EXHIBIT 10.1

   Restatement  #1:  Effective October 28, 1986
   Restatement  #2:  Effective February 7, 1989
   Restatement  #3:  Effective October 16, 1990
   Restatement  #4:  Effective January 28, 1992
   Restatement  #5:  Effective August 1, 1995
   Restatement  #6:  Effective April 23, 1997


                           STRATUS COMPUTER, INC.
                      STOCK OPTION PLAN (January, 1983)
                           RESTATEMENT NUMBER SIX

1. Purpose.  The purpose of this Plan is to  advance  the  interests  of Stratus
Computer,  Inc.  (the  "Company")  by providing an  opportunity  to selected key
employees of the Company and its  subsidiaries  to purchase stock of the Company
through the exercise of options  granted  under this Plan. By  encouraging  such
stock ownership,  the Company seeks to attract, retain and motivate employees of
training,  experience  and  ability.  It is intended  that this  purpose will be
effected by the granting of stock options as provided herein.


2. Amendment and Restatement of Prior Plan. This plan continues,  in amended and
restated form, the Incentive  Stock Option Plan (January,  1983) (the "Incentive
Stock Option Plan"),  as previously  amended and restated  effective October 28,
1986 ("Restatement  Number One"),  February 7, 1989 ("Restatement  Number Two"),
October 16, 1990  ("Restatement  Number Three"),  January 28, 1992 ("Restatement
Number Four") which Amendment  extended the  termination  date of the Plan until
December  31, 2003 and for purposes of Section  422(b)2 of the Internal  Revenue
Code of 1986,  as Amended (the "Code"),  constitutes  a new plan,  and August 1,
1995  (Restatement  Number 5) which Amendment caused the Plan to comply with the
requirements  of Rule  16b-3  promulgated  under  Section  16 of the  Securities
Exchange Act of 1934, as Amended ("Rule  16b-3").  This Stratus  Computer,  Inc.
Stock Option Plan (January,  1983) Restatement Number Six (the "Plan") effective
April  23,  1997,  reflects  Amendments  to the  Plan  adopted  by the  Board of
Directors of the Company  (the  "Board") on October 22,  1996,  the sole purpose
of which was to alter Plan definitions as a result of new rules issued  for  the
Securities Exchange Act of 1934, as  amended,  and  further  reflects amendments
adopted by the Board on January  13, 1997 and approved  by the  shareholders  on
April 23, 1997 to (a)  increase  the maximum combined aggregate number of shares
reserved for issuance under the Plan by 1,500,000 to 10,880,200 and (b) increase
the maximum aggregate annual  limitation  on  Shares  for  which  options may be
granted to a participant under the Plan from 100,000 to 500,000.

3.  Effective  Date.  The Plan  became  effective  as of January  1, 1983.  This
Restatement  Number Six of the Plan became effective on April 23, 1997, the date
the  last  amendment  incorporated  in  this  restatement  was  approved  by the
shareholders. To the extent at any time that amendments are made to the Plan for
which shareholder  approval is necessary under applicable tax or securities laws
or under the Board action adopting such  amendment,  options that may be granted
only as a result of such amendments may be granted before such approval,  but no
such options may be exercised  until such  approval is obtained and such options
will be null and void if such approval is not obtained.



4. Stock  Subject to the Plan.  The shares  that may be granted  under this Plan
shall not exceed in the aggregate 10,880,200 shares of the $.01 par value Common
Stock of the Company (the "Shares"); provided, however, that such maximum number
of Shares  shall be reduced by the number of any Shares that are made subject to
options (which have not subsequently expired or been terminated before exercise)
pursuant to the Stratus Computer,  Inc.  Non-Qualified Common Stock Option Plan.
Any Shares  subject to an option under this Plan which for any reason expires or
is  terminated  unexercised  as to such  Shares  may again be the  subject of an
option under the Plan.  In addition,  any Shares  purchased by an optionee  upon
exercise of an option under this Plan that are  subsequently  repurchased by the
Company  pursuant  to the terms of such  option  may again be the  subject of an
option under the Plan. The Shares  delivered upon exercise of options under this
Plan may, in whole or in part,  be  either  authorized  but  unissued Shares  or
issued Shares reacquired by the Company.


5.  Administration.  This Plan shall be  administered by a committee (the "Stock
Option Committee")  consisting of three (3) or more members of the Board who are
not employees of the Company,  none of whom shall be eligible to  participate in
the Plan and all of whom shall be "disinterested  persons" as defined under Rule
16b-3.  The Stock Option  Committee shall be appointed by and shall serve at the
pleasure of the Board.  Subject to the  provisions of this Plan,  said Committee
shall have full power to construe and interpret the Plan and to establish, amend
and rescind rules and regulations for its administration.


6.  Eligible Employees.   Options may be granted to such key employees of the
Company or of any of its subsidiaries, including members of the Board who are
also employees of the Company or any of its subsidiaries, as are selected by the
Stock Option Committee.


7. Duration of the Plan. This Plan shall terminate on December 31, 2003,  unless
terminated  earlier  pursuant to Paragraph 13  hereafter,  and no options may be
granted thereafter.


