PINNACLE SYSTEMS INC
S-3/A, 1999-08-17
PHOTOGRAPHIC EQUIPMENT & SUPPLIES
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     As filed with the Securities and Exchange Commission on August 17, 1999
                                                  Registration No. 333-84739
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                AMENDMENT NO. 1
                                       to
                                    FORM S-3

                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

                                   ----------

                             PINNACLE SYSTEMS, INC.
             (Exact name of Registrant as specified in its charter)

       California                   280 North Bernardo Ave.       94-3003809
(State or other jurisdiction            Mountain View,          (I.R.S. Employer
    of incorporation                   California 94043          Identification
    or organization)                    (650) 526-1600               Number)

               (Address, including zip code, and telephone number,
        including area code, of Registrant's principal executive offices)

                                   ----------

                               Arthur D. Chadwick
                   Vice President, Finance and Administration,
                             Pinnacle Systems, Inc.
                            280 North Bernardo Avenue
                         Mountain View, California 94043
                                 (650) 526-1600
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                   ----------

                                   Copies to:
                             Chris F. Fennell, Esq.
                     Wilson Sonsini Goodrich & Rosati, P.C.
                               650 Page Mill Road
                        Palo Alto, California 94304-1050
                                 (650) 493-9300

                                   ----------

Approximate  date of  commencement  of proposed  sale to the public:  As soon as
practicable after the effective date of this Registration Statement.

If the only securities  being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. [ ]

If any of the  securities  being  registered on this form are to be offered on a
delayed or continuous  basis  pursuant to Rule 415 under the  Securities  Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [ X ]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the  Securities  Act  registration  statement  number of the  earlier  effective
registration statement for the same offering. [ ]

If this Form is a  post-effective  amendment filed pursuant to Rule 462(c) under
the  Securities  Act,  check  the  following  box and  list the  Securities  Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [ ]

If delivery  of the  prospectus  is  expected  to be made  pursuant to Rule 434,
please check the following box. [ ]

<TABLE>
                                                   CALCULATION OF REGISTRATION FEE

====================================================================================================================================
<CAPTION>
                                                                                Proposed          Proposed
                   Title of Each Class                          Amount           Maximum          Maximum
                      of Securities                              to be       Offering Price       Aggregate            Amount of
                     to be Registered                         Registered      Per Share(1)    OfferingPrice(1)      Registration fee
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                         <C>                  <C>           <C>                       <C>
Common Stock, no par value(2)..........................     386,586 shares       $28.94        $11,187,799               $3,110(3)
====================================================================================================================================
<FN>
(1) Estimated solely for the purpose of computing the amount of the  registration  fee. The estimate is made pursuant to Rule 457(c)
of the Securities Act of 1933, as amended, based on the average of the high and low prices on August 10, 1999.

(2) Includes Preferred Share Purchase Rights which, prior to the occurrence of certain events,  will not be exercisable or evidenced
separately from the Common Stock.

(3) A filing fee of $2,529 was paid on August 6, 1999.
</FN>
</TABLE>
================================================================================

The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933  or  until  the  Registration  Statement  shall  become
effective on such date as the SEC,  acting  pursuant to said Section  8(a),  may
determine.

<PAGE>

The information contained in this prospectus is not complete and may be changed.
It is subject to completion or amendment.  A registration  statement relating to
these securities has been filed with the Securities and Exchange Commission.  We
may  not  sell  these  securities  until  the  registration   statement  becomes
effective.  This  prospectus is not an offer to sell these  securities and it is
not soliciting an offer to buy these  securities in any state in which the offer
or sale is not permitted.


PROSPECTUS (SUBJECT TO COMPLETION)
Issued August 17, 1999

                                 386,586 Shares

                             PINNACLE SYSTEMS, INC.

                                  COMMON STOCK

                                   ----------

         These   shares  may  be   offered   and  sold  from  time  to  time  by
Hewlett-Packard Company, the selling shareholder. See "Selling Shareholder." The
selling  shareholder  acquired the shares in connection  with the acquisition by
Pinnacle Systems, Inc. of certain assets from such selling shareholder.

         The selling  shareholder  will receive all of the net proceeds from the
sale  of the  shares  and  will  pay  all  underwriting  discounts  and  selling
commissions,  if any, applicable to the sale of the shares. The Company will not
receive any of the proceeds from the sale of the shares.

         YOU SHOULD CONSIDER  CAREFULLY THE RISK FACTORS BEGINNING ON PAGE 4  OF
THIS PROSPECTUS BEFORE PURCHASING ANY OF THE COMMON STOCK OFFERED HEREBY.

         Pinnacle's  common stock is traded on the Nasdaq  National Market under
the symbol  "PCLE." On August 16,  1999,  the  closing  sale price of a share of
Pinnacle's Common Stock was $31.875.

                                   ----------

         Neither the Securities and Exchange Commission nor any state securities
commission  has approved or disapproved  these  securities or determined if this
prospectus  is truthful or  complete.  Any  representation  to the contrary is a
criminal offense.

                                   ----------



                                August ___, 1999

<PAGE>

                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----
Available Information........................................................  2
Information Incorporated by Reference........................................  2
Forward Looking Information..................................................  3
The Company..................................................................  4
Risk Factors.................................................................  4
Use of Proceeds.............................................................. 13
Selling Shareholder.......................................................... 13
Plan of Distribution......................................................... 13
Experts...................................................................... 14
Legal Matters................................................................ 14

         You should rely only on the information  contained in this  prospectus.
We have not  authorized  anyone to provide you with  information  different from
that contained in this prospectus.  The selling stockholder is offering to sell,
and seeking  offers to buy,  shares of PCLE common  stock only in  jurisdictions
where  offers  and  sales  are  permitted.  The  information  contained  in this
prospectus is accurate only as of the date of this prospectus, regardless of the
time of delivery of this prospectus or of any sale of the shares.

         In this prospectus, "Pinnacle," "we," "us," and "our" refer to Pinnacle
Systems, Inc. and its subsidiaries.



                              AVAILABLE INFORMATION

         We file annual,  quarterly and special  reports,  proxy  statements and
other information with the Securities and Exchange Commission referred to as the
SEC. You may read and copy any  document we file at the SEC's  public  reference
facilities in Room 1034, 450 Fifth Street, N.W., Washington,  D.C. 20549, and at
the SEC's  regional  offices at  Northwestern  Atrium  Center,  500 West Madison
Street,  Suite 1400,  Chicago,  Illinois  60661 and 7 World Trade Center,  Suite
1300,  New York,  New York  10048.  Please  call the SEC at  1-800-SEC-0330  for
further  information  on the public  reference  rooms.  Our SEC filings are also
available to the public at the SEC's web site at http://www.sec.gov.



                      INFORMATION INCORPORATED BY REFERENCE

         The SEC allows us to "incorporate by reference" the information we file
with them,  which means that we can  disclose  important  information  to you by
referring you to those documents.  The information  incorporated by reference is
considered to be a part of this prospectus,  and later  information that we file
with the SEC will  automatically  update  and  supersede  this  information.  We
incorporate by reference the documents listed below, and any future filings made
with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange
Act of 1934,  as amended,  until the selling  stockholders  sell all the shares.
This  prospectus  is part of a  Registration  Statement  we  filed  with the SEC
(Registration No. 333-84739). The documents we incorporate by reference are:

                                      -2-
<PAGE>

         1.       our Annual  Report on Form 10-K for the fiscal year ended June
                  30, 1998;

         2.       our  Quarterly  Report  on Form  10-Q  for the  quarter  ended
                  September 30, 1998;

         3.       our  Quarterly  Report  on Form  10-Q  for the  quarter  ended
                  December 31, 1998;

         4.       our Quarterly  Report on Form 10-Q for the quarter ended March
                  31, 1999;

         5.       our Current  Report on Form 8-K as filed with the SEC on March
                  26, 1999;

         6.       Our Current Report on Form 8-K as filed with the SEC on August
                  13, 1999;

         7.       the description of the Company's Common Stock contained in its
                  Registration  Statement  on Form 8-A as filed  with the SEC on
                  September 9, 1994; and

         8.       the  description  of the Company's  Preferred  Share  Purchase
                  Rights contained in its Registration  Statement on Form 8-A as
                  filed with the SEC on December  19,  1996,  as amended May 19,
                  1998.

         You may request a copy of these filings, at no cost, by written or oral
request to the following  address:  Chief Financial  Officer,  Pinnacle Systems,
Inc., 280 North Bernardo  Avenue,  Mountain View,  California  94043;  telephone
number (650) 526-1600.

                           FORWARD LOOKING INFORMATION

         This  Prospectus,  including the information  incorporated by reference
herein, contains forward-looking statements within the meaning of Section 27A of
the Securities Act of 1933, as amended (the  "Securities  Act"), and Section 21E
of the Securities  Exchange Act of 1934.  Actual results could differ materially
from those projected in the  forward-looking  statements as a result of the risk
factors set forth below.  Reference is made in particular to the  discussion set
forth under  "Management's  Discussion  and Analysis of Financial  Condition and
Results of  Operations"  in the Annual  Report on Form 10-K for the fiscal  year
ended June 30,  1998,  incorporated  herein by  reference.  In  connection  with
forward-looking  statements  which  appear  in  these  disclosures,  prospective
purchasers of the Common Stock  offered  hereby  should  carefully  consider the
factors set forth in this Prospectus under "Risk Factors."

                                      -3-
<PAGE>

                                   THE COMPANY

         We design, manufacture,  market and support video post-production tools
for high quality real time video  processing.  The  Company's  products  combine
computer based and specialized  video  processing  technologies  which perform a
variety  of video  post-production  functions  such as the  addition  of special
effects,  graphics and titles to multiple streams of live or previously recorded
video material.  The Company's products address needs in the broadcast,  desktop
or professional and consumer video post-production markets.

         The  Company  was  incorporated  in  California  in 1986.  The  Company
maintains its executive  offices at 280 North  Bernardo  Avenue,  Mountain View,
California 94043, and its telephone number is (650) 526-1600.

                                  RISK FACTORS

         We have grown  rapidly and expect to continue  to grow  rapidly.  If we
fail to effectively manage this growth, our financial results could suffer.

         We have in the past experienced rapid growth and anticipate that we may
grow at a rapid pace in the future.  For example,  net sales in fiscal 1998 were
$105.3  million  compared  to $37.5  million in fiscal 1997 and net sales in the
nine-month period ended March 31, 1999 increased 51.4% over the same period last
year.  As a result of  recent  acquisitions,  we have  increased  the  number of
employees,  including the addition of approximately  235 employees in connection
with the Hewlett-Packard, Inc.,  Truevision,  Inc. and miro Computer Products AG
acquisitions,  and many are now  geographically  dispersed.  This growth  places
increasing  demands on our management,  financial and other  resources.  We have
built these  resources  and systems to account for such  growth,  but  continued
and/or  accelerated  growth may require us to increase  our  investment  in such
systems, or to reorganize our management team. Such changes,  should they occur,
could  cause  an  interruption  or  diversion  of focus  from our core  business
activities and have an adverse effect on financial results.

         Any failure to  successfully  integrate the businesses we have acquired
could negatively impact us.

         In August 1999, we closed the transaction  with  Hewlett-Packard  Inc.,
and in  March  1999,  we  completed  the  acquisitions  of  Truevision,  Inc and
Shoreline Studios,  Inc. We may in the near- or long-term pursue acquisitions of
complementary  businesses,   products  or  technologies.   Integrating  acquired
operations is a complex,  time-consuming and expensive process. All acquisitions
involve  risks that could  materially  and  adversely  affect our  business  and
operating results. These risks include:

         -        Distracting  management from the day-to-day  operations of our
                  business

         -        Costs,  delays and inefficiencies  associated with integrating
                  acquired operations, products and personnel

         -        The  potential  to result in  dilutive  issuance of our equity
                  securities

         -        The incurrence of debt and  amortization  expenses  related to
                  goodwill and other intangible assets

         There  are  various  factors  which  may  cause  our net  revenues  and
operating results to fluctuate.

