ANNEX IV
                          REGISTRATION RIGHTS AGREEMENT
                  THIS REGISTRATION  RIGHTS  AGREEMENT,  dated as of January __,
1998 (this "Agreement"), is made by and between STARBASE CORPORATION, a Delaware
corporation (the  "Company"),  and the entity named on the signature page hereto
(the "Initial Investor").
                                               W I T N E S S E T H:
                  WHEREAS,  upon the terms and subject to the  conditions of the
Securities Purchase Agreement, dated as of January __, 1998, between the Initial
Investor and the Company (the "Securities Purchase Agreement"),  the Company has
agreed to issue and sell to the Initial  Investor one or more Series E Preferred
Stock  of  the  Company,  in an  aggregate  principal  amount  not  exceeding  $
(collectively, the "Preferred Stock"), which Preferred Stock will be convertible
into shares of the common  stock,  $.01 par value (the "Common  Stock"),  of the
Company (the  "Conversion  Shares") upon the terms and subject to the conditions
of the  Certificate  of  Designation  (as  defined  in the  Securities  Purchase
Agreement),  and  warrants  to  purchase  up to  shares  of  Common  Stock  (the
"Warrants"),  which Warrants will be exercisable for shares of Common Stock (the
"Warrant Shares"); and
                  WHEREAS, to induce the Initial Investor to execute and deliver
the Securities  Purchase  Agreement,  the Company has agreed to provide  certain
registration rights under the Securities Act of 1933, as amended,  and the rules
and regulations thereunder, or any similar successor statute (collectively,  the
"Securities Act"), with respect to the Conversion Shares and Warrant Shares;
                  NOW,  THEREFORE,  in  consideration  of the  premises  and the
mutual covenants contained herein and other good and valuable consideration, the
receipt and  sufficiency of which are hereby  acknowledged,  the Company and the
Initial Investor hereby agrees as follows:
                  1.       DEFINITIONS.
                  (a) As used in this Agreement,  the following terms shall have
the following meanings:
                  (i)  "Investor"  means the Initial  Investor and any permitted
transferee  or assignee  who agrees to become  bound by the  provisions  of this
Agreement in accordance with Section 9 hereof.
                  (ii) "Register,"  "Registered," and "Registration"  refer to a
registration  effected  by  preparing  and filing a  Registration  Statement  or
Statements in compliance  with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for
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offering  securities on a continuous  basis ("Rule 415"), and the declaration or
ordering of  effectiveness of such  Registration  Statement by the United States
Securities and Exchange Commission (the "SEC").
                  (iii) "Registrable Securities" means the Conversion Shares and
the Warrant Shares.
                  (iv) "Registration  Statement" means a registration  statement
of the Company under the Securities Act.
                  (b)  Capitalized  terms used herein and not otherwise  defined
herein shall have the respective  meanings set forth in the Securities  Purchase
Agreement.
                  2.       REGISTRATION.
                  (A) MANDATORY REGISTRATION. The Company shall prepare and file
with the SEC a Registration  Statement on Form S-3 registering for resale by the
Investor a sufficient number of shares of Common Stock for the Initial Investors
(or such lesser  number as may be required by the SEC, but in no event less than
the number of shares into which the Preferred Stock would be convertible and the
Warrants  exercisable  at the time of filing of the Form S-3, or an amendment to
any pending Company  Registration  Statement on Form S-3, and such  Registration
Statement or amended Registration Statement shall state that, in accordance with
Rule 416 and 457 under the  Securities  Act, it also  covers such  indeterminate
number  of  additional  shares  of  Common  Stock as may  become  issuable  upon
conversion  of the  Preferred  Stock and the exercise of the Warrants  resulting
from adjustment in the Conversion  Price, or to prevent dilution  resulting from
stock  splits,  or  stock  dividends),  which  Registration  Statement  shall be
declared effective no later than 120 days after the Closing Date. If at any time
the  number of shares of Common  Stock  into  which the  Preferred  Stock may be
converted   exceeds  the  aggregate  number  of  shares  of  Common  Stock  then
registered,  the Company shall, within ten (10) business days after receipt of a
written notice from any Investor,  either (i) amend the  Registration  Statement
filed by the Company pursuant to the preceding  sentence,  if such  Registration
Statement has not been  declared  effective by the SEC at that time, to register
all shares of Common Stock into which the Preferred  Stock may be converted,  or
(ii) if such  Registration  Statement has been declared  effective by the SEC at
that time, file with the SEC an additional Registration Statement on Form S-3 to
register  the  shares of Common  Stock  into  which the  Preferred  Stock may be
converted  that exceed the  aggregate  number of shares of Common Stock  already
registered.
