment,  acceleration  or  cancellation  of, any  material
     agreement,  indenture  or  instrument  to which the  Company  or any of its
     subsidiaries  is a party,  or  result  in a  violation  of any  law,  rule,
     regulation,  order, judgment,  decree, license or permit (including federal
     and state  securities laws and regulations and the rules and regulations of
     the  principal  market or exchange  on which the Common  Stock is traded or
     listed)  applicable to the Company or any of its  subsidiaries  or by which
     any property or asset of the Company or any of its subsidiaries is bound or
     affected.  The  Company  is not in  violation  of any term of or in default
     under  its  Certificate  of  Incorporation  or  By-laws,  or  any  material
     contract,  agreement,  mortgage,   indebtedness,   indenture,   instrument,
     judgment,  decree or order or any statute, rule or regulation applicable to
     the Company. The business of the Company is not being conducted,  and shall
     not be conducted  so long as the Buyers hold any Series D Preferred  Shares
     or Conversion Shares, in violation of any law, ordinance,  or regulation of
     any  governmental  entity.  Except  as  specifically  contemplated  by this
     Agreement,  including,  but not  limited to Section  4(e),  and as required
     under the 1933 Act and any applicable state securities laws, the Company is
     not required to obtain any consent,  authorization or order of, or make any
     filing or registration with, any court or governmental  agency or any third
     party in order for it to execute, deliver or perform any of its obligations
     under or contemplated  by the Transaction  Documents in accordance with the
     terms hereof or thereof.

          j. Ten Largest  Stockholders.  The list of stockholders of the Company
     attached hereto as Exhibit E constitute the ten (10) largest holders of the
     Company's  Common Stock as of the date hereof who are  affiliated  with the
     Company.

          k.  No  General  Solicitation.  Neither  the  Company,  nor any of its
     affiliates,  nor any person acting on its or their  behalf,  has engaged in
     any form of general solicitation or general advertising (within the meaning
     of Regulation D under the 1933 Act) in connection with the offer or sale of
     the Series D Preferred Shares or the Conversion Shares.

     4.   COVENANTS.

          a. Form D. The  Company  agrees to file a Form D with  respect  to the
     Series D  Preferred  Shares and the  Conversion  Shares as  required  under
     Regulation  D and to provide a copy  thereof to each Buyer  promptly  after
     such filing. The Company shall, on or before the


                                       8.
<PAGE>


     Closing Date, take such action as the Company shall reasonably determine is
     necessary  to qualify  the  Series D  Preferred  Shares and the  Conversion
     Shares for, or obtain  exemption for the Series D Preferred  Shares and the
     Conversion  Shares,  for sale to the Buyers at the Closing pursuant to this
     Agreement under  applicable  securities or "Blue Sky" laws of the states of
     the United States,  and shall provide  evidence of any such action so taken
     to the Buyers on or prior to the Closing Date.

          b. Reporting Status. Until the earlier of (i) the date as of which the
     Holders (as that term is defined in the Registration  Rights Agreement) may
     sell all of the  Conversion  Shares  without  restriction  pursuant to Rule
     144(k) promulgated under the 1933 Act (or successor  thereto),  or (ii) the
     date on which the  registration  rights expire pursuant to the Registration
     Rights  Agreement (the  "Registration  Period"),  the Company  shall,  on a
     timely basis,  file all reports  required to be filed with the SEC pursuant
     to the 1934 Act,  and the  Company  shall not  terminate  its  status as an
     issuer  required to file reports under the 1934 Act even if the 1934 Act or
     the rules and regulations thereunder would permit such termination.

          c. Use of Proceeds. The Company will use the proceeds from the sale of
     the Series D Preferred  Shares for the Company's  internal  working capital
     purposes and to make outstanding payments to certain vendors expected, on a
     commercially  reasonable  basis, to be approximately  $4,000,000 at Closing
     and approximately $2,750,000 per month thereafter.

          d.  Reservation  of Shares.  The Company  shall have taken all actions
     necessary  to  authorize  and  reserve  63,295,773  shares of Common  Stock
     available at the time of the Closing for issuance  upon  conversion  of the
     Series D Preferred Shares held by Amber.

          e.  Listing.  The  Company  shall  promptly  secure the listing of the
     Conversion  Shares upon each  national  securities  exchange  or  automated
     quotation system, if any, upon which shares of Common Stock are then listed
     (subject to official notice of issuance) and shall maintain, so long as any
     other  shares of Common  Stock  shall be so  listed,  such  listing  of all
     Conversion  Shares  from  time to time  issuable  under  the  terms of this
     Agreement and the Registration Rights Agreement. The Company shall maintain
     the Common Stock's authorization for quotation on AMEX, the Nasdaq National
     Market,  or The New York Stock  Exchange,  Inc. The Company shall  promptly
     provide to each Buyer copies of any notices it receives from AMEX regarding
     the  continued  eligibility  of the Common  Stock for listing on AMEX.  The
     Company has not  received  any notice that the Common Stock is not eligible
     for continued listing on AMEX.