         Our quarterly and annual operating results have varied significantly in
the past and may continue to fluctuate  because of a number of factors,  many of
which are outside our control. These factors include:

         -        Timing of  significant  orders from and shipments to major OEM
                  customers

                                      -4-
<PAGE>

         -        Timing and market acceptance of new products

         -        Success in developing, introducing and shipping new products

         -        Dependence on distribution channels through which our products
                  are sold

         -        Increased competition and pricing pressure

         -        Accuracy  of our  and our  resellers'  forecasts  of end  user
                  demand

         -        Accuracy of inventory forecasts

         -        Ability to obtain sufficient supplies from our subcontractors

         -        Timing and level of consumer product returns

         -        Foreign currency fluctuations

         -        Costs of integrating acquired operations

         -        General domestic and international  economic conditions,  such
                  as the recent economic downturn in Asia and Latin America.

         We also experience significant  fluctuations in orders and sales due to
seasonal fluctuations,  the timing of major trade shows and the sale of consumer
products in anticipation  of the holiday season.  Sales usually slow down during
the summer months of July and August,  especially  in Europe.  Also, we attend a
number of annual trade shows which can  influence the order pattern of products,
including CEBIT in March,  the NAB convention held in April,  the IBC convention
held in September  and the COMDEX  exhibition  held in November.  Our  operating
expense levels are based, in part, on our expectations of future revenue and, as
a result, net income would be disproportionately  affected by a shortfall in net
sales. Due to these factors, we believe that  quarter-to-quarter  comparisons of
our  results of  operations  are not  necessarily  meaningful  and should not be
relied upon as indicators of future performance.

         Our stock price may be volatile.

         The trading  price of our common stock has in the past and could in the
future  fluctuate  significantly.  The  fluctuations  have  been or  could be in
response to numerous factors including:

         -        Quarterly variations in results of operations

         -        Announcements of technological  innovations or new products by
                  us, our customers or competitors

         -        Changes in securities analysts' recommendations

         -        Announcements of acquisitions

         -        Earnings estimates for us

         -        General fluctuations in the stock market

                                      -5-
<PAGE>

         Our revenues and results of operations may be below the expectations of
public market  securities  analysts or  investors.  This could result in a sharp
decline in the market price of our common stock.

         In addition,  stock markets have from time to time experienced  extreme
price and volume  fluctuations.  The market prices for high technology companies
have been  particularly  affected by these market  fluctuations and such effects
have often been unrelated to the operating performance of such companies.  These
broad market  fluctuations may cause a decline in the market price of our common
stock.

         In the past,  following  periods of volatility in the market price of a
company's stock, securities class action litigation has been brought against the
issuing company.  Although no such litigation has been brought against us, it is
possible that similar  litigation  could be brought  against us. Such litigation
could result in substantial costs and would likely divert management's attention
and resources.  Any adverse  determination in such litigation could also subject
us to significant liabilities.

         We may fail to sell products in the consumer market.

         We entered the consumer  market with the purchase of the  VideoDirector
product line from Gold Disk in June 1996. We began shipping our first internally
developed  consumer  product,  the  VideoDirector  Studio 200, in March 1997 and
began  shipping a successor  product,  the Studio 400 in June 1998. In addition,
with the Miro  Acquisition in August 1997, we acquired Miro's consumer  products
and  European  sales  organization.  We aim to continue to expend  resources  to
develop, market and sell products into the consumer market. In this endeavor, we
need to continue to develop and maintain the following capabilities:

         -        Marketing   and  selling   products   through   the   consumer
                  distribution channels.

         -        Establish relationships with distributors and retailers

         -        A fully developed  infrastructure to support electronic retail
                  stores and telephone and Internet orders.

         Additionally,  factors  beyond our control could hurt consumer  product
sales and consequently our financial condition. These factors include:

         -        Potential  compatibility  problems  with other  manufacturers'
                  electronic components

         -        The risk of obsolete inventory and inventory returns

         -        The  growth  of the  consumer  video  market is  difficult  to
                  predict

                                      -6-
<PAGE>

         If our products do not keep pace with the technological developments in
the rapidly changing video  post-production  equipment industry,  then we may be
adversely affected.

         The  video  post-production  equipment  industry  is  characterized  by
rapidly  changing  technology,  evolving  industry  standards  and  frequent new
product  introductions.  The introduction of products embodying new technologies
or the emergence of new industry standards can render existing products obsolete
or  unmarketable.  Delays in the  introduction  or  shipment  of new or enhanced
products,  our inability to timely develop and introduce such new products,  the
failure of such  products  to gain  significant  market  acceptance  or problems
associated  with new product  transitions  could  materially  harm our business,
particularly on a quarterly basis.

         We are  critically  dependent on the  successful  introduction,  market
acceptance,  manufacture  and sale of new  products  that  offer  our  customers
additional  features and enhanced  performance at competitive prices. Once a new
product is developed,  we must rapidly commence volume production.  This process
requires  accurate  forecasting  of  customer  requirements  and  attainment  of
acceptable  manufacturing  costs. The  introduction of new or enhanced  products
also  requires us to manage the  transition  from older,  displaced  products in
order to minimize  disruption in customer  ordering  patterns,  avoid  excessive
levels of older product  inventories  and ensure that  adequate  supplies of new
products can be delivered to meet customer demand. For example, the introduction
of DVExtreme,  Lightning and Studio 400 has resulted in a significant decline in
sales of Prizm,  Flashfile  and  Studio 200 and a write  down of  inventory.  In
addition,  as  is  typical  with  any  new  product  introduction,  quality  and
reliability  problems  may  arise.  Any such  problems  could  result in reduced
bookings,  manufacturing rework costs, delays in collecting accounts receivable,
additional  service warranty costs and a limitation on market  acceptance of the
product.
         If we do not effectively compete, our business will be harmed.

         The market for our  products is highly  competitive.  We compete in the
broadcast,   desktop  and  consumer  video  production  markets.  We  anticipate
increased  competition  in each of the  broadcast,  desktop and  consumer  video
production  markets,  particularly  since the industry is undergoing a period of
technological change and consolidation.  Competition for our broadcast, consumer
and video products is generally based on:

         -        Product performance

         -        Breadth of product line

         -        Quality of service and support

         -        Market presence

         -        Price

         -        Ability of  competitors  to develop new,  higher  performance,
                  lower cost consumer video products

         Certain  competitors in the  broadcast,  consumer and video market have
larger financial,  technical,  marketing,  sales and customer support resources,
greater name  recognition  and larger  installed  customer  bases than we do. In
addition,  some  competitors  have  established  relationships  with current and
potential customers of ours and offer a wide variety of video equipment that can
be bundled in certain large system sales.

                                      -7-
<PAGE>

         Principal competitors in the broadcast market include:

                  Chyron Corporation
                  Matsushita Electric Industrial Co. Ltd.
                  Quantel Ltd. (a division of Carlton Communications Plc)
                  Accom, Inc.
                  Sony Corporation
                  Tektronix
                  SeaChange

         Principal competitors in the desktop and consumer markets are:

                  Quantel Ltd. (a division of Carlton Communications Plc)
                  Accom, Inc.
                  Sony Corporation
                  Avid Technology, Inc.
                  Digitel Processing Systems, Inc.
                  Fast Multimedia
                  Iomega Corp.
                  Matrox Electronics Systems, Ltd.
                  Hauppauge
                  Media 100, Inc.
                  Adobe Systems, Inc.

         These lists are not all-inclusive.

         The  consumer  market in which  certain of our  products  compete is an
emerging market and the sources of competition  are not yet well defined.  There
are several  established video companies that are currently offering products or
solutions  that compete  directly or  indirectly  with our consumer  products by
providing  some or all of the same features and video editing  capabilities.  In
addition,  we expect that existing  manufacturers  and new market  entrants will
develop new,  higher  performance,  lower cost consumer  video products that may
compete  directly  with  our  consumer   products.   We  expect  that  potential
competition  in this  market  is  likely to come  from  existing  video  editing
companies, software application companies, or new entrants into the market, many
of which  have the  financial  resources,  marketing  and  technical  ability to
develop products for the consumer video market.  Increased competition in any of
these  markets  could result in price  reductions,  reduced  margins and loss of
market share. Any of these effects could materially harm our business.

         We are dependent on contract manufacturers and single or limited source
suppliers for our components.  If these  manufacturers and suppliers do not meet
our demand either in volume or quality, then we could be materially harmed.

         We rely on  subcontractors to manufacture our consumer products and the
major  subassemblies  of  our  broadcast  and  desktop  products.   We  and  our
manufacturing  subcontractors  are  dependent  upon  single  or  limited  source
suppliers for a number of components  and parts used in our products,  including
certain key  integrated  circuits.  Our strategy to rely on  subcontractors  and
single or  limited  source  suppliers  involves a number of  significant  risks,
including:

         -        Loss of control over the manufacturing process

         -        Potential absence of adequate capacity

         -        Potential delays in lead times

                                      -8-
<PAGE>

         -        Unavailability of certain process technologies

         -        Reduced control over delivery schedules, manufacturing yields,
                  quality and costs

         -        Unexpected increases in component costs

         If any significant  subcontractor or single or limited source suppliers
becomes unable or unwilling to continue to manufacture  these  subassemblies  or
provide critical  components in required  volumes,  we will have to identify and
qualify  acceptable   replacements  or  redesign  our  products  with  different
components. Additional sources may not be available and product redesign may not
be feasible on a timely basis.  This could  materially  harm our  business.  Any
extended  interruption in the supply of or increase in the cost of the products,
subassemblies  or  components  manufactured  by third  party  subcontractors  or
suppliers could materially harm our business.

         We rely heavily on dealers and OEMs to market, sell, and distribute our
products. In turn, we depend heavily on the success of these resellers. If these
resellers do not succeed in  effectively  distributing  our  products,  then our
financial performance will be negatively affected.

         These resellers may:

         -        Not effectively promote or market our products

         -        Experience financial difficulties and even close operations

         Our dealers and retailers are not  contractually  obligated to sell our
products. Therefore, they may, at any time:

         -        Refuse to promote or pay for our products

         -        Discontinue our products in favor of a  competitor's product

         Also, with these  distribution  channels  standing between them and the
actual  market,  we may not be able  to  accurately  gauge  current  demand  for
products  and  anticipate  demand for newly  introduced  products.  For example,
dealers may place  large  initial  orders for a new  product  just to keep their
stores  stocked with the newest  products and not because there is a significant
demand for them.

         As to consumer  products  offerings,  we have expanded our distribution
network to include several consumer  channels,  including large  distributors of
products  to  computer  software  and  hardware  retailers,  which in turn  sell
products to end users.  We also sell our consumer  products  directly to certain
retailers.   Rapid  change  and  financial  difficulties  of  distributors  have
characterized   distribution  channels  for  consumer  retail  products.   These
arrangements  have exposed us to the following  risks,  some of which are out of
our control:

         -        We are obligated to provide price protection to such retailers
                  and   distributors   and,  while  the  agreements   limit  the
                  conditions  under which  product can be returned to us, we may
                  be faced with product returns or price protection obligations.

         -        The  distributors  or retailers  may not continue to stock and
                  sell our consumer products.

         -        Retailers  and  retail   distributors  often  carry  competing
                  products.

         Any of the foregoing events could materially harm our business.

                                      -9-
<PAGE>

         If certain of our key employees  leave or are no longer able to perform
services for us, it could have a material adverse effect on our business.

         We believe that the efforts and abilities of our senior  management and
key technical personnel are very important to our continued success. Only one of
our senior  management  or key  technical  personnel  is bound by an  employment
agreement and none are the subject of key man life insurance.

         We may not be  able to  attract  and  retain  a  sufficient  number  of
managerial personnel and technical employees to compete successfully.

         Our  success  is  dependent  upon our  ability  to  attract  and retain
qualified  technical and managerial  personnel.  There are not enough engineers,
technical support,  software services and managers available to meet the current
demands of the computer industry. We may not be able to retain our key technical
and  managerial  employees or attract,  assimilate  and retain such other highly
qualified  technical and managerial  personnel as required in the future.  Also,
employees  may  leave  our  employ  and  subsequently  compete  against  us,  or
contractors  may perform  services for  competitors of ours. If we are unable to
retain key personnel, our business could be materially harmed.