                  (B)      PAYMENTS BY THE COMPANY.
                           If the Registration Statement covering the
Registrable Securities required to be filed by the Company pursuant to Section
2(a) hereof is not effective by one hundred
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twenty (120) days following the initial  Closing Date (the  "Required  Effective
Date")  (except as provided  by the last  sentence  of Section  2(a)),  then the
Company will make  payments to the Initial  Investor in such amounts and at such
times as shall be  determined  pursuant to this Section  2(b).  The amount to be
paid by the  Company to the  Initial  Investor  shall be  determined  as of each
Computation  Date,  and such  amount  shall be equal to one (1%)  percent of the
purchase  price  paid by the  Initial  Investor  for all  Preferred  Stock  then
purchased and outstanding  pursuant to the Securities Purchase Agreement for any
period from the Required  Effective Date to the first Computation Date, two (2%)
percent to the next  Computation Date and three (3%) percent to each Computation
Date thereafter,  until the Registration  Statement is declared effective by the
SEC (the  "Periodic  Amount").  The full  Periodic  Amount  shall be paid by the
Company in  immediately  available  funds within three  business days after each
Computation  Date.  Notwithstanding  the foregoing,  the amounts  payable by the
Company  pursuant to this provision shall not be payable to the extent any delay
in the effectiveness of the Registration  Statement occurs because of an act of,
or a failure to act or to act timely by the  Initial  Investor or its counsel or
the SEC, or in the event all of the Registrable  Securities may be sold pursuant
to Rule 144 or another available exemption under the Act.
                  As used in this Section 2(b),  the following  terms shall have
the following meanings:
                  "Computation  Date"  means the date which is thirty  (30) days
after the Required  Effective  Date (except as provided by the last  sentence of
Section 2(a)),  and, if the Registration  Statement  required to be filed by the
Company pursuant to Section 2(a) has not theretofore been declared  effective by
the SEC, each date which is thirty (30) days after the previous Computation Date
(pro rated for partial periods) until such Registration Statement is so declared
effective.
                  3.  OBLIGATIONS  OF  THE  COMPANY.   In  connection  with  the
registration  of the  Registrable  Securities,  the Company shall do each of the
following.
                  (a)  Prepare  promptly  and file with the SEC, a  Registration
Statement  with  respect to not less than the number of  Registrable  Securities
provided in Section 2(a),  above, and thereafter use its reasonable best efforts
to cause each  Registration  Statement  relating to  Registrable  Securities  to
become  effective one hundred twenty (120) days after the Closing Date, and keep
the  Registration  Statement  effective  at all times  until the  earliest  (the
"Registration Period") of (i) the date that is four years after the Closing Date
(ii) the date when the Investors may sell all Registrable  Securities under Rule
144 or  (iii)  the date  the  Investors  no  longer  own any of the  Registrable
Securities,   which   Registration   Statement   (including  any  amendments  or
supplements  thereto and prospectuses  contained  therein) shall 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 in which they were made, not misleading;
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                  (b) Prepare and file with the SEC such  amendments  (including
post-effective amendments) and supplements to the Registration Statement and the
prospectus  used  in  connection  with  the  Registration  Statement  as  may be
necessary  to  keep  the   Registration   effective  at  all  times  during  the
Registration  Period,  and,  during the  Registration  Period,  comply  with the
provisions  of  the  Securities  Act  with  respect  to the  disposition  of all
Registrable  Securities  of the Company  covered by the  Registration  Statement
until such time as all of such  Registrable  Securities have been disposed of in
accordance  with the intended  methods of  disposition  by the seller or sellers
thereof as set forth in the Registration Statement;
                  (c)  The  Company  shall  permit  a  single  firm  of  counsel
designated by the Initial Investors to review the Registration Statement and all
amendments and  supplements  thereto a reasonable  period of time prior to their
filing with the SEC.