          f. Annual Meeting;  Increase in Authorized  Common Stock.  The Company
     agrees that it will hold the 1998 Annual Meeting of Stockholders (the "1998
     Meeting") of the Company no later than July 9, 1998. At the 1998 Meeting or
     at any special  meeting  called on or before the 1998 Meeting,  pursuant to
     Section 6(h) or  otherwise,  the Company  shall propose an amendment to the
     Company's Certificate of Incorporation  increasing the Company's authorized
     number of shares of Common  Stock to cover at least the number of shares of
     Common Stock issuable upon conversion of the Series D Preferred  Shares and
     to permit holders of not less than 25% of the  outstanding  voting power of
     the Company to call a special meeting


                                       9.
<PAGE>


     of  stockholders  (the  "Amendment").  In the  event the  Amendment  is not
     approved in the 1998 Meeting,  the Company  agrees that it will continue to
     propose the  Amendment at subsequent  annual  meetings of  stockholders  or
     special  meetings of  stockholders  until the  Amendment is  approved.  The
     Company agrees that it will not submit any other  proposals for stockholder
     approval  until  the  Amendment  is  approved,  unless  upon the  advice of
     counsel,  the Company  determines  that it is  obligated to do so under the
     Company's  charter  documents,  by law or  judicial  order  or in  order to
     discharge its fiduciary obligations.

          g.  Further  Equity  Issuances;  Right of First  Refusal.  The Company
     agrees  that it  shall  not  issue  any  additional  equity  securities  or
     securities  exercisable to purchase,  or convertible  into, or exchangeable
     for,  equity  securities  until  the  Amendment  is  approved,  other  than
     securities  reserved for issuance as of the  Closing.  The Company  further
     agrees that any additional  equity  securities issued after approval of the
     Amendment  which  have a  liquidation  preference  senior  to the  Series D
     Preferred Shares (the "Additional Equity Securities") shall be subject to a
     right of first  refusal in favor of the Buyers (the  "Right").  Pursuant to
     the Right,  each Buyer  shall have the right to agree to purchase up to its
     pro  rata  share  based on its  proportionate  investment  in the  Series D
     Preferred  Shares, of the Additional Equity Securities within five (5) days
     of receipt of written  notice  from the  Company of its intent to issue the
     Additional  Equity  Securities.  If any Buyer  fails to give  notice of its
     intent to purchase its pro rata share of the Additional  Equity  Securities
     within such five (5) day  period,  the Company  shall  thereafter  sell the
     Additional  Equity  Securities  in  respect  of  which  the  Right  was not
     exercised,  at a price and upon general terms and conditions  materially no
     more  favorable to the  purchasers  thereof than specified in the Company's
     notice to the Buyers pursuant to this section.

          h. Right of Access to Books and Records. The Company agrees to provide
     each Buyer with access to the books and records of the  Company;  provided,
     however,  that such Buyer shall exercise such right upon reasonable  notice
     to the Company,  at a reasonable  time, and with  reasonable  frequency and
     shall execute a confidentiality  agreement reasonably acceptable in form to
     the Company  prior to the  exercise  of such right.  The right shall not be
     assignable and shall not apply in instances of contested takeovers in which
     the  requesting  Buyer is a participant  or has announced in a Schedule 13D
     that it is contemplating participating; provided, however, that the Company
     agrees that in no event will the Company  provide less  information  to the
     Buyers than is available to other contestants.

          i. Board of Directors.  The Company agrees that the authorized size of
     the Board of Directors of the Company shall be seven  directors.  The Board
     shall initially be comprised of Tom Mitchell,  Roger Johnson, Jack Tramiel,
     Jugi  Tandon,  Jean  Deleage,  and  Lip-Bu  Tan and a seventh  member to be
     designated by a majority in interest of the Buyers.

     5.   CONDITIONS TO THE COMPANY'S OBLIGATION TO SELL.

     The  obligation  of the Company  hereunder to deposit with the Escrow Agent
the Series D Preferred Shares at the Closing is subject to the satisfaction,  at
or before the Closing Date, of each of the following  conditions,  provided that
these  conditions  are for the  Company's  sole benefit and may be waived by the
Company at any time in its sole discretion:


                                      10.
<PAGE>


          a. Such Buyer shall have  executed each of the  Transaction  Documents
     and delivered the same to the Company.

          b. Such Buyer  shall  have  deposited  with the  Escrow  Agent (i) the
     Purchase  Price for the Series D Preferred  Shares to be  purchased by such
     Buyer by wire transfer of immediately  available funds pursuant to the wire
     instructions  provided  by the Escrow  Agent and (ii) an  executed  Lock-Up
     Agreement.

          c. The  representations and warranties of such Buyer shall be true and
     correct  in all  material  respects  as of the date when made and as of the
     Closing  Date as though made at that time (except for  representations  and
     warranties  that speak as of a specific  date),  and such Buyer  shall have
     performed,  satisfied  and  complied  in all  material  respects  with  the
     covenants,  agreements  and  conditions  required by this  Agreement  to be
     performed,  satisfied  or  complied  with by such  Buyer at or prior to the
     Closing Date.