         We may be unable to protect our proprietary  information and procedures
effectively.

         We  must  protect  our  proprietary   technology  and  operate  without
infringing the intellectual  property rights of others. We rely on a combination
of patent,  copyright,  trademark  and trade secret laws and other  intellectual
property protection methods to protect our proprietary technology.  In addition,
we generally enter into  confidentiality  and nondisclosure  agreements with our
employees  and  OEM  customers  and  limit  access  to and  distribution  of our
proprietary technology.  These steps may not protect our proprietary information
nor  give  us  any  competitive  advantage.  Others  may  independently  develop
substantially  equivalent  intellectual property or otherwise gain access to our
trade secrets or intellectual  property,  or disclose such intellectual property
or trade secrets.  If we are unable to protect our  intellectual  property,  our
business could be materially harmed.

         We may be  adversely  affected if we are sued by a third party or if we
decide to sue a third party for infringement.

         There has been substantial  litigation regarding patent,  trademark and
other  intellectual  property  rights  involving  technology  companies.  In the
future,  litigation  may be  necessary  to enforce any patents  issued to us, to
protect our trade secrets,  trademarks and other  intellectual  property  rights
owned by us, or to defend us against claimed infringement. This litigation may

         -        Divert  management's  attention away from the operation of our
                  business

         -        Result in the loss of our proprietary rights

         -        Subject us to significant liabilities

         -        Force us to seek licenses from third parties

         -        Prevent us from manufacturing or selling products.

         Any of these results could materially harm our business.

                                      -10-
<PAGE>

         In the course of business, we have in the past received  communications
asserting  that our products  infringe  patents or other  intellectual  property
rights  of  third   parties.   We   investigated   the  factual  basis  of  such
communications and negotiated  licenses where appropriate.  It is likely that in
the  course of our  business,  we will  receive  similar  communications  in the
future.  While it may be necessary or desirable in the future to obtain licenses
relating  to one or more of our  products,  or  relating  to  current  or future
technologies, we may not be able to do so on commercially reasonable terms or at
all. These disputes may not be settled on commercially  reasonable terms and may
result in long and costly litigation.

         Because we sell products internationally,  we are subject to additional
risks.

         Sales  of  our   products   outside   of  North   America   represented
approximately  64% of net sales in the nine month  period  ended  March 31, 1999
compared to 57.6%,  39.7% and 38.7% of net sales in the fiscal  years that ended
June 30, 1998, 1997 and 1996 respectively.  We expect that  international  sales
will continue to represent a significant portion of our net sales,  particularly
in light of our increased European sales as a result of the Miro Acquisition and
the  addition of the Miro  European  sales  channel.  We make  foreign  currency
denominated sales in many,  primarily  European,  countries.  This exposes us to
risks associated with currency exchange fluctuations. Although the dollar amount
of such foreign  currency  denominated  sales was nominal during fiscal 1997, it
increased  substantially  during fiscal 1998 and 1999,  especially  for sales of
consumer and desktop products into Europe.  In fiscal 1999 and beyond, we expect
that a majority  of our  European  sales will be  denominated  in local  foreign
currency  including the Euro. The Company has developed  natural hedges for some
of this risk in that most of the European  selling expenses are also denominated
in local currency.  In addition to foreign currency risks,  international  sales
and operations may also be subject to the following risks:

         -        Unexpected changes in regulatory requirements

         -        Export license requirements

         -        Restrictions on the export of critical technology

         -        Generally longer receivable  collection periods and difficulty
                  in collecting accounts receivable

         -        Political instability

         -        Trade restrictions

         -        Changes in tariffs

         -        Difficulties in staffing and managing international operations

         -        Potential insolvency of international dealers

         We are also subject to the risks of generally poor economic  conditions
in certain  areas of the world,  most  notably  Asia.  These  risks may harm our
future international sales and, consequently, our business.

                                      -11-

<PAGE>

         Computer software,  components and systems used by or designed by us or
used by third  parties  with whom we  regularly  deal may not be able to process
date/time  information  between the twentieth  and  twenty-first  century.  This
inability  could cause the disruption or failure of such computer  systems.  Our
business  could be  interrupted  materially  as a result of such  disruption  or
failure.

         Like many other companies,  we are potentially  susceptible to the year
2000 problem,  i.e.,  computer systems will not correctly  recognize and process
date information beyond the year 1999. In addition, moving from 1999 to 2000 may
cause  problems  since some  systems'  programming  assigns  special  meaning to
certain dates, such as 9/9/99, and the year 2000 is a leap year.

         We are conducting a program to confront these potential problems.  This
program involves  assessing all areas that may be affected by or responsible for
a year 2000  problem and  initiating  changes  wherever  necessary.  Some of the
activities include:

         -        Assessing  all  major   categories  of  systems  used  by  us,
                  including manufacturing, sales and financial systems

         -        Working  with  key  suppliers  of  products  and  services  to
                  determine  that their  operations  and  products are year 2000
                  capable,  or  to  monitor  their  progress  toward  year  2000
                  capability

         -        Discussing  contingency  planning to address potential problem
                  areas with internal systems and with suppliers and other third
                  parties

         -        Implementing  a  program  to  assess  the  capability  of  our
                  products to handle the year 2000

         It is expected that  assessment,  remediation and contingency  planning
activities  will be  ongoing  throughout  1999  with the  goal of  appropriately
resolving all material internal systems and third party issues. Further, we have
contingency plans, but if these planning  activities fail, our business could be
materially  harmed.  It is  uncertain  to what extent we will be affected by the
year 2000 problem,  and if third parties or suppliers  have year 2000  problems,
our business may be materially harmed.

         To assist  customers  in  evaluating  their year 2000  issues,  we have
assessed the capability of our current and discontinued products.  Products have
been assigned to one of the four following  categories:  "Year 2000  Compliant,"
"Year  2000  Compliant  with  minor  issues"  "Year  2000   non-compliant,"  "No
evaluation  done--will  not test."  "Year 2000  Compliant"  means that when used
properly and in conformity with the product information provided by us, and when
used with "Year 2000 Compliant"  computer  systems,  the product will accurately
store, display,  process,  provide,  and/or receive data from, into, and between
the twentieth and  twenty-first  centuries,  including  leap year  calculations,
provided that all other technology used in combination with our product properly
exchanges date data with our product. Based on our

                                      -12-
<PAGE>

tests, we believe that all current products shipping,  which run under Microsoft
Windows NT or Windows 95, will be "Year 2000  compliant."  Final  results of our
complete product testing will be published by fall 1999.

         The cost which will be incurred by us regarding the  implementation  of
year 2000 compliant internal  information  systems,  testing of current or older
products for year 2000  compliance,  and  answering  and  responding to customer
requests related to year 2000 issues,  including both  incremental  spending and
redeployed  resources,  is currently not expected to exceed $500,000.  The total
cost estimate does not include  potential costs related to any customer or other
claims or the cost of  internal  software  and  hardware  replaced in the normal
course of business. In some instances, the installation schedule of new software
and  hardware  in the normal  course of business  is being  accelerated  to also
afford a solution to year 2000  capability  issues.  The total cost  estimate is
based on the current  assessment  of the projects  and is subject to change.  If
actual cost of year 2000 compliance materially exceeds our current estimate, our
business could be harmed.

                                 USE OF PROCEEDS

         The Company will not receive any  proceeds  from the sale of the shares
by the selling shareholder.

                               SELLING SHAREHOLDER

         Hewlett-Packard  Company, the selling shareholder,  acquired a total of
675,170  shares in connection  with our  acquisition of certain of the assets of
the selling  shareholder  pursuant to an Asset Purchase Agreement dated June 30,
1999. The 773,172 shares held by the selling shareholder represent approximately
3.3% of the  outstanding  common  stock of Pinnacle of the as of August 2, 1999.
All  386,586  of the  shares  offered  hereby  are  being  sold  by the  selling
shareholder.  Upon completion of this offering, the selling shareholder will own
approximately  386,586 of the  outstanding  shares of Common  Stock of Pinnacle,
representing  1.6% of the  outstanding  common stock of Pinnacle as of August 2,
1999.

         Pursuant to the terms of the Stock Restriction and Registration  Rights
Agreement  dated as of August 2, 1999  (the  "Registration  Rights  Agreement"),
between  Pinnacle  and  the  selling  shareholder,  Pinnacle  undertook  to  use
commercially  reasonable  efforts to register  certain of the shares held by the
selling  shareholder  within  five  days of the date of  issuance  of  shares in
connection  with  the  closing  of  the  acquisition.  The  Registration  Rights
Agreement also includes certain  indemnification  arrangements  with the selling
shareholder.

                              PLAN OF DISTRIBUTION

         The shares may be sold from time to time by the selling  shareholder or
by pledgees, donees, transferees or other successors in interest. Such sales may
be made in any one or more transactions  (which may involve block  transactions)
on the Nasdaq  National  Market,  or any  exchange on which the common  stock of
Pinnacle  may then be listed,  in the  over-the-counter  market or  otherwise in
negotiated  transactions  or a  combination  of such methods of sale,  at market
prices  prevailing  at the time of sale,  at prices  related to such  prevailing
market prices or at negotiated prices.  The selling  shareholder may effect such
transactions  by  selling  shares  to  or  through   broker-dealers,   and  such
broker-dealers  may sell the  shares  as agent or may  purchase  such  shares as
principal  and resell  them for their own account  pursuant to this  prospectus.
Such  broker-dealers  may  receive  compensation  in the  form  of  underwriting
discounts,  concessions  or  commissions  from the  selling  shareholder  and/or
purchasers the shares, for whom they may act as agent (which compensation may be
in excess of customary commissions).  In connection with such sales, the selling
shareholder  and any  participating  brokers  or  dealers  may be  deemed  to be
"underwriters" as defined in the Securities Act.

                                      -13-
<PAGE>

         The Registration  Rights Agreement  provides that we will indemnify the
selling shareholder against certain liabilities, including liabilities under the
Securities Act.

         We may  suspend  the use of this  prospectus  for a discrete  period of
time, not exceeding 30 days, if, in the good faith determination of our board of
directors,  a development has occurred or condition  exists as a result of which
the  Registration  Statement  or this  prospectus  contains or  incorporates  by
reference a material  misstatement  or omission,  the  correction of which would
require the premature disclosure of confidential  information that would, in the
good faith  determination  of the board of directors,  materially  and adversely
affect the Company.  We may not exercise  this delay right more than once in any
twelve-month period. We are obligated in the event of such suspension to use our
reasonable  efforts to ensure that the use of the  prospectus  may be resumed as
soon as  practicable.  This offering  will  terminate on the earliest of (a) two
years  from the date of  issuance  of the  shares  or (b) the date on which  all
shares offered hereby have been sold by the selling shareholder or (c) such time
as all of the shares can be sold by the selling shareholder within a three-month
period without  compliance with the registration  requirements of the Securities
Act pursuant to Rule 144 thereunder.

         Any  securities  covered  by this  prospectus  which  qualify  for sale
pursuant to Rule 144 under the Securities Act may be sold under that Rule rather
than pursuant to this Prospectus.

         There can be no assurance that the selling shareholder will sell any or
all of the shares of Pinnacle common stock offered by it hereunder.

                                     EXPERTS

         The consolidated financial statements and schedule of the Company as of
June 30, 1998 and 1997 and for each of the years in the three-year  period ended
June 30, 1998 have been  incorporated by reference  herein, in reliance upon the
reports of KPMG LLP,  independent  auditors,  incorporated by reference and upon
the authority of said firm as experts in accounting and auditing.

                                  LEGAL MATTERS

         The  validity  of the shares of Common  Stock  offered  hereby has been
passed  upon for  Pinnacle  by Wilson  Sonsini  Goodrich & Rosati,  Professional
Corporation, Palo Alto, California.