                  (d) Furnish to each Investor whose Registrable  Securities are
included in the Registration  Statement and its legal counsel  identified to the
Company, (i) promptly after the same is prepared and publicly distributed, filed
with the SEC,  or  received  by the  Company,  one (1) copy of the  Registration
Statement,  each  preliminary  prospectus and prospectus,  and each amendment or
supplement  thereto,  and (ii) such  number of copies of a  prospectus,  and all
amendments and supplements  thereto and such other  documents,  as such Investor
may reasonably request in order to facilitate the disposition of the Registrable
Securities owned by such Investor;
                  (e) As promptly as  practicable  after  becoming aware of such
event,  notify each  Investor of the happening of any event of which the Company
has knowledge,  as a result of which the prospectus included in the Registration
Statement, as then in effect, includes an untrue statement of a material fact or
omits 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 use its best efforts promptly to prepare a supplement
or amendment to the Registration  Statement or other appropriate filing with the
SEC to correct such untrue statement or omission, and deliver a number of copies
of such supplement or amendment to each Investor as such Investor may reasonably
request;
                  (f) As promptly as  practicable  after  becoming aware of such
event, notify each Investor who holds Registrable  Securities being sold (or, in
the  event  of an  underwritten  offering,  the  managing  underwriters)  of the
issuance by the SEC of a Notice of  Effectiveness or any notice of effectiveness
or any stop order or other  suspension of the  effectiveness of the Registration
Statement at the earliest possible time;
                  (g) Use its  reasonable  efforts to secure  designation of all
the Registrable  Securities covered by the Registration  Statement as a National
Association of Securities Dealers Automated  Quotations System ("NASDAQ") "Small
Capitalization"  within  the  meaning  of  Rule  11Aa2-1  of the SEC  under  the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act"),  and the
quotation of the Registrable Securities on the NASDAQ SmallCap Market; or if,
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                                       -4-
despite the Company's  reasonable  efforts to satisfy the preceding clause,  the
Company  is  unsuccessful  in doing  so,  to secure  NASDAQ/OTC  Bulletin  Board
authorization  and  quotation  for  such  Registrable  Securities  and,  without
limiting the  generality  of the  foregoing,  to arrange for at least two market
makers to register with the National  Association  of Securities  Dealers,  Inc.
("NASD") as such with respect to such Registrable Securities;
                  (h)  Provide a transfer  agent and  registrar,  which may be a
single entity, for the Registrable  Securities not later than the effective date
of the Registration Statement;
                  (i)  Cooperate   with  the  Investors  who  hold   Registrable
Securities  being offered to facilitate the timely  preparation  and delivery of
certificates  for the  Registrable  Securities  to be  offered  pursuant  to the
Registration   Statement  and  enable  such  certificates  for  the  Registrable
Securities  to be in such  denominations  or  amounts as the case may be, as the
Investors may reasonably  request,  and,  within three (3) business days after a
Registration   Statement  which  includes  Registrable   Securities  is  ordered
effective by the SEC, the Company shall  deliver,  and shall cause legal counsel
selected by the Company to deliver,  to the transfer  agent for the  Registrable
Securities  (with  copies to the  Investors  whose  Registrable  Securities  are
included in such Registration  Statement) an appropriate instruction and opinion
of such counsel; and
                  (j) Take all other  reasonable  actions  necessary to expedite
and  facilitate  disposition  by  the  Investor  of the  Registrable  Securities
pursuant to the Registration Statement.