     6.   CONDITIONS TO EACH BUYER'S OBLIGATION TO PURCHASE.

     The obligation of each Buyer hereunder to deposit with the Escrow Agent the
purchase  price for the Series D  Preferred  Shares at the Closing is subject to
the  satisfaction,  at or before  the  Closing  Date,  of each of the  following
conditions, provided that these conditions are for each Buyer's sole benefit and
may be waived by such Buyer at any time in its sole discretion:

          a. The Company shall have executed each of the Transaction  Documents,
     and delivered the same to such Buyer.

          b. The  Certificate  of  Designations,  shall have been filed with the
     Secretary of State of the State of Delaware,  and a copy thereof  certified
     by such Secretary of State shall have been delivered to such Buyer.

          c. The representations and warranties of the Company shall be true and
     correct in all  material  respects  (except to the extent  that any of such
     representations  and  warranties is already  qualified as to materiality in
     Section 3 above, in which case, such  representations  and warranties shall
     be true and correct without further qualification) as of the date when made
     and as of the  Closing  Date  as  though  made  at that  time  (except  for
     representations  and  warranties  that speak as of a specific date) and the
     Company  shall have  performed,  satisfied  and  complied  in all  material
     respects with the covenants,  agreements  and  conditions  required by this
     Agreement to be performed,  satisfied or complied with by the Company at or
     prior to the Closing Date.  Such Buyer shall have  received a  certificate,
     executed by the Chief  Executive  Officer of the  Company,  dated as of the
     Closing Date,  to the foregoing  effect and as to such other matters as may
     be reasonably  requested by such Buyer including,  without  limitation,  an
     update as of the Closing Date  regarding  the  representation  contained in
     Section 3(c) above.


                                      11.
<PAGE>


          d. Such Buyer shall have received the opinion of the Company's counsel
     dated as of the  Closing  Date,  in form,  scope and  substance  reasonably
     satisfactory  to such  Buyer  and in  substantially  the form of  Exhibit F
     attached hereto.

          e. The Company  shall have  executed and delivered to the Escrow Agent
     the Stock  Certificates (in such denominations as such Buyer shall request)
     for the Series D Preferred Shares being purchased by such Buyer.

          f. The Board of  Directors  of the  Company  shall  have  adopted  the
     resolutions in substantially the form of Exhibit G attached hereto.

          g. The Company shall have taken all actions necessary to authorize and
     reserve the  63,295,773  shares of Common  Stock  available  as of the date
     hereof for the issuance upon  conversion  of the Series D Preferred  Shares
     held by Amber Arbitrage.

          h. As of the Closing  Date,  such Buyer shall have  received a copy of
     letter agreements (the "Stockholders  Agreement")  executed by the ten (10)
     largest  stockholders  of the  Company  as of the  Closing  Date  that  are
     affiliated  with the  Company's  officers or directors  (collectively,  the
     "Approving  Stockholders")  to  the  effect  that  each  of  the  Approving
     Stockholders, as common stockholders of the Company, covenants to vote such
     Approving  Stockholder's  shares of Common  Stock in favor of amending  the
     Company's Certificate of Incorporation to increase the number of authorized
     shares of  Common  Stock to cover  the  number  of  shares of Common  Stock
     issuable upon conversion of the Series D Preferred  Shares at the Company's
     next special or annual meeting of  stockholders,  which meeting the Company
     agrees to hold by November 30, 1997 (unless the proxy statement relating to
     such  meeting is  reviewed  by the SEC, in which case the length of time of
     such  review  shall be  added to the  above  date),  and at any  subsequent
     meeting until the Amendment is approved.

          i. A total of  $5,000,000  shall have been  deposited  with the Escrow
     Agent by Buyers other than Amber.

     7. INDEMNIFICATION. In consideration of each Buyer's execution and delivery
of this  Agreement and acquiring  the Series D Preferred  Shares and  Conversion
Shares hereunder and in addition to all of the Company's other obligations under
this Agreement,  the Company shall defend, protect,  indemnify and hold harmless
each Buyer and each other  holder of Series D  Preferred  Shares and  Conversion
Shares and all of their officers,  directors,  employees and agents  (including,
without   limitation,   those  retained  in  connection  with  the  transactions
contemplated  by this  Agreement)  (collectively,  the  "Indemnitees")  from and
against any and all actions,  causes of action,  suits, claims,  losses,  costs,
penalties,  fees,  liabilities and damages, and expenses in connection therewith
(irrespective  of whether any such Indemnitee is a party to the action for which
indemnification  hereunder is sought), and including reasonable  attorneys' fees
and disbursements (the "Indemnified  Liabilities'),  incurred by the Indemnitees
or any of them as a  result  of,  or  arising  out of,  or  relating  to (a) any
misrepresentation  or  breach  of any  representation  or  warranty  made by the
Company in this Agreement,  the Certificate of Designations or the  Registration
Rights Agreement or any other certificate, instrument or


                                      12.
<PAGE>


document  contemplated  hereby  or  thereby,  (b) any  breach  of any  covenant,
agreement  or  obligation  of the  Company  contained  in  this  Agreement,  the
Certificate of Designations or the  Registration  Rights  Agreement or any other
certificate,  instrument or document  contemplated hereby or thereby, or (c) any
cause of action,  suit or claim  brought or made  against  such  Indemnitee  and
arising  out of or  resulting  from  the  execution,  delivery,  performance  or
enforcement  of this  Agreement or any other  instrument,  document or agreement
executed pursuant hereto by any of the Indemnitees,  any transaction financed or
to be financed in whole or in part, directly or indirectly, with the proceeds of
the  issuance  of the Series D  Preferred  Shares or the status of such Buyer or
holder of the Series D Preferred Shares or the Conversion  Shares as an investor
in the Company. To the extent that the foregoing  undertaking by the Company may
be unenforceable for any reason, the Company shall make the maximum contribution
to the payment and satisfaction of each of the Indemnified  Liabilities which is
permissible under applicable law.