                                      -14-
<PAGE>

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution

         The following  table sets forth the costs and expenses,  payable by the
Company  in  connection  with the sale of Common  Stock  being  registered.  All
amounts are estimates except the SEC registration fee and Nasdaq National Market
listing fee.

                                                                    Amount to be
                                                                        Paid
                                                                    ------------

SEC registration fee...............................................  $     3,110
Nasdaq National market listing fee.................................       13,503
Printing expenses..................................................       10,000
Legal fees and expenses............................................       25,000
Accounting fees and expenses.......................................        7,500
Miscellaneous expenses.............................................       15,887
                                                                     -----------
     Total.........................................................  $    75,000
                                                                     ===========

Item 15. Indemnification of Directors and Officers

         As permitted by Section  204(a) of the California  General  Corporation
Law, the Registrant's Articles of Incorporation  eliminate a director's personal
liability for monetary  damages to the Registrant and its  shareholders  arising
from a breach or alleged breach of the  director's  fiduciary  duty,  except for
liability  arising  under  Sections  310  and  316  of  the  California  General
Corporation Law or liability for (i) acts or omissions that involve  intentional
misconduct or knowing and culpable violation of law, (ii) acts or omissions that
a director  believes to be contrary to the best  interests of the  Registrant or
its  shareholders  or that  involve the absence of good faith on the part of the
director,  (iii) any  transaction  from  which a director  derived  an  improper
personal benefit,  (iv) acts or omissions that show a reckless disregard for the
director's duty to the Registrant or its  shareholders in circumstances in which
the director  was aware,  or should have been aware,  in the ordinary  course of
performing a director's duties, of a risk of serious injury to the Registrant or
its shareholders,  (v) acts or omissions that constitute an unexcused pattern of
inattention  that  amounts  to an  abdication  of  the  director's  duty  to the
Registrant  or  its  shareholders,  (vi)  interested  transactions  between  the
corporation  and a  director  in  which  a  director  has a  material  financial
interest, and (vii) liability for improper  distributions,  loans or guarantees.
This  provision  does  not  eliminate  the  directors'  duty  of  care,  and  in
appropriate  circumstances  equitable  remedies  such as an  injunction or other
forms of non-monetary relief would remain available under California law.

         Sections  204(a)  and 317 of the  California  General  Corporation  Law
authorize a corporation  to indemnify  its  directors,  officers,  employees and
other agents in terms  sufficiently broad to permit  indemnification  (including
reimbursement for expenses) under certain  circumstances for liabilities arising
under the Securities Act. The Registrant's  Articles of Incorporation and Bylaws
contain provisions  covering  indemnification to the maximum extent permitted by
the California  General  Corporation  Law of corporate  directors,  officers and
other agents against certain  liabilities  and expenses  incurred as a result of
proceedings  involving such persons in their  capacities as directors,  officers
employees  or agents,  including  proceedings  under the  Securities  Act or the
Securities  Exchange Act of 1934.  The Company has entered into  Indemnification
Agreements with its directors and executive officers.

         The  Registration  Rights  Agreement  provides  that the  Company  will
indemnify  the  Selling   Shareholder   identified   therein   against   certain
liabilities, including liabilities under the Securities Act.

                                      II-1
<PAGE>

         At present,  there is no pending  litigation or proceeding  involving a
director,   officer,  employee  or  other  agent  of  the  Registrant  in  which
indemnification  is being sought,  nor is the Registrant aware of any threatened
litigation  that may  result in a claim  for  indemnification  by any  director,
officer, employee or other agent of the Registrant.

Item 16. Exhibits

Exhibit No.     Description
- -----------     -----------
     4.1       Stock Restriction and Registration  Rights Agreement dated August
               2,  1999  by  and  between  the  Registrant  and  Hewlett-Packard
               Company.

     5.1       Opinion  of  Wilson  Sonsini  Goodrich  &  Rosati,   Professional
               Corporation.

    23.1       Consent of KPMG LLP, independent auditors.

    23.2       Consent of Counsel (included in Exhibit 5.1).

    24.1*      Power of Attorney.

* Previously filed.

Item 17. Undertakings

         The Registrant hereby undertakes:

         1. To file,  during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement:

                  (a) To include any prospectus  required by Section 10(a)(3) of
the Securities Act;

                  (b) To reflect in the  prospectus  any facts or events arising
after the  effective  date of the  Registration  Statement  (or the most  recent
post-effective  amendment  thereof)  which,  individually  or in the  aggregate,
represent a fundamental  change in the information set forth in the Registration
Statement;

                  (c) To include any  material  information  with respect to the
plan of distribution not previously  disclosed in the Registration  Statement or
any material change to such information in the Registration Statement; provided,
however,  that  paragraphs  (a) and (b)  above do not  apply if the  information
required to be included in a  post-effective  amendment by those  paragraphs  is
contained  in periodic  reports  filed by the Company  pursuant to Section 13 or
Section 15(d) of the Securities  Exchange Act of 1934, as amended (the "Exchange
Act") that are incorporated by reference in the Registration Statement.

         2.  That,  for the  purpose  of  determining  any  liability  under the
Securities Act, each such  post-effective  amendment shall be deemed to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

         3. To remove from  registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         The undersigned  registrant  hereby undertakes that, for the purpose of
determining  any liability  under the Securities  Act of 1933, as amended,  each
filing of the  Registrant's  annual report  pursuant to Section 13(a) or Section
15(d) of the Exchange Act, (and,  where  applicable,  each filing of an employee
benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that
is incorporated by reference in the Registration Statement shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

                                      II-2
<PAGE>

         Insofar as indemnification for liabilities arising under the Securities
Act may be  permitted to  directors,  officers  and  controlling  persons of the
Registrant pursuant to the foregoing  provisions,  or otherwise,  the Registrant
has been advised that in the opinion of the SEC such  indemnification is against
public  policy  as  expressed  in  the   Securities   Act  and  is,   therefore,
unenforceable.  In the  event  that a claim  for  indemnification  against  such
liabilities  (other than the payment by the  Registrant of expenses  incurred or
paid by a  director,  officer or  controlling  person of the  Registrant  in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as  expressed  in the  Securities  Act and will be  governed by the final
adjudication of such issue.

                                      II-3
<PAGE>

                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the  requirements  for  filing  on  Form  S-3 and has  duly  caused  this
Amendment  No. 1 to its  Registration  Statement on Form S-3 to be signed on its
behalf by the undersigned,  thereunto duly  authorized,  in the City of Mountain
View, State of California, on the 17th day of August, 1999.


                                       PINNACLE SYSTEMS, INC.



                                       By: /S/  MARK L. SANDERS
                                           --------------------------------
                                           Mark L. Sanders
                                           President and Chief Executive Officer

                                      II-4
<PAGE>



<TABLE>
         Pursuant to the requirements of the Securities Act of 1933, as amended,
this  Registration  Statement  has been signed by the  following  persons in the
capacities and on the dates indicated:

<CAPTION>
Signature                          Title                                                  Date
- ---------                          -----                                                  ----
<S>                                <C>                                                    <C>
/s/ MARK L. SANDERS                President, Chief Executive Officer and Director        August 17, 1999
- ---------------------------        (Principal Executive Officer)
Mark L. Sanders

/s/ ARTHUR D. CHADWICK*            Vice President, Finance and Administration and         August 17, 1999
- ---------------------------        Chief Financial Officer (Principal Financial and
Arthur D. Chadwick                 Accounting Officer)

                                   Chairman of the Board, Vice President, Desktop
- ---------------------------        Products
Ajay Chopra

/s/ JOHN LEWIS*                    Director                                               August 17, 1999
- ---------------------------
John Lewis

/s/ CHARLES J. VAUGHNAN*           Director                                               August 17, 1999
- ---------------------------
Charles J. Vaughan

                                   Director
- ---------------------------
Nyal D. McMullin

/s/ GLENN E. PENISTEN*             Director                                               August 17, 1999
- ---------------------------
Glenn E. Penisten

/s/ L. GREGORY BALLARD*            Director                                               August 17, 1999
- ---------------------------
L. Gregory Ballard

/s/ L. WILLIAM KRAUSE*             Director                                               August 17, 1999
- ---------------------------
L. William Krause


By:  /s/ Mark L. Sanders
     ----------------------
     Mark L. Sanders,
     Attorney-in-fact
</TABLE>

                                      II-5
<PAGE>

                                  EXHIBIT INDEX

Exhibit No.     Description
- -----------     -----------

     4.1       Stock Restriction and Registration  Rights Agreement dated August
               2,  1999  by  and  between  the  Registrant  and  Hewlett-Packard
               Company.

     5.1       Opinion  of  Wilson  Sonsini  Goodrich  &  Rosati,   Professional
               Corporation.

     23.1      Consent of KPMG LLP, independent auditors.

     23.2      Consent of Counsel (included in Exhibit 5.1).

     24.1*     Power of Attorney.

- --------
* Previously filed.


                                      II-6



                             STOCK RESTRICTION AND
                         REGISTRATION RIGHTS AGREEMENT

         THIS  STOCK   RESTRICTION  AND  REGISTRATION   RIGHTS  AGREEMENT  (this
"Agreement")  is made  effective  as of August 2, 1999 by and  between  PINNACLE
SYSTEMS,  INC., a California  corporation (the "Company"),  and  HEWLETT-PACKARD
COMPANY, a Delaware corporation ("HP").


                                    RECITALS

         A.       Pursuant to the terms of the Asset  Purchase  Agreement  dated
                  June 30, 1999 (the "Purchase  Agreement"),  by and between the
                  Company and HP, HP shall  acquire from the Company Six Hundred
                  Seventy-Five Thousand One Hundred Seventy (675,170) fully paid
                  and  nonassessable  shares  (the  "Pinnacle  Shares")  of  the
                  Company's  Common Stock,  no par value (the "Common Stock") as
                  partial payment of the Purchase Price (as such term is defined
                  in the Purchase  Agreement) for the sale of certain assets and
                  the transfer of certain liabilities of HP to the Company.

         B.       The transactions contemplated by the Purchase Agreement are to
                  be consummated at the "Closing  Date", as such term is defined
                  in the Purchase Agreement.

         C.       In connection with the Asset Purchase  Agreement,  the Company
                  has agreed to  provide  the  registration  rights set forth in
                  this Agreement with respect to one-half of the Pinnacle Shares
                  issued  to  HP  at  the  Closing  Date  and  one-half  of  any
                  additional shares of Common Stock issued to HP on a later date
                  in accordance  with Section  3.1(c) of the Purchase  Agreement
                  and HP has agreed to certain  restrictions with respect to the
                  disposition of the remainder of such shares.  NOW,  THEREFORE,
                  in consideration of the representations, warranties, covenants
                  and  conditions  herein  and in the  Purchase  Agreement,  the
                  parties hereto hereby agree as follows:


                                   SECTION 1

                                  DEFINITIONS

         1.1 Certain Definitions. As used in this Agreement:

                  (a) The term  "beneficially  owned"  refers to the  meaning of
such terms as provided in Rule 13d-3 promulgated under the Exchange Act.

                  (b) The term  "Company  Public Sale Event" shall mean any sale
by the Company of Common  Stock for its own account as  contemplated  by Section
3.2 pursuant to an effective  Registration Statement filed by the Company, filed
on Form S-1 or any other form for the general



<PAGE>


registration  of  securities  with the  Commission  (other  than a  Registration
Statement  filed  by  the  Company  on  either  Form  S-4  or  Form  S-8  or any
registration  in connection  with a standby  underwriting in connection with the
redemption of outstanding convertible securities).

                  (c) The term  "Company  Sale  Notice"  shall  mean a Notice of
Offering pursuant to Subsection 3.1 from the Company to each Holder stating that
the Company proposes to effect a Company Public Sale Event.

                  (d) The term "Exchange Act" means the Securities  Exchange Act
of  1934,  as  amended,  or any  similar  federal  statute  and  the  rules  and
regulations of the SEC thereunder,  all as the same shall be in effect from time
to time.

                  (e) The  term  "person"  shall  mean any  person,  individual,
corporation,  partnership,  limited  liability  company,  joint  stock  company,
unincorporated association, joint venture, trust or other nongovernmental entity
or any governmental  agency,  court,  authority or other body (whether  foreign,
federal, state, local or otherwise).