                  4.  OBLIGATIONS  OF THE  INVESTORS.  In  connection  with  the
registration  of the  Registrable  Securities,  the  Investors  shall  have  the
following obligations:
                  (a) It shall be a condition  precedent to the  obligations  of
the Company to complete the registration pursuant to this Agreement with respect
to the Registrable  Securities of a particular Investor that such Investor shall
furnish to the  Company  such  information  regarding  itself,  the  Registrable
Securities held by it, and the intended method of disposition of the Registrable
Securities  held  by  it,  as  shall  be  reasonably   required  to  effect  the
registration of such Registrable  Securities and shall execute such documents in
connection  with such  registration  as the Company may reasonably  request.  At
least  five  (5)  days  prior  to  the  first  anticipated  filing  date  of the
Registration   Statement,   the  Company  shall  notify  each  Investor  of  the
information  the  Company  requires  from each  such  Investor  (the  "Requested
Information") if such Investor elects to have any of such Investor's Registrable
Securities included in the Registration  Statement. If at least two (2) business
days  prior to the  filing  date the  Company  has not  received  the  Requested
Information from an Investor (a "Non-Responsive Investor"), then the Company may
file the Registration Statement without including Registrable Securities of such
Non-Responsive Investor;
                  (b)  Each  Investor  by  such  Investor's  acceptance  of  the
Registrable  Securities  agrees to  cooperate  with the  Company  as  reasonably
requested by the Company in connection
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                                       -5-
with the preparation and filing of the Registration Statement hereunder,  unless
such Investor has notified the Company in writing of such Investor's election to
exclude all of such  Investor's  Registrable  Securities  from the  Registration
Statement; and
                  (c) Each Investor agrees that, upon receipt of any notice from
the Company of the happening of any event of the kind  described in Section 3(e)
or 3(f),  above,  such  Investor will  immediately  discontinue  disposition  of
Registrable  Securities  pursuant to the  Registration  Statement  covering such
Registrable  Securities  until  such  Investor's  receipt  of the  copies of the
supplemented or amended prospectus  contemplated by Section 3(e) or 3(f) and, if
so directed by the Company,  such Investor  shall deliver to the Company (at the
expense of the Company) or destroy (and deliver to the Company a certificate  of
destruction)  all  copies  in  such  Investor's  possession,  of the  prospectus
covering  such  Registrable  Securities  current  at the time of receipt of such
notice.
                  5. EXPENSES OF REGISTRATION.  All reasonable  expenses,  other
than  underwriting   discounts  and  commissions  incurred  in  connection  with
registrations,  filings or qualifications  pursuant to Section 3, but including,
without limitation, all registration, listing, and qualifications fees, printers
and  accounting  fees,  the fees and  disbursements  of counsel for the Company,
shall be borne by the Company.
                  6.  INDEMNIFICATION.  In the event any Registrable  Securities
are included in a Registration Statement under this Agreement:
                  (a) To the extent permitted by law, the Company will indemnify
and hold  harmless  each  Investor who holds such  Registrable  Securities,  the
directors,  if any, of such  Investor,  the officers,  if any, of such Investor,
each  person,  if any,  who  controls  any  Investor  within the  meaning of the
Securities  Act  or  the  Exchange  Act  (each,  an   "Indemnified   Person"  or
"Indemnified  Party"),  against  any losses,  claims,  damages,  liabilities  or
expenses (joint or several)  incurred  (collectively,  "Claims") to which any of
them may become subject under the Securities Act, the Exchange Act or otherwise,
insofar  as such  Claims  (or  actions  or  proceedings,  whether  commenced  or
threatened,  in  respect  thereof)  arise  out of or are  based  upon any of the
following statements,  omissions or violations in the Registration Statement, or
any post-effective  amendment thereof, or any prospectus  included therein:  (i)
any untrue statement or alleged untrue statement of a material fact contained in
the  Registration  Statement  or any  post-effective  amendment  thereof  or 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,  (ii)
any untrue statement or alleged untrue statement of a material fact contained in
the final  prospectus  (as amended or  supplemented,  if the  Company  files any
amendment thereof or supplement thereto with the SEC) or the omission or alleged
omission to state  therein any material  fact  necessary to make the  statements
made therein,  in light of the circumstances  under which the statements therein
were made,  not  misleading or (iii) any  violation or alleged  violation by the
Company of the Securities Act, the Exchange Act, any state securities law or any