     8.   GOVERNING LAW; MISCELLANEOUS.

          a. Governing Law. This Agreement  shall be governed by and interpreted
     in accordance  with the laws of the State of California  without  regard to
     the principles of conflict of laws.

          b.  Counterparts.  This  Agreement  may be  executed  in  two or  more
     identical  counterparts,  all of which shall be considered one and the same
     agreement and shall become effective when  counterparts have been signed by
     each party and  delivered  to the other party.  In the event any  signature
     page is delivered by facsimile transmission,  the party using such means of
     delivery shall cause four (4) additional  original executed signature pages
     to be  physically  delivered to the other party within five (5) days of the
     execution and delivery hereof;  provided,  however,  that the failure to so
     deliver shall not invalidate the Agreement.

          c.  Headings.  The headings of this  Agreement are for  convenience of
     reference and shall not form part of, or affect the interpretation of, this
     Agreement.

          d.  Severability.  Any term or  provision of this  Agreement  which is
     invalid  or   unenforceable   in  any   jurisdiction   shall,  as  to  that
     jurisdiction,   be  ineffective  to  the  extent  of  such   invalidity  or
     unenforceability  without  rendering invalid or unenforceable the remaining
     terms and  provisions  of this  Agreement  or  affecting  the  validity  or
     enforceability  of any of the terms or provision  of this  Agreement in any
     other  jurisdiction  so long as the  economic  or  legal  substance  of the
     transactions  contemplated  hereby is not affected in any manner adverse to
     any  party.  If any  provision  of  this  Agreement  is so  broad  as to be
     unenforceable, the provision shall be interpreted to be only so broad as is
     enforceable.

          e. Entire Agreement;  Amendments.  This Agreement supersedes all other
     prior oral or written  agreements  between the Buyers,  the Company,  their
     affiliates  and persons  acting on their behalf with respect to the matters
     discussed herein, and this Agreement and the instruments  referenced herein
     contain the entire understanding of the parties with respect to the matters
     covered herein and therein and, except as specifically  set forth herein or
     therein, neither


                                      13.
<PAGE>


     the Company nor any Buyer makes any representation,  warranty,  covenant or
     undertaking  with respect to such matters.  No provision of this  Agreement
     may be waived or amended other than by an  instrument in writing  signed by
     the Company if the Company is to be charged with enforcement and/or, as the
     case may be, a  majority  in  interest  of the  Buyers to be  charged  with
     enforcement.

          f. Notices.  Any notices,  consents,  waivers or other  communications
     required or permitted to be given under the terms of this Agreement must be
     in writing and will be deemed to have been delivered (i) upon receipt, when
     delivered personally;  (ii) upon receipt, when sent by confirmed facsimile,
     provided a copy is mailed by U.S. certified mail, return receipt requested;
     (iii) five (5) days after being sent by U.S. certified mail, return receipt
     requested,  or (iv) one (1) day after deposit with a nationally  recognized
     overnight delivery service, in each case properly addressed to the party to
     receive  the  same.   The  addresses   and   facsimile   numbers  for  such
     communications shall be:

If to the Company:

         166 Baypointe Parkway
         San Jose, California 95134
         Telephone:        (408) 468-1800
         Facsimile:        (408) 468-1619
         Attention:        President

With a copy to:

         Cooley Godward LLP
         3000 El Camino Real
         Five Palo Alto Square
         Palo Alto, California 94306
         Telephone:        (650) 843-5000
         Facsimile:        (650) 843-5048
         Attention:        Andrei Manoliu, Esq.


     If to a Buyer,  to its  address  and  facsimile  number on the  Schedule of
Investors,  with copies to such Buyer's  counsel as set forth on the Schedule of
Investors.  Each party shall provide ten (10) days' prior written  notice to the
other party of any change in address or facsimile number.

          g.  Successors and Assigns.  This Agreement  shall be binding upon and
     inure to the  benefit of the parties and their  respective  successors  and
     assigns.  Neither  party  shall  assign  this  Agreement  or any  rights or
     obligations hereunder without the prior written consent of the other party,
     except as specifically  set forth in the documents  delivered  herewith.  A
     Buyer may assign its rights  hereunder  without the consent of the Company,
     provided,  however,  that any such assignment  shall not release such Buyer
     from its obligations hereunder unless such


                                      14.
<PAGE>


     obligations  are assumed by such  assignee and the Company has consented to
     such assignment and assumption.

          h. No Third Party  Beneficiaries.  This  Agreement is intended for the
     benefit of the parties hereto and their respective permitted successors and
     assigns,  and is not for the  benefit of, nor may any  provision  hereof be
     enforced by, any other person.

          i. Survival. The representations and warranties of the Company and the
     Buyers  contained in Sections 2 and 3, the  agreements  and  covenants  set
     forth in Sections 4, 7 and this Section  8(i),  shall  survive the Closing.
     Each  Buyer  shall  be  responsible  only  for  its  own   representations,
     warranties, agreements and covenants hereunder.

          j. Further Assurances. Each party shall do and perform, or cause to be
     done and performed, all such further acts and things, and shall execute and
     deliver all such other agreements, certificates, instruments and documents,
     as the other party may reasonably  request in order to carry out the intent
     and accomplish the purposes of this Agreement and the  consummation  of the
     transactions contemplated hereby.

          k.  Placement  Agent.  The Company and the Buyers shall each indemnify
     the other for any  broker's  or finder's  fees for which such  indemnifying
     party is responsible.

          l. No Strict Construction. The language used in this Agreement will be
     deemed to be the  language  chosen by the parties to express  their  mutual
     intent,  and no rules of strict  construction  will be applied  against any
     party.