                  (f)  The  term  "Holder"   means  HP  and  any  transferee  of
Registrable Securities pursuant to Section 3.9 of this Agreement,  provided that
any such person shall cease to be a Holder on the Termination Date.

                  (g)  The  term   "Preliminary   Prospectus"  shall  mean  each
preliminary  prospectus included in a Registration Statement or in any amendment
thereto  prior to the date on which  such  Registration  Statement  is  declared
effective under the Securities Act,  including any prospectus filed with the SEC
pursuant to Rule 424(a) under the Securities Act.

                  (h) The term "Prospectus" shall mean each prospectus  included
in a Registration  Statement (including,  without limitation,  a prospectus that
discloses  information  previously omitted from a prospectus filed as part of an
effective  Registration  Statement in accordance with Rule 430A),  together with
any supplement  thereto,  and any material  incorporated  by reference into such
Prospectus, all as filed with, or transmitted for filing to, the SEC pursuant to
Rule 424(b) under the Securities Act.

                  (i) The  terms  "register,"  "registered"  and  "registration"
refer  to a  registration  effected  by  preparing  and  filing  a  registration
statement in compliance with the Securities Act, and the declaration or ordering
by the SEC of the effectiveness of such registration statement.

                  (j) The term  "Registration  Expenses"  shall have the meaning
contained in Section 3.2 hereof.

                  (k) The term  "Registrable  Securities" shall refer to 337,585
of the Pinnacle Shares, representing of the total number of shares issued on the
Closing Date in connection  with Purchase  Agreement,  (ii) 1/2 of any shares of
Common Stock issued to HP pursuant to Section 3.1(c) of the Purchase  Agreement,
and (iii) any Common Stock of the Company issued by the Company to HP in respect
of the  shares  identified  in clause  (i) or (ii) upon any stock  split,  stock
dividend,

                                      -2-

<PAGE>


recapitalization,  or similar event; provided, that if, upon any stock dividend,
recapitalization  or similar event, the Company issues  securities which are not
immediately  convertible  into Common Stock, the term  "Registrable  Securities"
shall also include such securities.

                  (l)  The  term   "Registration   Statement"   shall  mean  any
registration  statement (including the Preliminary  Prospectus,  the Prospectus,
any  amendments   (including  any  post-effective   amendments)   thereof,   any
supplements and all exhibits thereto and any documents  incorporated  therein by
reference  pursuant  to the rules  and  regulations  of the  SEC),  filed by the
Company  with  the SEC  under  the  Securities  Act in  connection  with the SEC
provisions of Section 3.

                  (m) The term "Restricted Securities" shall mean the securities
of the Company required to bear the legend set forth in Section 2.2 hereof.

                  (n) The term  "Securities  Act"  means the  Securities  Act of
1933, as amended,  or any similar  federal statute and the rules and regulations
of the SEC thereunder, all as the same shall be in effect at the time.

                  (o)  The  term  "SEC"  means  the   Securities   and  Exchange
Commission or any other federal agency at the time  administering the Securities
Act.

                  (p) The term  "Termination  Date" means shall mean the earlier
of the respective dates on which the Company has no further obligation under the
terms  of  this  Agreement  to file or keep  effective  the  Shelf  Registration
Statement under Subsection 3.1(b).

                  (q) The  term  "Unregistered  Shares"  shall  mean  all of the
shares of common stock issued to HP in connection with the Acquisition  that are
not Registrable Securities.

         1.2 Definitions Generally.  Capitalized terms used herein but otherwise
not defined  herein  shall have the  meanings  ascribed to them in the  Purchase
Agreement.


                                   SECTION 2

                        RESTRICTIONS ON TRANSFERABILITY;
                         COMPLIANCE WITH SECURITIES ACT

         2.1 Restrictions on Transferability. HP agrees that the Pinnacle Shares
shall not be sold,  assigned,  transferred  or  pledged  unless  (i) such  sale,
transfer or other  disposition  is within the  limitations  of and in compliance
with Rule 144  promulgated  by the SEC under the Securities Act and HP furnishes
Pinnacle with reasonable proof of compliance with such Rule, (ii) in the opinion
of counsel to the transferring shareholder,  reasonably satisfactory to Pinnacle
and its counsel, some other exemption from registration under the Securities Act
is  available  with  respect  to any  such  proposed  sale,  transfer,  or other
disposition  of  Pinnacle  Shares,  or (iii) the offer and sale of the  Pinnacle
Shares is registered  under the  Securities  Act or (iv) such sale,  transfer or
other  disposition  is otherwise in compliance  with the  Securities Act and the
rules  and  regulations  thereunder.  HP  will

                                      -3-

<PAGE>


cause any proposed purchaser,  assignee,  transferee, or pledgee of the Pinnacle
Shares  held by HP to  agree to take and hold  such  securities  subject  to the
provisions and upon the conditions specified in this Section 2.

         2.2 Restrictive Legends.

                  (a)  Each   certificate   representing  the  Pinnacle  Shares,
including  any new  certificates  issued upon any stock split,  stock  dividend,
recapitalization,   merger,   consolidation  or  similar  event,  shall  (unless
otherwise  permitted  by the  provisions  of  Section  2.3  below) be stamped or
otherwise  imprinted  with a legend in the  following  form (in  addition to any
legend required under applicable state securities laws):

                  THE SHARES  REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED
                  FOR  INVESTMENT  AND NOT FOR  DISTRIBUTION,  AND HAVE NOT BEEN
                  REGISTERED  UNDER THE  SECURITIES ACT OF 1933, AS AMENDED (THE
                  "ACT"). SUCH SHARES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED
                  OR HYPOTHECATED (1) IN THE ABSENCE OF A REGISTRATION STATEMENT
                  IN EFFECT WITH RESPECT  THERETO  UNDER THE ACT (2) UNLESS SOLD
                  PURSUANT TO RULE 144 OF THE ACT, (3) IN THE OPINION OF COUNSEL
                  TO THE  TRANSFERRING  SHAREHOLDER  (WHICH SHALL BE  REASONABLY
                  SATISFACTORY   TO  THE  ISSUER)  SOME  OTHER   EXEMPTION  FROM
                  REGISTRATION UNDER THE ACT IS AVAILABLE OR (4) UNLESS THE SALE
                  IS OTHERWISE EXEMPT FROM REGISTRATION UNDER THE ACT.

         Each holder of a certificate  evidencing the  Restricted  Securities as
set forth in this Section  2.2(a)  consents to the Company  making a notation on
its records and giving instructions to any transfer agent of the Common Stock in
order to implement the restrictions on transfer established in this Section 2.

                  (b) Each certificate  representing  the  Unregistered  Shares,
including  any new  certificates  issued upon any stock split,  stock  dividend,
recapitalization,   merger,   consolidation  or  similar  event,  shall  (unless
otherwise  permitted  by the  provisions  of  Section  2.3  below) be stamped or
otherwise imprinted with an additional legend in the following form (in addition
to any legend required under applicable state securities laws):

                  THE SHARES  REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE
                  TERMS  OF THAT  CERTAIN  STOCK  RESTRICTION  AND  REGISTRATION
                  RIGHTS  AGREEMENT  DATED  AUGUST  2, 1999 AND MAY NOT BE SOLD,
                  OFFERED FOR SALE, PLEDGED OR HYPOTHECATED UNTIL AUGUST 2, 2001
                  EXCEPT IN ACCORDANCE WITH THE TERMS OF SUCH AGREEMENT.

         Each holder of a certificate  evidencing the Unregistered Shares as set
forth in this section  2.2(b)  consents to the Company  making a notation on its
records and giving  instructions  to

                                      -4-

<PAGE>


any transfer  agent of the  Company's  Common  Stock in order to  implement  the
restrictions on transfer established in this Section 2.

         2.3  Notice of  Proposed  Transfers.  The  holder  of each  certificate
representing Restricted Securities by acceptance thereof agrees to comply in all
respects with the  provisions of this Section 2.3.  Prior to any proposed  sale,
assignment,  transfer  or  pledge of any  Restricted  Securities  (other  than a
transfer not  involving a change in beneficial  ownership),  and, in the case of
Unregistered Shares, for a period of two years after the Closing Date, unless in
either case there is in effect a registration statement under the Securities Act
covering the proposed transfer,  the holder thereof shall give written notice to
the Company of such holder's intention to effect such transfer, sale, assignment
or pledge.  Each such notice shall describe the manner and  circumstances of the
proposed transfer, sale, assignment or pledge in sufficient detail, and shall be
accompanied, at such holder's expense by evidence of satisfaction of Section 2.1
hereof,  and, as applicable  such  documentation  or opinions as necessary under
Section  2.1,  whereupon  the  holder  of such  Restricted  Securities  shall be
entitled to transfer such Restricted  Securities in accordance with the terms of
the notice delivered by the holder to the Company.  Each certificate  evidencing
the Restricted  Securities  transferred as above provided shall bear,  except if
such transfer is made pursuant to Rule 144, the appropriate  restrictive  legend
set forth in Section 2.2 above, except that such certificate shall not bear such
restrictive  legend if in the opinion of counsel for such holder and the Company
such legend is not required in order to establish  compliance with any provision
of the Securities Act.


                                   SECTION 3

                              REGISTRATION RIGHTS

         3.1 Shelf Registration.

                  (a) Form S-3  Registration.  As promptly as practicable and in
any event within 5 days after the issuance of the Pinnacle  Shares in connection
with the  Closing  under  the  Purchase  Agreement,  the  Company  shall  file a
registration  statement on Form S-3 under the Securities Act covering the resale
of the Registrable  Securities by the Holders  thereof.  Within 5 days after the
issuance of any shares of Common  Stock to HP pursuant to Section  3.1(c) of the
Purchase  Agreement,  Pinnacle  shall  amend  such  Form  S-3 to  cover  of such
additional  shares of Common Stock as  necessary so that all of the  Registrable
Securities  are  covered  by such Form S-3.  Nothing  herein  shall be deemed to
provide any registration rights with respect to the Unregistered Shares.

                  (b)  Obligations  of  the  Company.  In  connection  with  any
registration of Registrable Securities pursuant to this Section 3.1, the Company
shall  use its best  efforts  to cause  such  registration  statement  to become
effective as soon as practicable  thereafter and to remain  effective  until the
earlier of (A) the second  anniversary  of the date of issuance of the  Pinnacle
Shares,  (B)  the  sale of all of  such  shares  of  Registrable  Securities  so
registered  or (C)  ninety  days  after  the  date  as  all  of the  Registrable
Securities can be sold by Holders within a three-month period without compliance
with  the  volume  requirements  of the  Securities  Act  pursuant  to Rule  144
thereunder.

                                      -5-

<PAGE>


         3.2 Company Sale Events.

                  (a)  Determination.  Subject to Section 3.5(b) the Company may
at any time  effect a Company  Public  Sale  Event  pursuant  to a  Registration
Statement  filed by the Company if the Company  gives each Holder a Company Sale
Notice,  provided  that such  Company Sale Notice is given not less than 21 days
prior  to  the  initial  filing  of  the  related  Registration  Statement.  The
obligation  of the Company to give to each  Holder a Company  Sale Notice and to
permit  piggyback  registration  rights to Holders with  respect to  Registrable
Securities  in  connection  with  Company  Sale Events in  accordance  with this
Section 3.2 shall terminate in accordance with Section 3.11.

                  (b) Notice.  The Company  Sale Notice  shall offer the Holders
the opportunity to participate in such offering and include the number of shares
of  Registrable  Securities  which  represents  the  best  estimate  of the lead
managing underwriter (or, if not known or applicable,  the Company) that will be
available for sale by the Holders in the proposed offering.