rule or  regulation  under the  Securities  Act,  the  Exchange Act or any state
securities law (the matters in the foregoing clauses
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                                       -6-
(i) through (iii) being, collectively,  "Violations").  Subject to clause (b) of
this Section 6, the Company  shall  reimburse  the  Investors,  promptly as such
expenses  are  incurred  and are due and  payable,  for any legal  fees or other
reasonable  expenses  incurred  by  them in  connection  with  investigating  or
defending  any such Claim.  Notwithstanding  anything to the contrary  contained
herein, the  indemnification  agreement contained in this Section 6(a) shall not
(I) apply to a Claim  arising out of or based upon a Violation  which  occurs in
reliance upon and in  conformity  with  information  furnished in writing to the
Company  by or on  behalf  of  any  Indemnified  Person  expressly  for  use  in
connection  with  the  preparation  of the  Registration  Statement  or any such
amendment  thereof or supplement  thereto,  (II) be available to the extent such
Claim is based on a failure of the  Investor to deliver or cause to be delivered
the prospectus made available by the Company;  or (III) apply to amounts paid in
settlement of any Claim if such settlement is effected without the prior written
consent of the Company, which consent shall not be unreasonably  withheld.  Each
Investor  will  indemnify  the Company and its  officers,  directors  and agents
against  any claims  arising out of or based upon a  Violation  which  occurs in
reliance upon and in  conformity  with  information  furnished in writing to the
Company, by or on behalf of such Investor,  expressly for use in connection with
the preparation of the Registration  Statement,  subject to such limitations and
conditions as are applicable to the  Indemnification  provided by the Company to
this Section 6. Such indemnity shall remain in full force and effect  regardless
of any  investigation  made by or on behalf of the Indemnified  Person and shall
survive the transfer of the Registrable  Securities by the Investors pursuant to
Section 9.
                  (b)  Promptly  after  receipt  by  an  Indemnified  Person  or
Indemnified  Party  under this  Section 6 of notice of the  commencement  of any
action  (including  any  governmental   action),   such  Indemnified  Person  or
Indemnified Party shall, if a Claim in respect thereof is to be made against any
indemnifying  party under this  Section 6, deliver to the  indemnifying  party a
written notice of the commencement thereof and the indemnifying party shall have
the right to  participate  in,  and,  to the  extent the  indemnifying  party so
desires,  jointly with any other indemnifying party similarly noticed, to assume
control  of the  defense  thereof  with  counsel  mutually  satisfactory  to the
indemnifying  party and the Indemnified  Person or the Indemnified Party, as the
case may be. In case any such action is brought against any  Indemnified  Person
or Indemnified Party, and it notifies the indemnifying party of the commencement
thereof,  the indemnifying party will be entitled to participate in, and, to the
extent that it may wish,  jointly with any other  indemnifying  party  similarly
notified,  assume the defense thereof,  subject to the provisions  herein stated
and after  notice  from the  indemnifying  party to such  Indemnified  Person or
Indemnified  Party  of its  election  so to  assume  the  defense  thereof,  the
indemnifying  party will not be liable to such Indemnified Person or Indemnified
Party  under  this  Section  6 for any legal or other  reasonable  out-of-pocket
expenses  subsequently  incurred by such Indemnified Person or Indemnified Party
in  connection  with  the  defense  thereof  other  than  reasonable   costs  of
investigation,  unless the indemnifying party shall not pursue the action of its
final  conclusion.  The Indemnified  Person or Indemnified  Party shall have the
right to employ  separate  counsel in any such action and to  participate in the
defense  thereof,  but the fees and  reasonable  out-of-pocket  expenses of such
counsel  shall  not  be  at  the  expense  of  the  indemnifying  party  if  the
indemnifying party has assumed the defense of the action with counsel reasonably
satisfactory to
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                                       -7-
the  Indemnified  Person or Indemnified  Party.  The failure to deliver  written
notice to the indemnifying party within a reasonable time of the commencement of
any such action shall not relieve such  indemnifying  party of any  liability to
the Indemnified  Person or Indemnified Party under this Section 6, except to the
extent that the  indemnifying  party is prejudiced in its ability to defend such
action. The indemnification required by this Section 6 shall be made by periodic
payments  of the  amount  thereof  during  the  course of the  investigation  or
defense,  as such expense,  loss, damage or liability is incurred and is due and
payable.