                                      15.
<PAGE>


     IN WITNESS WHEREOF,  the Buyers and the Company have caused this Securities
Purchase Agreement to be duly executed as of the date first written above.

COMPANY                                          BUYERS

JTS CORPORATION                                  AMBER ARBITRAGE LDC

By: /s/  David T. Mitchell                By: /s/ John Bender
    ----------------------------              ----------------------------------
    Name:  David T. Mitchell                      Name: John Bender
    Its:   President and Chief                    Its: Trading Manager
           Executive Officer


                                                 /s/ Jack Tramiel
                                                 -------------------------------
                                                 Jack Tramiel


                                                 /s/ Sirjang Lal Tandon
                                                 -------------------------------
                                                 Sirjang Lal Tandon


                                                 /s/ David T. Mitchell
                                                 -------------------------------
                                                 David T. Mitchell



                                      16.
<PAGE>


                                    EXHIBIT A
                              SCHEDULE OF INVESTORS

                                                                     Number of
                                                                      Series D
                                                                     Preferred
Investor Name & Address                       Investment              Shares
- -----------------------                       ----------              ------

Amber Arbitrage                               $20,000,750             22,858
c/o Custom House Fund
Management Limited
31 Kildare Street
Dublin 2, Ireland

cc: Tenzer Greenblatt LLP
Attn: Robert Mittman, Esq 
405 Lexington Avenue
New York, NY 10174-0208

Jack Tramiel                                  $ 3,000,375              3,429
18331 Lexington Drive
Monte Sereno, CA 95030

David T. Mitchell                             $   200,375                229
JTS Corporation
166 Baypointe Parkway
San Jose, CA 95134

Sirjang L. Tandon                             $ 2,000,250              2,286
Tandon Associates
2125-B Madera Road
Simi Valley, CA 93065
                                              ------------------------------

TOTAL                                         $25,201,750             28,802



                                 JTS CORPORATION

                             STOCKHOLDERS AGREEMENT

     THIS STOCKHOLDERS AGREEMENT (the "Agreement") is made and entered into this
25th day of September,  1997, by and among Amber Arbitrage LDC, a Cayman Islands
corporation ("Amber"), and those certain undersigned holders of the Common Stock
of JTS Corporation, a Delaware corporation (the "Company"),  listed on Exhibit A
hereto (the "Key Stockholders").

                                   WITNESSETH:

     WHEREAS,  the  Company  proposes  to sell  shares of its Series D Preferred
Stock (the  "Series D  Preferred  Stock") to certain  investors  (the  "Series D
Investors")  pursuant  to  the  Securities  Purchase  Agreement  (the  "Purchase
Agreement")  of even date  herewith  by and among the  Company  and the Series D
Investors (the "Financing");

     WHEREAS,  in connection  with the  consummation  of the Financing,  the Key
Stockholders  have agreed to vote their shares of the Company's capital stock as
set forth below;

     NOW,  THEREFORE,  in  consideration  of the premises and for other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, the parties hereto agree as follows:

                                    ARTICLE 1

                                     VOTING

     1.1 Common Shares.

     1.1.1 Amber and each of the Key Stockholders each agrees to hold all shares
of voting capital stock of the Company  registered in their  respective names or
beneficially owned by them as of the record date of any meeting of the Company's
stockholders covered by this Agreement (hereinafter  collectively referred to as
the "Common  Shares")  subject to, and to vote the Common  Shares in  accordance
with, the provisions of this Agreement.

     1.2 Voting.  Amber and the Key Stockholders hereby covenant and agree that,
prior to the  Expiration  Date (as  defined  below) at any and all  meetings  of
stockholders  of the Company  (each a  "Meeting")  at which an  amendment to the
Company's  Certificate of Incorporation (i) increasing the Company's  authorized
number  of shares  of  Common  Stock to cover at least  the  number of shares of
Common Stock issuable upon  conversion of the Series D Preferred  Stock and (ii)
authorizing   holders  of  not  less  than  twenty-five  percent  (25%)  of  the
outstanding  voting  capital  stock of the Company to call a special  meeting of
stockholders  (the  "Amendment")  is  submitted  for a  vote  of  the  Company's
stockholders,  to vote their respective  shares of the Company's voting stock in
favor of the Amendment.  In the event that at such Meeting, the Amendment is not
passed,  the  obligations of this Section 1.2 shall continue at each  subsequent
meeting of stockholders until the Amendment is passed. The Key Stockholders each


                                       1.
<PAGE>


agree not to convert any of the Series D  Preferred  Stock  registered  in their
respective  names or  beneficially  owned by each of them as of the date  hereof
until the Amendment is approved;  provided, however, that Amber shall be able to
convert  the number of its shares of Series D  Preferred  Stock into the maximum
number of shares of Common Stock that are authorized and reserved as of the date
hereof  for such  conversion  subject  to  restrictions  imposed  by the Lock Up
Agreement executed by Amber of even date herewith.  As used in this Stockholders
Agreement,  the term  "Expiration  Date"  shall mean the earlier of the date the
Amendment is approved or September 25, 2018.