                  (c) Piggyback Rights of Holders. (A) If the Company shall have
delivered a Company Sale Notice, Holders shall be entitled to participate on the
same terms and  conditions  as the Company in the  Company  Public Sale Event to
which  such  Company  Sale  Notice  relates  and to  offer  and sell  shares  of
Registrable  Securities  therein  only to the extent  provided  in this  Section
3.2(a).  Each Holder  desiring to  participate in such offering shall notify the
Company no later than ten (10) days  following  receipt of a Company Sale Notice
of the aggregate  number of shares of  Registrable  Securities  that such Holder
then desires to sell in the offering. (B) Each Holder desiring to participate in
a Company Public Sale Event may include shares of Registrable  Securities in any
Registration  Statement  relating  to a Company  Public Sale Event to the extent
that the  inclusion  of such  shares  shall not  reduce  the number of shares of
Common  Stock to be offered and sold by the Company to be included  therein.  If
the lead managing  underwriter selected by the Company for a Company Public Sale
Event  advises the Company in writing  that the total number of shares of Common
Stock  to be sold  by the  Company  together  with  the  shares  of  Registrable
Securities  which  such  Holders  intend to include  in such  offering  would be
reasonably  likely to adversely  affect the price or  distribution of the Common
Stock  offered in such  Company  Public Sale Event or the timing  thereof,  then
there  shall  be  included  in the  offering  only  that  number  of  shares  of
Registrable  Securities,  if any, that such lead managing underwriter reasonably
and in good faith  believes will not  jeopardize  the marketing of the offering;
provided  that if the lead  managing  underwriter  determines  that such factors
require a limitation  on the number of shares of  Registrable  Securities  to be
offered and sold as aforesaid and so notifies the Company in writing, the number
of shares of Registrable  Securities to be offered and sold by Holders  desiring
to participate in the Company Public Sale Event,  shall be allocated among those
Holders  desiring to participate in such Company Public Sale Event on a pro rata
basis based on their holdings of Registrable Securities.  If any Holder does not
request  inclusion  of the maximum  number of shares of  Registrable  Securities
allocated to it pursuant to the above-described procedure, the remaining portion
of its allocation  shall be  reallocated  among those  requesting  Holders whose
allocation did not satisfy their requests pro rata on the basis of the number of
shares of Registrable  Securities held by such Holders, and this procedure shall
be  repeated  until all of the  shares of  Registrable  Securities  which may be
included in the underwriting have been so allocated.

                                      -6-

<PAGE>


                  (d) Discretion of the Company.  In connection with any Company
Public Sale Event, subject to the provisions of this Agreement,  the Company, in
its sole discretion,  shall determine whether (a) to proceed with, withdraw from
or  terminate  such  Company  Public  Sale  Event,  (b) to enter into a purchase
agreement or underwriting  agreement for such Company Public Sale Event, and (c)
to take such  actions  as may be  necessary  to close  the sale of Common  Stock
contemplated  by such  offering,  including,  without  limitation,  waiving  any
conditions to closing such sale which have not been fulfilled.

                  (e)  Market-Standoff  Agreement.  In connection with a Company
Public Sale Event,  securities  in  connection  with an  effective  registration
statement under the Securities Act, each Holder agrees,  upon the request of the
Company or the underwriters  managing any underwritten offering of the Company's
securities,  not to sell, make any short sale of, loan, grant any option for the
purchase of, or otherwise  dispose of any  securities of the Company (other than
those  included in the  registration)  without the prior written  consent of the
Company or such underwriters,  as the case may be, for such period of time after
the   effectiveness  of  the   registration   statement  as  specified  by  such
underwriters,  not to exceed one hundred  eighty (180) days;  provided  that all
officers,  directors  and 5%  stockholders  of the Company are bound by and have
entered  into  similar  agreements.  Each  Holder  agrees  that the  Company may
instruct its transfer agent to place  stop-transfer  notations in its records to
enforce the provisions of this Section 3.2(e).

         3.3  Agreements  Concerning   Offerings.   Subject  to  the  terms  and
conditions  hereof, in connection with any Registration  Statement,  the Company
will:

                  (a)  Prepare  and  file  with  the  SEC  such  amendments  and
supplements to such registration statement and the prospectus (the "Prospectus")
used in  connection  therewith  as may be  necessary  to make  and to keep  such
registration  statement  effective  and to  comply  with the  provisions  of the
Securities  Act with respect to the sale or other  disposition of all securities
proposed to be registered in such registration statement.

                  (b) Furnish to the  participating  Holders or the underwriters
such number of copies of any Prospectus  (including any  preliminary  Prospectus
and any amended or supplemented Prospectus), in conformity with the requirements
of the Securities Act, as the Holders may reasonably  request in order to effect
the offering and sale of the shares of Registrable  Securities to be offered and
sold, but only while the Company shall be required  under the provisions  hereof
to cause the registration statement to remain current.

                  (c) Provide to any Holder  requesting  to include  Registrable
Securities  in  such  Registration  Statement  and any  managing  underwriter(s)
participating  in any  distribution  thereof and to any attorney,  accountant or
other  agent  retained by such  Holder or  managing  underwriter(s),  reasonable
access to  appropriate  officers and directors of the Company,  its  independent
auditors and counsel to ask questions and to obtain  information  (including any
financial  and other  records  and  pertinent  corporate  documents)  reasonably
requested by any such Holder, managing underwriter(s),  attorney,  accountant or
other agent in  connection  with such  Registration  Statement or any  amendment
thereto,  provided,  however,  that (i) in  connection  with any such  access or
request, any

                                      -7-

<PAGE>


such requesting persons shall cooperate to the extent reasonably  practicable to
minimize any disruption to the operation by the Company of its business and (ii)
any  records,  information  or  documents  shall  be kept  confidential  by such
requesting persons, unless (i) such records, information or documents are in the
public  domain  or  otherwise  publicly  available  or (ii)  disclosure  of such
records,  information or documents is required by court or administrative  order
or by applicable law (including, without limitation, the Securities Act).

                  (d) Use its best  efforts to register or qualify the shares of
Registrable   Securities  covered  by  such  registration  statement  under  the
securities  or Blue Sky laws of such states as the  participating  Holders shall
reasonably  request,  maintain any such  registration or  qualification  current
until the earlier of (A) the second  anniversary of the date of this  Agreement,
(B) the sale of all the shares of  Registrable  Securities  so registered or (C)
such time as all of the  Registrable  Securities can be sold by Holders within a
three-month period without compliance with the registration  requirements of the
Securities  Act pursuant to Rule 144  thereunder;  provided,  however,  that the
Company  shall not be required  to take any action that would  subject it to the
general  jurisdiction  of the courts of any  jurisdiction  in which it is not so
subject or to qualify as a foreign  corporation  in any  jurisdiction  where the
Company is not so qualified.

                  (e) Take all such other action  either  necessary or desirable
to permit  the  shares  of  Registrable  Securities  held by the  Holders  to be
registered  and  disposed  of in  accordance  with  the  method  of  disposition
described herein.

                  (f)  Enter  into  and   perform  its   obligations   under  an
underwriting   agreement,  in  usual  and  customary  form,  with  the  managing
underwriter of such offering.  Each participating  Holder  participating in such
underwriting  shall also enter into and perform its  obligations  under any such
agreement.

                  (g) Cause all Registrable  Securities  registered  pursuant to
this Section  3.13(g) to be listed on The Nasdaq  National  Market or such other
exchange as the Company's Common Stock is then listed or quoted.

                  (h) Provide for or  designate a transfer  agent and  registrar
(which may be the same  entity) for the  Registrable  Securities  covered by the
Registration  Statement from and after the effective  date of such  Registration
Statement.

                  (i)  Cooperate   with  the  selling   Holders  of  Registrable
Securities and any managing  underwriters  to facilitate the timely issuance and
delivery to any underwriters to which any Holder may sell Registrable Securities
in such offering  certificates  evidencing shares of the Registrable  Securities
not bearing any restrictive  legends and in such denominations and registered in
such names as the managing underwriters may request.

                  (j)  The  Company  will  keep  the  Holders  informed  of  the
Company's  best  estimate  of the  earliest  date  on  which  such  Registration
Statement or any post-effective amendment thereto will become effective and will
notify each Holder,  Holders' Counsel and the managing  underwriter(s),  if any,
participating in the distribution pursuant to such Registration Statement

                                      -8-

<PAGE>


promptly (i) when such Registration Statement or any post-effective amendment to
such Registration  Statement is filed or becomes effective,  (ii) of any request
by the  Commission  for an  amendment  or any  supplement  to such  Registration
Statement or any related  Prospectus,  or any other  information  request by any
other  governmental  agency  directly  relating to the  offering,  and  promptly
deliver  to  each  Holder   participating  in  the  offering  and  the  managing
underwriter(s),  if any, copies of all correspondence  between the Commission or
any such governmental  agency or self-regulatory  body and all written memoranda
relating to  discussions  with the  Commission  or its staff with respect to the
Registration  Statement or proposed sale of shares, to the extent not covered by
attorney-client  privilege or constituting  attorney work product,  (iii) of the
issuance by the  Commission of any stop order  suspending the  effectiveness  of
such Registration  Statement or of any order preventing or suspending the use of
any related  Prospectus or the  initiation or threat of any  proceeding for that
purpose,  (iv) of the  suspension of the  qualification  of any shares of Common
Stock included in such  Registration  Statement for sale in any  jurisdiction or
the  initiation  or  threat  of a  proceeding  for  that  purpose,  (v)  of  any
determination by the Company that an event has occurred (the nature and pendency
of which need not be disclosed  during a "black-out  period" pursuant to Section
3.5(a))  which  makes  untrue  any  statement  of a  material  fact made in such
Registration Statement or any related Prospectus or which requires the making of
a change in such Registration  Statement or any related Prospectus in order that
the same will not contain  any untrue  statement  of a material  fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein,  in light of the circumstances  under which they were made,
not misleading,  and (vi) of the completion of the distribution  contemplated by
such Registration Statement if it relates to a Company Sale Event.

                  (k) In the event of the issuance of any stop order  suspending
the effectiveness of such  Registration  Statement or of any order suspending or
preventing the use of any related  Prospectus or suspending the qualification of
any shares of Common Stock included in such  Registration  Statement for sale in
any  jurisdiction,  the  Company  will  obtain its  withdrawal  at the  earliest
possible time.

         3.4 Expenses.

                  (a)  All  expenses,  other  than  discounts  and  commissions,
incurred in connection  with any  registration  pursuant to Sections 3.1 and 3.2
shall be borne by the Company.  The costs and expenses of any such  registration
shall  include,  without  limitation,  the  reasonable  fees and expenses of the
Company's  counsel and its accountants,  the reasonable fees and expenses of one
counsel for the Holders and all other costs and expenses of the Company incident
to  the  preparation,  printing  and  filing  under  the  Securities  Act of the
registration  statement and all amendments and supplements  thereto and the cost
of furnishing copies of each preliminary  prospectus,  each final prospectus and
each  amendment  or  supplement  thereto  to  underwriters,  dealers  and  other
purchasers of the securities so registered,  the costs and expenses  incurred in
connection with the  qualification  of such  securities so registered  under the
"blue sky" laws of various jurisdictions, the fees and expenses of the Company's
transfer agent and all other costs and expenses of complying with the provisions
of this Section 3 with respect to such registration (collectively, "Registration
Expenses").

                                      -9-

<PAGE>


                  (b) Excluding the  Registration  Expenses,  the  participating
Holders  shall pay all other  expenses  incurred on their behalf with respect to
any registration  pursuant to Sections 3.1 and 3.2 including any counsel for the
participating Holders (other than counsel as provided in Section 3.4(a)) and all
underwriting  discounts and selling  commissions with respect to the Registrable
Securities sold by them pursuant to such registration statement.