                  7.  CONTRIBUTION.  To the  extent  any  indemnification  by an
indemnifying  party is  prohibited  or limited by law,  the  indemnifying  party
agrees to make the maximum contribution with respect to any amounts for which it
would  otherwise be liable under  Section 6 to the fullest  extent  permitted by
law;  PROVIDED,   HOWEVER,   that  (a)  no  contribution  shall  be  made  under
circumstances  where the maker  would not have been  liable for  indemnification
under the fault  standards set forth in Section 6; (b) no seller of  Registrable
Securities guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Securities Act) shall be entitled to  contribution  from any seller
of   Registrable   Securities   who  was   not   guilty   of   such   fraudulent
misrepresentation;  and (c) contribution by any seller of Registrable Securities
shall be limited in amount to the net amount of proceeds received by such seller
from the sale of such Registrable Securities.
                  8. REPORTS UNDER EXCHANGE ACT. With a view to making available
to the Investors the benefits of Rule 144  promulgated  under the Securities Act
or any other  similar rule or  regulation of the SEC that may at any time permit
the  Investors  to  sell  securities  of  the  Company  to  the  public  without
registration ("Rule 144"), the Company agrees to:
                  (a) make and keep public information available, as those terms
are understood and defined in Rule 144;
                  (b) file with the SEC in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act;
and
                  (c)  furnish to each  Investor so long as such  Investor  owns
Registrable  Securities,  promptly upon request,  (i) a written statement by the
Company that it has complied  with the reporting  requirements  of Rule 144, the
Securities  Act and the Exchange  Act,  (ii) 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 (iii) such other  information as may be reasonably  requested to
permit  the  Investors  to sell such  securities  pursuant  to Rule 144  without
registration.
                  9. ASSIGNMENT OF THE REGISTRATION  RIGHTS.  The rights to have
the Company register Registrable  Securities pursuant to this Agreement shall be
automatically  assigned by the Investors to any  transferee  of the  Registrable
Securities  (or all or any shares of  Preferred  Stock of the  Company  which is
convertible  into such  securities)  only if: (a) the Investor agrees in writing
with the  transferee  or  assignee  to assign  such  rights,  and a copy of such
agreement is furnished to
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                                       -8-
the Company within a reasonable time after such assignment,  (b) the Company is,
within a  reasonable  time after such  transfer or  assignment,  furnished  with
written  notice of (i) the name and address of such  transferee  or assignee and
(ii) the  securities  with respect to which such  registration  rights are being
transferred or assigned,  (c) immediately  following such transfer or assignment
the further  disposition  of such  securities  by the  transferee or assignee is
restricted  under the Securities Act and applicable  state  securities laws, and
(d) at or before the time the Company  received the written notice  contemplated
by clause (b) of this sentence the transferee or assignee agrees in writing with
the Company to be bound by all of the provisions  contained herein. In the event
of any delay in filing  or  effectiveness  of the  Registration  Statement  as a
result of such  assignment,  the  Company  shall not be liable  for any  damages
arising from such delay, or the payments set forth in Section 2(c) hereof.
                  10.  AMENDMENT OF REGISTRATION  RIGHTS.  Any provision of this
Agreement  may be  amended  and the  observance  thereof  may be waived  (either
generally   or  in  a   particular   instance   and  either   retroactively   or
prospectively),  only with the written  consent of the Company and Investors who
hold an  eighty  (80%)  percent  interest  of the  Registrable  Securities.  Any
amendment or waiver effected in accordance with this Section 10 shall be binding
upon each Investor and the Company.
                  11.      MISCELLANEOUS.
                  (a) A person or entity is deemed to be a holder of Registrable
Securities  whenever  such  person or entity  owns of  record  such  Registrable
Securities.  If  the  Company  receives  conflicting  instructions,  notices  or
elections  from  two or more  persons  or  entities  with  respect  to the  same
Registrable  Securities,  the Company shall act upon the basis of  instructions,
notice  or  election  received  from the  registered  owner of such  Registrable
Securities.