     1.3 Proxy; Further Assurances. Contemporaneously with the execution of this
Stockholders  Agreement,  each of the Key Stockholders  shall deliver to Amber a
proxy in the form attached  hereto as Exhibit B, which shall be  irrevocable  to
the fullest extent permitted by law, with respect to the respective  shares (the
"Proxy").  Each of the Key  Stockholders  shall  perform  such  further acts and
execute such further  documents and instruments as may reasonably be required to
vest in a  designee  of Amber  the  power to carry  out and give  effect  to the
provisions of this Stockholders Agreement. Amber hereby agrees that it will vote
all of its Common Shares in the same manner as it will vote the Proxies and that
the Proxies  shall become null and void at the time Amber  breaches the terms of
this covenant.

     1.4 Other Rights.  Except as provided by this Agreement,  each of Amber and
the Key  Stockholders  shall  be  entitled  to  exercise  the full  rights  of a
stockholder with respect to the Common Shares,  including without limitation the
right to buy or sell  Common  Shares,  provided  such sales are made in the open
market.

                                    ARTICLE 2

                                   TERMINATION

     2.1 This  Agreement  shall  continue in full force and effect from the date
hereof  through  the  earlier of the day after the date of the annual or special
meeting of  stockholders  of the Company in which the  Amendment  is approved or
September 25, 2018. On such day the Agreement shall terminate in its entirety.

                                    ARTICLE 3

                                  MISCELLANEOUS

     3.1  Ownership.  Each of  Amber  and the Key  Stockholders  represents  and
warrants to all other  parties to this  Agreement  that he, or she or it (a) now
owns the Common Shares,  free and clear of liens or  encumbrances,  and has not,
prior to or on the date of this Agreement and other than as contemplated hereby,
executed or delivered  any proxy or entered  into any other voting  agreement or
similar  arrangement other than one which has expired or terminated prior to the
date hereof, and (b) has full power and capacity to execute, deliver and perform
this Agreement, which has been duly executed and delivered by, and evidences the
valid and binding  obligation of, such party  enforceable in accordance with its
terms.


                                       2.
<PAGE>


     3.2 Governing Law. This  Agreement,  and the rights of the parties  hereto,
shall be governed by and  construed in accordance  with the General  Corporation
Law of the State of Delaware.

     3.3  Amendment.  This  Agreement  may be amended only by an  instrument  in
writing  signed by Amber and a majority  in  interest  of the Key  Stockholders.
Notwithstanding  the  foregoing,  the  consent  of a Key  Stockholder  shall  be
required  for any  amendment  or  waiver  of  this  Agreement  which  materially
increases  either such Key  Stockholder's  obligations  or  diminishes  such Key
Stockholder's  rights  under  this  Agreement  (other  than on a pro rata  basis
including Amber).

     3.4  Severability.  Any term or  provision of this  Stockholders  Agreement
which  is  invalid  or  unenforceable  in any  jurisdiction  shall,  as to  that
jurisdiction,   be   ineffective   to  the   extent   of  such   invalidity   or
unenforceability  without rendering invalid or unenforceable the remaining terms
and  provisions  of this  Stockholders  Agreement or  affecting  the validity or
enforceability of any of the terms or provisions of this Stockholders  Agreement
in any other  jurisdiction  so long as the  economic or legal  substance  of the
transactions  contemplated  hereby is not affected in any manner  adverse to any
party.  If any  provision  of this  Stockholders  Agreement is so broad as to be
unenforceable,  the  provision  shall be  interpreted  to be only so broad as is
enforceable.

     3.5 Successors. This Agreement shall inure to the benefit of and be binding
upon the  parties  hereto  and  their  respective  heirs,  successors,  assigns,
administrators, executors and other legal representatives.

     3.6  Additional  Shares.  In the event that  subsequent to the date of this
Agreement any shares or other securities (other than any shares or securities of
another corporation issued to the Company's  Stockholders  pursuant to a plan of
merger) are issued on, or in exchange for, any of the Common Shares by reason of
any stock dividend,  stock split,  consolidation of shares,  reclassification or
consolidation  involving the Company,  such shares or securities shall be deemed
to be Common Shares, for purposes of this Agreement.

     3.7   Counterparts.   This  Agreement  may  be  executed  in  one  or  more
counterparts, each of which will be deemed an original but all of which together
shall constitute one and the same agreement.

     3.8  Waiver.  No waivers of any breach of this  Agreement  extended  by any
party  hereto to any other party shall be construed as a waiver of any rights or
remedies of any other party hereto or with respect to any subsequent breach.

     3.9 Attorney's  Fees. In the event that any suit or action is instituted to
enforce any provision in this Agreement,  the prevailing party shall be entitled
to all  costs  and  expenses  of  maintaining  such  suit or  action,  including
reasonable attorneys' fees.


                                       3.
<PAGE>


     3.10 Entire Agreement.  This Agreement and the Exhibits hereto,  along with
the Purchase Agreement and each of the Exhibits thereto, constitute the full and
entire  understanding  and  agreement  between  the  parties  with regard to the
subjects  hereof and  thereof and no party shall be liable or bound to any other
in any  manner by any  representations,  warranties,  covenants  and  agreements
except as specifically set forth herein and therein.


                                       4.
<PAGE>


                             SHAREHOLDERS AGREEMENT

     IN WITNESS  WHEREOF,  the parties  hereto have executed  this  Stockholders
Agreement as of the date first above written.