         3.5 Blackout Periods.

                  (a)  Black-Out  Periods for Holders.  No Holder shall offer to
sell  or sell  any  shares  of  Registrable  Securities  pursuant  to the  Shelf
Registration  Statement,  and the Company shall not be required to supplement or
amend any Registration Statement or otherwise facilitate the sale of Registrable
Securities pursuant thereto,  during the 30-day period (or such lesser number of
days until the Company  makes its next  required  filing under the Exchange Act)
immediately  following  the  receipt  by  each  Holder  of a  certificate  of an
authorized  officer of the Company to the effect that the Board of  Directors of
the Company has  determined in good faith that such offer,  sale,  supplement or
amendment is likely to require the disclosure of confidential  information  that
would materially and adversely affect the Company.  The Company may not exercise
this  postponement  right more than once in any twelve  (12) month  period.  Any
period  described in Section  3.5(a)  during which  Holders are not able to sell
shares of Registrable Securities pursuant to the Shelf Registration Statement is
herein referred to as a "black-out" period. The Company shall notify each Holder
of the expiration or earlier  termination of any "black-out"  period (the nature
and pendency of which need not be disclosed during such "black-out" period).

                  (b) The period  during which the Company is required  pursuant
to  Subsection  3.1  to  keep  the  Shelf  Registration  Statement  continuously
effective  shall be extended by a number of days equal to the number of days, if
any, of any "black-out"  period  applicable to Holders  pursuant to this Section
3.5 occurring  during such period,  plus a number of days equal to the number of
days during such  period,  if any,  of any period  during  which the Holders are
unable  to sell any  shares  of  Registrable  Securities  pursuant  to the Shelf
Registration  Statement as a result of the  happening of any event of the nature
described in Sections 3.7(b)(ii), 3.7(b)(iii) or 3.7(b)(v).

         3.6  Black-Out  Period for the  Company.  Except for offers to sell and
sales of Common  Stock  pursuant to a  Registration  Statement on Form S-8 or on
Form S-4, standby underwritings in connection with the redemption of outstanding
convertible securities,  the conversion of outstanding convertible securities or
in  connection  with the  acquisition  by the  Company  of  another  company  or
business,  the Company  shall not  publicly  offer to sell or sell any shares of
capital stock of the Company during the 60-day period immediately  following the
initial  sale of shares by any  Holder in an  underwritten  public  offering  of
shares in connection with a Company Sale Event.

         3.7 Indemnification and Contribution.

                  (a) To the extent  permitted  by law,  the  Company  agrees to
indemnify and hold  harmless  each Holder and each person,  if any, who controls
such Holder within the meaning of Section 15 of the Securities Act or Section 20
of the  Exchange  Act,  and each of their  respective  officers,  directors  and
employees  against any losses,  claims,  damages or  liabilities,  or actions in

                                      -10-

<PAGE>


respect  thereof to which such  Holder or persons may become  subject  under the
Securities Act, or otherwise  (collectively,  "Losses"),  insofar as such Losses
arise out of,  or are  based  upon,  any  untrue  statement  or  alleged  untrue
statement of any material fact contained in Registration Statement,  any related
Preliminary Prospectus or any related Prospectus, or any amendment or supplement
thereto,  or arise out of, or are based upon the omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements therein not misleading, and will reimburse such Holder or persons
for any legal or other expenses  reasonably  incurred by them in connection with
investigating or defending any such Losses; provided,  however, that the Company
shall not be so liable to the extent that any such  Losses  arise out of, or are
based upon, an untrue  statement or alleged untrue  statement of a material fact
or an omission or alleged omission to state a material fact in said Registration
Statement  in  reliance  upon,  and  in  conformity  with,  written  information
furnished  to the  Company by or on behalf of such Holder  specifically  for use
therein.  Notwithstanding the foregoing,  the Company shall not be liable in any
such  instance  to the extent  that any such  Losses  arise out of, or are based
upon,  an untrue  statement or alleged  untrue  statement or omission or alleged
omission  made in any  Preliminary  Prospectus if (i) after the Company had made
available  sufficient number of copies of the Prospectus,  such Holder failed to
send or  deliver  a copy of the  Prospectus  with or  prior to the  delivery  of
written  confirmation  of the  sale  of  Registrable  Securities  to the  person
asserting such Losses or who purchased the  Registrable  Securities the purchase
of which is the basis of the action if, in either  instance,  such  delivery  by
such Holder is required by the Securities Act and (ii) the Prospectus would have
corrected such untrue statement or alleged untrue statement or alleged omission;
and the Company  shall not be liable in any such instance to the extent that any
such Losses  arise out of, or are based  upon,  an untrue  statement  or alleged
untrue  statement of a material fact or omission or alleged  omission to state a
material  fact in the  Prospectus,  if such untrue  statement or alleged  untrue
statement,  omission  or  alleged  omission  is  corrected  in an  amendment  or
supplement to the Prospectus and if, having  previously  been furnished by or on
behalf  of  the  Company  with  copies  of  the  Prospectus  as  so  amended  or
supplemented,  such Holder  thereafter  fails to deliver such  Prospectus  as so
amended or supplemented,  prior to or concurrently  with the sale of Registrable
Securities  if such delivery by such Holder is required by the  Securities  Act.
This indemnity  agreement will be in addition to any liability which the Company
may otherwise  have and shall remain in full force and effect  regardless of any
investigation  made by or on behalf of such  Holder or any such Person and shall
survive the Termination Date and the transfer of Registrable  Securities by such
Holder as otherwise permitted hereby.

                  (b) To the extent  permitted  by law,  each  Holder  severally
agrees to indemnify  and hold  harmless the Company,  each other Holder and each
person, if any, who controls the Company or such other Holder within the meaning
of Section 15 of the Securities Act or Section 20 of the Exchange Act, and their
respective  officers,  directors and employees,  against any Losses to which the
Company,  such  other  Holder  or such  persons  may  become  subject  under the
Securities Act, or otherwise,  insofar as such Losses arise out of, or are based
upon,  any untrue  statement or alleged  untrue  statement of any material  fact
contained in such Registration Statement,  any related Preliminary Prospectus or
any related Prospectus, or any amendment or supplement thereto, or arise out of,
or are based upon the omission or alleged  omission to state  therein a material
fact required to be stated therein or necessary to make the  statements  therein
not  misleading,  and will  reimburse  the  Company,  such other  Holder or such
persons  for  any  legal  or  other  expenses  reasonably  incurred  by

                                      -11-

<PAGE>


them in connection  with  investigating  or defending  any such Losses,  in each
instance to the extent,  but only to the extent,  that any such Losses arise out
of, or are based upon,  an untrue  statement  or alleged  untrue  statement of a
material  fact or an  omission or alleged  omission to state a material  fact in
said Registration Statement,  said Preliminary Prospectus or said Prospectus, or
any said  amendment or supplement  thereto in reliance  upon,  and in conformity
with,  written  information  furnished  to the  Company  by or on behalf of such
Holder specifically for use therein;  provided,  however,  that the liability of
each Holder under this Section 3.7(b) shall be limited to an amount equal to the
proceeds of the sale of shares of  Registrable  Securities by such Holder in the
offering which gave rise to the liability (net of underwriting  commissions paid
or incurred by such Holder in  connection  with the  registration,  if any,  and
sale).  This  indemnity  agreement  will be in addition to any  liability  which
Holder may otherwise  have and shall remain in full force and effect  regardless
of any investigation  made by or on behalf of the Company or any such person and
shall survive the Termination Date and the transfer of Registrable Securities by
such Holder as otherwise permitted hereby.

                  (c)  Promptly  after any person  entitled  to  indemnification
under this Section 3.8 receives  notice of any claim or the  commencement of any
action, the indemnified party shall, if a claim in respect thereof is to be made
against the  indemnifying  party pursuant to the  indemnification  provisions of
this Section 3.7, notify the  indemnifying  party in writing of the claim or the
commencement of such action; provided,  however, that the failure or delay to so
notify the  indemnifying  party shall not relieve it from any liability which it
may have to the  indemnified  party  hereunder  unless  and to the  extent  such
failure or delay has prejudiced the rights of the  indemnifying  party and shall
not,  in any  event,  relieve  it from  any  liability  which it may have to the
indemnified party other than pursuant to the indemnification  provisions of this
Section 3.7. If any such claim or action shall be brought against an indemnified
party, and it has notified the indemnifying party thereof in accordance with the
terms hereof,  the  indemnifying  party shall be entitled to  participate in the
defense of such claim, or, to the extent that it wishes,  jointly with any other
similarly  notified  indemnifying  party,  to assume the  defense  thereof  with
counsel reasonably satisfactory to the indemnified party, upon written notice to
the indemnified  party of such  assumption.  After notice from the  indemnifying
party to the  indemnified  party of its  election  to assume the defense of such
claim  or  action,  (i)  the  indemnifying  party  shall  not be  liable  to the
indemnified  party  pursuant to the  indemnification  provisions  hereof for any
legal  or other  expenses  subsequently  incurred  by the  indemnified  party in
connection   with  the  defense   thereof   other  than   reasonable   costs  of
investigation, (ii) the indemnifying party shall not be liable for the costs and
expenses of any  settlement of such claim or action unless such  settlement  was
effected with the consent of the indemnifying  party (which consent shall not be
unreasonably  withheld  or  delayed)  and (iii) the  indemnified  party shall be
obligated to cooperate with the indemnifying  party in the investigation of such
claim or action;  provided,  however, that any indemnified party hereunder shall
have the right to employ  separate  counsel and to participate in the defense of
such claim assumed by the indemnifying  party, but the fees and expenses of such
counsel  shall  be at the  expense  of such  indemnified  party  unless  (a) the
employment  of such counsel has been  specifically  authorized in writing by the
indemnifying  party, (b) the indemnifying  party shall have failed to assume the
defense of such claim from the person entitled to indemnification  hereunder and
failed to employ counsel within a reasonable  period  following such assumption,
or (c) in the reasonable judgment of the indemnified party, based upon

                                      -12-

<PAGE>


advice of its counsel,  a material  conflict of interest may exist  between such
indemnified  party and the  indemnifying  party with  respect to such  claims or
there  may be one or more  material  legal  defenses  available  to it which are
different from or additional to those  available to the  indemnifying  party (in
which case, if the indemnified party notifies the indemnifying  party in writing
that the indemnified  party elects to employ separate  counsel at the expense of
the  indemnifying  party,  the  indemnifying  party  shall not have the right to
assume  the  defense  of  such  claim  on  behalf  of  the  indemnified  party).
Notwithstanding  the  foregoing,  the Holders  (together  with their  respective
controlling persons and officers,  directors and employees) shall have the right
to employ at the expense of the Company only one  separate  counsel to represent
such Holders (and their respective  controlling persons and officers,  directors
and employees) who may be subject to liability arising out of any one action (or
separate but substantially  similar actions in the same jurisdiction arising out
of the same general  allegations or circumstances) in respect of which indemnity
may  be  sought  by  such   Holders   against  the   Company   pursuant  to  the
indemnification  provisions  of this Section 3.7. If such defense is not assumed
by the indemnifying  party,  the  indemnifying  party will not be subject to any
liability for any settlement made without its consent (but such consent will not
be  unreasonably  withheld or delayed).  No  indemnifying  party will consent to
entry of any judgment or enter into any  settlement  that does not include as an
unconditional  term  thereof  the giving by the  claimant or  plaintiff  to such
indemnified  party of a release  from all  liability in respect to such claim or
litigation. All fees and expenses to be paid by the indemnifying party hereunder
shall be paid a  commercially  reasonable  time  after  they are  billed  to the
indemnified  party,  subject  to  receipt  of a  written  undertaking  from  the
indemnified party to repay such fees and expenses if indemnity is not ultimately
determined to be available to such indemnified party under this Section 3.7.