                  (b) Notices  required or permitted to be given hereunder shall
be in  writing  and shall be deemed to be  sufficiently  given  when  personally
delivered  (by hand,  by courier,  by  telephone  line  facsimile  transmission,
receipt  confirmed,  or other means) or sent by certified  mail,  return receipt
requested,  properly  addressed and with proper  postage  pre-paid (i) if to the
Company,  STARBASE  CORPORATION,  ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇,  ▇▇▇▇▇ ▇▇▇, ▇▇▇▇▇▇,
▇▇▇▇▇▇▇▇▇▇  ▇▇▇▇▇,  ATTN:  President,  with a copy to  ▇▇▇▇▇▇  ▇▇▇▇▇▇  Flattau &
Klimpl, LLP, ▇▇▇▇ ▇▇▇▇▇▇ ▇▇ ▇▇▇ ▇▇▇▇▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, ATTN: ▇▇▇▇▇▇
▇▇▇▇ ▇▇▇▇▇▇▇▇,  Esq.; (ii) if to the Initial Investor,  at the address set forth
under its name in the Securities Purchase  Agreement,  and (iii) if to any other
Investor, at such address as such Investor shall have provided in writing to the
Company,  or at such other address as each such party  furnishes by notice given
in accordance with this Section 11(b),  and shall be effective,  when personally
delivered,  upon receipt and, when so sent by certified  mail, four (4) calendar
days after deposit with the United States Postal Service.
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                                       -9-
                  (c) Failure of any party to exercise any right or remedy under
this  Agreement or otherwise,  or delay by a party in  exercising  such right or
remedy, shall not operate as a waiver thereof.
                  (d) This  Agreement  shall be governed by and  interpreted  in
accordance with the laws of the State of New York. Each of the parties  consents
to the jurisdiction of the federal courts whose districts  encompass any part of
the City of New York or the state courts of the State of New York sitting in the
City of New York in connection with any dispute arising under this Agreement and
hereby waives, to the maximum extent permitted by law, any objection,  including
any  objection  based  on  FORUM  NON  COVENIENS,  to the  bringing  of any such
proceeding  in such  jurisdictions.  A  facsimile  transmission  of this  signed
Agreement shall be legal and binding on all parties  hereto.  This Agreement may
be  signed  in one or more  counterparts,  each of  which  shall  be  deemed  an
original.  The headings of this  Agreement are for  convenience of reference and
shall not form part of, or affect the interpretation of, this Agreement.  If any
provision  of  this  Agreement  shall  be  invalid  or   unenforceable   in  any
jurisdiction,  such invalidity or unenforceability shall not affect the validity
or  enforceability  of the  remainder  of  this  Agreement  or the  validity  or
enforceability of this Agreement in any other  jurisdiction.  This Agreement may
be amended only by an  instrument  in writing  signed by the party to be charged
with   enforcement.   This  Agreement   supersedes  all  prior   agreements  and
understandings  among the  parties  hereto with  respect to the  subject  matter
hereof.
                  (e) This Agreement  constitutes the entire agreement among the
parties  hereto  with  respect  to  the  subject  matter  hereof.  There  are no
restrictions,  promises, warranties or undertakings,  other than those set forth
or  referred to herein.  This  Agreement  supersedes  all prior  agreements  and
understandings  among the  parties  hereto with  respect to the  subject  matter
hereof.
                  (f)  Subject to the  requirements  of  Section 9 hereof,  this
Agreement  shall inure to the benefit of and be binding upon the  successors and
assigns of each of the parties hereto.
                  (g) All  pronouns  and any  variations  thereof  refer  to the
masculine, feminine or neuter, singular or plural, as the context may require.
                  (h) The  headings in this  Agreement  are for  convenience  of
reference only and shall not limit or otherwise affect the meaning thereof.
                  (i)  This   Agreement   may  be   executed   in  two  or  more
counterparts,  each of which shall be deemed an original  but all of which shall
constitute one and the same agreement. This Agreement, once executed by a party,
may be  delivered  to  the  other  party  hereto  by  telephone  line  facsimile
transmission  of a copy of this Agreement  bearing the signature of the party so
delivering this Agreement.
                  (j) Neither party shall be liable for consequential damages.
260116-1                                                              1/8/98
                                      -10-
                  IN WITNESS WHEREOF,  the parties have caused this Agreement to
be duly executed by their  respective  officers  thereunto duly authorized as of
the day and year first above written.
                                            STARBASE CORPORATION
                                            By:
                                            Name:
                                            Title:
                                            [                              ]
                                            By:
                                            Name:
                                            Title:
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                                      -11-