KEY STOCKHOLDERS:                               
                                                AMBER ARBITRAGE LDC  
/s/ Helen Tramiel   
- ---------------------------------               c/o Custom House Fund
Helen Tramiel                                   Management Limited
                                                31 Kildare Street  
                                                Dublin 2, Ireland
/s/ Jack Tramiel                                
- --------------------------------                By: /s/ John Bender    
Jack Tramiel                                       ---------------------------- 
                                                    Title: Trading Manager     
                                                
/s/ David T. Mitchell
- --------------------------------
David T. Mitchell                               


Alta V Limited Partnership 
By: Alta V Limited Partners, L.P.
                                                
/s/ Jean Deleage                                                
- --------------------------------                
Jean Deleage
General Partner


Lunenburg S A

/s/ J. Tandon
- --------------------------------
J. Tandon


D & U Tandon LLC

/s/ Devindaer Tandon
- --------------------------------
Devindaer Tandon


/s/ Sirjang Lal Tandon
- --------------------------------
Sirjang Lal Tandon


Tandon Family Partnership

/s/ Sirjang Lal Tandon
- --------------------------------
Sirjang Lal Tandon


J & S Tandon, LLC

/s/ J. Tandon
- --------------------------------
J. Tandon


Lunenburg S A

/s/ J. Tandon
- --------------------------------
J. Tandon


<PAGE>


                                    EXHIBIT A

                            LIST OF KEY STOCKHOLDERS



Helen Tramiel
Jack Tramiel
David T. Mitchell
Alta V Limited Partnership
Lunenburg S A
D & U Tandon LLC
Sirjang Lal Tandon
Tandon Family Partnership
J & S Tandon, LLC
Lunenburg S A


<PAGE>


                                    EXHIBIT B

                                IRREVOCABLE PROXY

     Each  of the  undersigned  stockholders  of  JTS  Corporation,  a  Delaware
corporation (the "Company"), hereby irrevocably (to the fullest extent permitted
by law) appoints and constitutes John Bender ("Bender") as attorney and proxy of
the undersigned with full power of substitution and resubstitution,  to the full
extent of the  undersigned's  rights with respect to the shares of capital stock
of the Company owned by the  undersigned as of the record date of any meeting of
the stockholders of the Company to which this proxy pertains. (The shares of the
capital stock of the Company referred to in the immediately  preceding  sentence
are referred to as the "Shares.") Upon the execution  hereof,  all prior proxies
given by the  undersigned  with respect to any of the Shares are hereby revoked,
and no subsequent proxies will be given with respect to any of the Shares for as
long as this Proxy remains in effect.

     This proxy is  irrevocable  and is coupled with an interest.  This proxy is
granted in  connection  with the  Stockholders  Agreement of even date  herewith
between  Amber  Arbitrage  LDC  ("Amber")  and  each  of  the  undersigned  (the
"Stockholders  Agreement")  and in  consideration  of  Amber  entering  into the
Securities Purchase Agreement of even date herewith among the Company, Amber and
certain  investors  (the  "Purchase  Agreement")  and  in  consideration  of the
benefits  accruing  to the  undersigned  by  virtue of Amber  entering  into the
Securities Purchase Agreement.  Capitalized terms used but not otherwise defined
in this  proxy have the  meanings  assigned  to such  terms in the  Stockholders
Agreement.

     The attorney and proxy named above will be empowered, and may exercise this
proxy,  to vote the Shares at any meeting of the  stockholders of the Company in
favor  of an  amendment  to the  Company's  Certificate  of  Incorporation  (the
"Amendment") to (i) increase the Company's authorized number of shares of Common
Stock to cover at least the  number of shares  of  Common  Stock  issuable  upon
conversion  of the Series D  Preferred  Stock (as  defined  in the  Stockholders
Agreement) and (ii)  authorizing  holders of not less than  twenty-five  percent
(25%) of the  outstanding  voting capital stock of the Company to call a special
meeting of  stockholders.  This proxy shall terminate and have no further effect
following  the earlier to occur of (x) the approval by the  stockholders  of the
Amendment or (y) September 25, 2018.

     This proxy shall be binding upon the heirs,  successors  and assigns of the
undersigned  (including  any  transferee  of  any  of  the  Shares,  except  for
transferees of the undersigned in open market transactions).



     Dated: September 25, 1997

                                      /s/ Helen Tramiel
                                      ------------------------------------------

                                      Name: Helen Tramiel
                                            ------------------------------------


<PAGE>


                                      Number of Shares of Company Common  
                                      Stock: 11,597,135
                                             -----------------------------------

                                      /s/ Jack Tramiel
                                      ------------------------------------------
                                      Name: Jack Tramiel


                                      Number of Shares of Company Common  
                                      Stock: 707,611
                                             -----------------------------------

                                      /s/ David T. Mitchell
                                      ------------------------------------------
                                      Name: David T. Mitchell


                                      Number of Shares of Company Common  
                                      Stock: 4,010,196
                                             -----------------------------------

                                      Alta V Limited Partnership
                                      By: Alta V Management Partners, L.P.