                  (d) In order to provide  for just and  equitable  contribution
between   the  Company  and  such   Holders  in   circumstances   in  which  the
indemnification  provisions of this Section 3.7 are for any reason  insufficient
or  inadequate  to hold the  indemnified  party  harmless,  the Company and such
Holders shall contribute to the aggregate Losses  (including any  investigation,
legal and other fees and expenses  reasonably  incurred in connection  with, and
any amount paid in settlement  of, any action,  suit or proceeding or any claims
asserted,  but after deducting any contribution  actually  received from persons
other than the Company and such Holders) to which the Company and one or more of
its  directors  or its  officers  who sign such  Registration  Statement or such
Holders or any controlling person of any of them, or their respective  officers,
directors or employees may become  subject,  under the Securities Act, under any
other statute, at common law or otherwise,  insofar as such Losses or actions in
respect thereof arise out of, or are based upon, any untrue statement or alleged
untrue statement of any material fact contained in such  Registration  Statement
or arise out of, or are based upon,  the  omission or alleged  omission to state
therein a material fact  required to be stated  therein or necessary to make the
statements therein not misleading.  Such contributions  shall be in such amounts
that the portion of such Losses for which each such Holder shall be  responsible
under this  Section  3.7(d) shall be limited to the portion of such Losses which
are  directly  attributable  to an untrue  statement  of a  material  fact or an
omission to state a material  fact in said  Registration  Statement  in reliance
upon, and in conformity with, written information furnished to the Company by or
on behalf of any such Holder specifically for use therein, and the Company shall
be  responsible  for the balance of such  Losses;  provided,  however,  that the
liability of each such Holder to make such  contribution  shall be limited to an
amount equal to the proceeds of the sale of shares of

                                      -13-

<PAGE>


Registrable  Securities  by such Holder in the offering  which gives rise to the
liability (net of underwriting  commissions and disbursements)  paid or incurred
in connection with the  registration,  if any, and sale).  As among  themselves,
such Holders  agree to  contribute  to amounts  payable by other such Holders in
such  manner  as shall,  to the  extent  permitted  by law,  give  effect to the
provisions in Section  3.7(b).  The Company and such Holders agree that it would
not be just and equitable if their respective obligations to contribute pursuant
to this Section were to be determined by pro rata allocation  (other than as set
forth above) of the  aggregate  Losses by reference to the proceeds  realized by
such  Holders  in a  sale  pursuant  to  said  Registration  Statement  or  said
Prospectus or by any other method of  allocation  which does not take account of
the  considerations  set  forth in this  Section  3.7(d).  No  Person  guilty of
fraudulent  misrepresentation  (within  the  meaning  of  Section  11(f)  of the
Securities  Act) shall be entitled to  contribution  under this Section from any
person who was not guilty of such fraudulent misrepresentation.

         3.8 Information by Holder. The Holders whose securities are included in
any registration effected pursuant to this Section 3 shall furnish in writing to
the  Company  such  information  regarding  such  persons  and the  distribution
proposed  by such  persons as the Company may request in writing and as shall be
required  in  connection  with any  registration,  qualification  or  compliance
referred to in this Section 3. The  Company's  obligations  under this Section 3
are  conditioned  upon  compliance  by such persons with the  provisions of this
Section 3.8.

         3.9 Transfer of Registration Rights. The rights to cause the Company to
register  securities  granted by the Company  under  Sections 3.1 and 3.2 may be
assigned by HP to the transferee or assignee of not less than 20% of Registrable
Securities  (as adjusted  for stock  splits and the like) and provided  that the
Company is given written notice of any such transfer  within thirty (30) days of
the date of said  transfer,  stating the name and address of said  transferee or
assignee and identifying the securities with respect to which such  registration
rights are being  assigned and provided  further that the transferee or assignee
of such rights is not deemed by the Board of Directors  of the  Company,  in its
reasonable judgment, to be a competitor of the Company and provided further that
the  transferee  or  assignee  of  such  rights  assumes  in  writing  in a form
reasonably  acceptable to the Company the  obligations  of any Holder under this
Agreement. If the stock certificates of a transferring Holder bear a restrictive
legend,  the stock  certificates of its transferee to whom the rights  hereunder
are being transferred shall,  subject to the terms of this Agreement,  also bear
such a  restrictive  legend.  Except with respect to transfers  pursuant to this
Section 3.9, a transferee of  Registrable  Securities  shall neither  assume any
liabilities or obligations nor enjoy any rights hereunder and shall not be bound
by any of the terms hereof Each Holder hereby agrees that any transfer of shares
of  Registrable  Securities by such Holder shall be made (i) in compliance  with
the  registration  requirements  of the  Securities Act or (ii) in a transaction
exempt from the registration requirements of the Securities Act. The Company may
request, as a condition to the transfer of any Registrable Securities,  that the
transferring  Holder  provide the Company with an opinion of securities  counsel
reasonably  satisfactory  to it with regard to compliance with the terms of this
Agreement.

         3.10  Termination  of  Registration  Rights.  The  registration  rights
granted  pursuant  to this  Section 3 shall  terminate  as to any  Holder on the
Termination Date.

                                      -14-

<PAGE>


         3.11 Limitations on Subsequent  Registration Rights. From and after the
date of this Agreement, the Company shall not, without the prior written consent
of the Holders of a majority of the outstanding  Registrable  Securities,  enter
into any agreement  with any holder or  prospective  holder of any securities of
the Company which would allow such holder or prospective  holder to include such
securities in any  registration  filed under Sections 3.1 or 3.2 hereof,  unless
under the terms of such agreement, such holder or prospective holder may include
such securities in any such  registration  only to the extent that the inclusion
of his securities  will not reduce the amount of the  Registrable  Securities of
the Holders which is included.


                                   SECTION 4

                              UNREGISTERED SHARES

         4.1  Lock-Up.  HP  irrevocably  agrees  that it will not,  directly  or
indirectly,  sell, lend, offer,  contract to sell, transfer the economic risk of
ownership  in,  make  any  short  sale,  pledge  or  otherwise  dispose  of  the
Unregistered  Shares without the prior written  consent of Pinnacle until August
2, 2001.


                                   SECTION 5

                             EXCHANGE ACT REPORTING

         5.1  Exchange Act  Reporting.  At any time until the sale of all of the
Registrable Shares and the Unregistered Shares, the Company agrees to:

                  (a) file with the  Commission  in a timely  manner all reports
and other  documents  required of the Company  under the  Securities  Act or the
Exchange Act; and

                  (b)  furnish  to any  Holder,  forthwith  upon  request  (A) a
written  statement by the Company that it has complied  with the current  public
information  and reporting  requirements of Rule 144 and the Exchange Act, (B) a
copy of the most recent annual or quarterly report of the Company and such other
reports and documents so filed by the Company, and (C) such other information as
may be reasonably requested in connection with any Holder availing itself of any
rule or regulation  of the SEC which permits the selling of any such  securities
without registration or pursuant to such rule or regulation.

         5.2 Form 144. If any Holder is required to file a Form 144 with respect
to any sale of shares of Registrable or Restricted Securities, such Holder shall
promptly deliver to the Company a copy of such completed Form 144 filed with the
SEC.

                                      -15-

<PAGE>


                                   SECTION 6

                                 MISCELLANEOUS

         6.1 Governing Law. This Agreement  shall be governed in all respects by
the laws of the State of California as applied to contracts  entered into solely
between residents of, and to be performed entirely within, such state.

         6.2 Successors and Assigns.  Except for transfers  permitted by Section
2.1 and 3.10,  neither party may,  directly or indirectly,  in whole or in part,
neither by operation of law or otherwise,  assign or transfer this  Agreement or
delegate any of its obligations  under this Agreement  without the other party's
written consent. Any attempted  assignment,  transfer or delegation without such
prior written consent will be void.  Notwithstanding  the foregoing,  HP, or its
permitted  successive  assignees  or  transferees,  may assign or transfer  this
Agreement or delegate any rights or obligations  hereunder without consent:  (1)
to any entity  controlled by, or under common control with, HP, or its permitted
successive  assignees  or  transferees;  or (2)  in  connection  with a  merger,
reorganization,  transfer, sale of assets or product lines, or change of control
or  ownership  of HP, or its  permitted  successive  assignees  or  transferees.
Without limiting the foregoing, this Agreement will be binding upon and inure to
the benefit of the parties and their permitted successors and assigns.

         6.3 Entire  Agreement;  Amendment.  This Agreement  contains the entire
understanding  and  agreement  between  the  parties  with regard to the subject
matter hereof and thereof and supersedes all prior agreements and understandings
among the parties relating to the subject matter hereof.  Neither this Agreement
nor any term hereof may be amended, waived,  discharged or terminated other than
by a written instrument signed by the party against whom enforcement of any such
amendment, waiver, discharge or termination is sought.

         6.4 Notices and Dates. All notices or other communications  required or
permitted  under this Agreement  shall be made in the manner provided in Section
12.4 of the Purchase Agreement.  In the event that any date provided for in this
Agreement  falls on a  Saturday,  Sunday or legal  holiday,  such date  shall be
deemed extended to the next business day.

         6.5  Counterparts.  This  Agreement  may be  executed  in  one or  more
counterparts,  all of which shall be considered one and the same agreement,  and
shall become a binding  agreement when one or more counterparts have been signed
by each party and delivered to the other party.

         6.6 Severability. If any provision of this Agreement or portion thereof
is  held  by  a  court  of  competent   jurisdiction  to  be  invalid,  void  or
unenforceable,   the   remainder  of  the  terms,   provisions,   covenants  and
restrictions  of this Agreement  shall remain in full force and effect and shall
in no way be affected, impaired or invalidated.

                                      -16-

<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective authorized officers as of the date aforesaid.

"COMPANY"                  PINNACLE SYSTEMS, INC.,
                           a California corporation

                           By: /S/Arthur D. Chadwick
                               -------------------------------------------------
                           Name:  Arthur D. Chadwick
                                  ----------------------------------------------
                           Title: Vice President, Finance and Administration
                                  ----------------------------------------------


"HP"                       HEWLETT-PACKARD COMPANY,
                           a Delaware corporation

                           By: /S/Tom White
                               -------------------------------------------------
                           Name:  Tom White
                                  ----------------------------------------------
                           Title: Vice President, Communications Solutions Group
                                  ----------------------------------------------

                                      -17-



                                                                     EXHIBIT 5.1

                [LETTERHEAD OF WILSON SONSINI GOODRICH & ROSATI]

                                 August 17, 1999



Pinnacle Systems, Inc.
280 North Bernardo Avenue
Mountain View, California 94043

         RE:      Registration Statement on Form S-3

Ladies and Gentlemen:

         We have examined Amendment No. 1 to the Registration  Statement on Form
S-3 to be filed  by you  with the SEC on  August  17,  1999  (the  "Registration
Statement"),  in connection  with the  registration  under the Securities Act of
1933,  as amended,  of 386,586  shares of your Common  Stock,  no par value (the
"Shares"),  all of which are authorized and have been  previously  issued to the
selling  shareholder  named therein in connection  with the  acquisition  by the
Company of certain of the assets of the selling  shareholder.  The Shares are to
be offered by the selling shareholder for sale to the public as described in the
Registration Statement. As your counsel in connection with this transaction,  we
have examined the proceedings  taken and proposed to be taken in connection with
the sale of the Shares.

         It is our opinion that, upon completion of the proceedings  being taken
or contemplated to be taken prior to the  registration of the Shares,  including
such proceedings to be carried out in accordance with the securities laws of the
various states, where required,  the Shares, when sold in the manner referred to
in the Registration  Statement,  will be legally and validly issued,  fully paid
and nonassessable.

         We consent to the use of this opinion as an exhibit to the Registration
Statement,  and further consent to the use of our name wherever appearing in the
Registration  Statement,  including the Prospectus  constituting a part thereof,
and any amendment thereto.

                                        Very truly yours,

                                        /s/ WILSON SONSINI GOODRICH & ROSATI

                                        WILSON SONSINI GOODRICH & ROSATI
                                        Professional Corporation



                                                                    EXHIBIT 23.1

                         Consent of Independent Auditors

The Board of Directors
Pinnacle Systems, Inc.:

We consent to  incorporation  herein by reference of our reports  dated July 21,
1998, relating to the consolidated balance sheets of Pinnacle Systems,  Inc. and
subsidiaries  as of  June  30,  1998  and  1997,  and the  related  consolidated
statements of operations,  comprehensive income,  shareholders' equity, and cash
flows for each of the years in the  three-year  period ended June 30, 1998,  and
the related  schedule,  which reports appear in the June 30, 1998, annual report
on Form 10-K of Pinnacle  Systems,  Inc. We also consent to the reference to our
firm under the heading "Experts" in the registration statement.

/s/ KPMG LLP
- -------------------------

Mountain View, California
August 16, 1999



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