                                      By: /s/ Jean Deleage
                                          --------------------------------------
                                          General Partner


                                      Number of Shares of Company Common  
                                      Stock: 3,896,550
                                             -----------------------------------

                                      Lunenburg SA

                                      /s/ J. Tandon
                                      ------------------------------------------


                                      Number of Shares of Company Common  
                                      Stock: 1,911,673
                                             -----------------------------------

                                      D & U Tandon LLC

                                      /s/ Devindaer Tandon
                                      ------------------------------------------
                                      

                                      Number of Shares of Company Common  
                                      Stock: 1,013,336
                                             -----------------------------------

                                      /s/ Sirjang Lal Tandon
                                      ------------------------------------------
                                      Name: Sirjang Lal Tandon


                                      Number of Shares of Company Common  
                                      Stock: 1,000,000
                                             -----------------------------------

                                      Tanon Family Partnership

                                      /s/ Sirjang Lal Tandon
                                      ------------------------------------------
                                      


<PAGE>




                                      Number of Shares of Company Common  
                                      Stock: 4,350,000
                                             -----------------------------------

                                      J & S Tandon, LLC

                                      /s/ J. Tandon
                                      ------------------------------------------
                                      

                                      Number of Shares of Company Common  
                                      Stock: 1,013,335
                                             -----------------------------------

                                      Lunenburg SA

                                      /s/ J. Tandon
                                      ------------------------------------------
                                      


                                      Number of Shares of Company Common  
                                      Stock: 500,000
                                             -----------------------------------




                                 JTS CORPORATION
                             SALE LOCK-UP AGREEMENT



                               September 25, 1997


JTS Corporation
166 Baypointe Parkway
San Jose, CA 95134

Ladies and Gentlemen:

     Each of the undersigned  desires to purchase shares of Series D Convertible
Preferred  Stock  ("Series D  Preferred")  of JTS  Corporation  (the  "Company")
pursuant to the Securities  Purchase  Agreement dated of even date herewith (the
"Purchase Agreement").

     In  consideration  of the  foregoing,  and as a condition to such purchase,
each of the undersigned  hereby  irrevocably agrees that he, she or it will not,
without the prior written approval of the Company, for a period of one year (the
"Full Lock-up Period") from the date hereof, offer, sell, contract to sell, make
any short sale  (including,  but not  limited  to, a "short  against  the box"),
pledge, or otherwise dispose of directly or indirectly,  more than fifty percent
(50%) of the  shares  of  Series D  Preferred  or  Common  Stock  issuable  upon
conversion of such fifty percent (50%) of the shares of Series D Preferred (such
fifty percent (50%) being referred to herein as the "Securities")  which he, she
or it may  own  directly  or  indirectly  or  beneficially  (as  defined  by the
Securities  Exchange  Act of 1934 and the  rules  and  regulations  thereunder);
provided  however,  that  this  Agreement  shall  terminate,  and the  foregoing
restriction  shall be of no  further  force  and  effect,  in the case of (i) an
Acquisition or Asset Transfer (both as defined in the Certificate of Designation
of the Series D  Preferred),  (ii) the  Company's  failure to obtain  timely SEC
effectiveness of the Form S-3 registration  statement pursuant to Section 2.2(a)
of  the  Registration  Rights  Agreement  of  even  date  herewith,   (iii)  the
commencement  by the Company of bankruptcy  proceedings,  or (iv) an involuntary
bankruptcy  proceeding which the Company has not succeeded in dismissing  within
sixty (60) days of its commencement.

     The foregoing  restriction  is expressly  agreed to preclude each holder of
Securities from engaging in any hedging or other transaction that is designed to
or  reasonably  expected to lead to, or result in, a  disposition  of Securities
during the Lock-Up Period even if such Securities would be disposed of by any of
the undersigned subsequent to the Lock-up Period or by someone other than one of
the  undersigned.  Nothing herein shall prevent the undersigned from engaging in
direct sales  through the American  Stock  Exchange of Common Stock owned by the
undersigned prior to September 25, 1997.

     Notwithstanding the foregoing,  any transfer of Securities which either (i)
will not  result  in any  change in  beneficial  ownership,  including,  but not
limited to, pro rata partnership distributions and transfers into trusts for the
benefit  of the  original  holder,  or (ii)  constitute  bona fide gifts of such
shares, will not require your consent provided that the transferee enters into


                                       1.
<PAGE>


a lock-up  agreement in substantially  the form hereof covering the remainder of
the Lock-up Period under this Agreement.

     Each of the  undersigned  confirms that he, she or it understands  that the
Company  will  rely upon the  representations  set  forth in this  Agreement  in
proceeding  with  purchase  and sale of the Series D  Preferred  pursuant to the
Purchase Agreement.  Each of the undersigned  understands that this Agreement is
irrevocable  and  shall  be  binding  on the  undersigned  and  his,  her or its
respective successors,  heirs, personal representatives and assigns. Each of the
undersigned agrees and consents to the entry of stop transfer  instructions with
the Company's  transfer agent against the transfer of the  Securities  except in
compliance with this Agreement.




                                         Amber Arbitrage LDC

                                         By: /s/ John Bender
                                             -----------------------------------
                                         Name: John Bender
                                         Its: Trading Manager


                                         /s/ Jack Tramiel
                                         ---------------------------------------
                                         Jack Tramiel


                                         /s/ Sirjang Lal Tandon
                                         ---------------------------------------
                                         Sirjang Lal Tandon


                                         /s/ David T. Mitchell
                                         ---------------------------------------
                                         David T. Mitchell


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