8.   Restrictions on Incentive Options.  Incentive options (but not nonqualified
options) granted under this Plan shall be subject to the following restrictions:


(a)      Limitation on Number of Shares.  (i)  With respect to incentive options
granted  before January 1, 1987, the aggregate fair market value, determined
as of the date the incentive option is granted, of the Shares for which an
employee may be granted  incentive  option in any calendar year shall not exceed
$100,000  plus any  "unused  limit  carryovers,"  as that term is defined  under
Section  422A(c)(4) of the Code (as in effect immediately prior to its amendment
by the Tax Reform Act of 1986),  available in such year;  or (ii) for  incentive
options  granted  after  December 31, 1986,  the  aggregate  fair market  value,
determined  as of the date the incentive  option is granted,  of the Shares with
respect to which  incentive  options  are  exercisable  for the first time by an
employee during any calendar year shall not exceed  $100,000.  In the event that
an employee is eligible to participate in any other incentive stock option plans
of the Company or any of its subsidiaries which are also intended to comply with
the  provisions of Section 422 of the Code,  the  applicable  annual  limitation
shall apply to the aggregate  number of Shares for which incentive stock options
may be granted under all such plans.



(b) 10%  Stockholder.  If any  employee to whom an  incentive  option is granted
pursuant  to the  provisions  of the Plan is on the date of grant  the  owner of
stock (as determined  under Section 424(d) of the Code) possessing more than 10%
of the total combined voting power of all classes of stock of the Company or any
of its subsidiaries,  then the following special  provisions shall be applicable
to the incentive option granted to such individual:


(i)     The option price per Share subject to such incentive option shall not be
        less  than  110% of the fair  market  value of one  Share on the date of
        grant; and The incentive option  shall  not have a term in excess of
        five (5) years from the date of grant.

(c) Effect of Other Outstanding  Incentive Options.  No incentive option granted
before  January 1, 1987  hereunder  shall be  exercisable  by any optionee while
there is "outstanding," within the meaning of Section 422A(c)(7) of the Code (as
in effect immediately prior to its amendment by the Tax Reform Act of 1986), any
incentive  option or other  incentive  stock  option  which was  granted  to the
optionee before the granting of the incentive  option under this Plan and  which
permits the optionee to purchase stock in (i) the  Company,  (ii) a  corporation
which (at the time of the granting of the incentive  option under this Plan)  is
a parent or subsidiary of the Company, or (iii) a predecessor corporation of any
of such corporations.


9. Terms and  Conditions  of Options.  Options  granted under this Plan shall be
evidenced by stock option  agreements in such form and not inconsistent with the
Plan as the Stock  Option  Committee  shall  approve  from  time to time,  which
agreements shall evidence the following terms and conditions:


(a) Price.  Subject to the condition of  subparagraph  (b)(i) of Paragraph 8, if
applicable,  with respect to each incentive option, the purchase price per Share
of stock payable upon the exercise of each option granted hereunder shall be not
less than 100% of the fair  market  value of the stock on the day the  option is
granted.  With respect to each nonqualified option, the purchase price per Share
payable upon the exercise of each option granted  hereunder  shall be determined
by the Stock Option Committee at the time the option is granted and shall not be
less than 50% of the fair market value of one Share on the date of grant.

(b)  Number of Shares.  Each option agreement shall specify the number of Shares
to which it pertains.

(c) Limitation  on Number of Shares.  The maximum number of shares for which any
one participant may be granted  non-qualified options in any calendar year under
this Plan shall not exceed 500,000 shares.

(d)  Exercise of Options.  Subject to the  conditions  on  incentive  options of
subparagraph (b)(ii) and (c) of Paragraph 8, if applicable, each option shall be
exercisable for the full amount or for any part thereof and at such intervals or
in such  installments as the Stock Option Committee may determine at the time it
grants such option; provided,  however, that no option shall be exercisable with
respect to any Shares  later than ten (10) years  after the date of the grant of
such option.






(e) Notice of Exercise  and  Payment.  An option  shall be  exercisable  only by
delivery of a written  notice to the Stock Option  Committee,  any member of the
Committee,  the  Company's  Treasurer,  or any  other  officer  of  the  Company
designated by the Committee to accept such notices on its behalf, specifying the
number of Shares for which it is  exercised.  If said Shares are not at the time
effectively  registered  under  the  Securities  Act of 1933,  as  amended,  the
optionee  shall  include  with  such  notice a  letter,  in form  and  substance
satisfactory to the Company,  confirming that the Shares are being purchased for
the optionee's  own account for investment and not with a view to  distribution.
Payment  shall  be made in full at the time of  delivery  to the  optionee  of a
certificate or  certificates  covering the number of Shares for which the option
was exercised.  Payment shall be made (i) by cash or check, (ii) if permitted by
the Stock Option Committee,  by delivery and assignment to the Company of Shares
of Company  stock having a fair market value (as  determined by the Stock Option
Committee) equal to the option price,  (iii) [only with respect to optionees who
are officers or directors of the Company (or its  affiliates)  who, by reason of
their  relationship  to the  Company,  would be  subject  to  Section  16 of the
Securities Exchange Act of 1934, as amended in connection with their acquisition
or  disposition  of Common  Stock of the Company (a "Section  16  Person")],  if
permitted  by the Stock  Option  Committee,  by  promissory  note,  or (iv) by a
combination  of (i),  (ii) and (iii) (if  applicable).  The value of the Company
stock for such purpose  shall be its fair market value as of the date the option
is exercised,  as determined in accordance  with procedures to be established by
the Stock Option Committee.
 
 (f) Withholding Taxes;  Delivery of Shares. The Company's obligation to deliver
Shares of Common Stock upon exercise of a  nonqualified  option,  in whole or in
part, shall be subject to the optionee's satisfaction of all applicable federal,
state and local income and employment tax withholding obligations.  The optionee
may satisfy the obligation, in whole or in part, by electing to have the Company
withhold  Shares of Common Stock having a value equal to the amount  required to
be  withheld.  The  value of Shares  to be  withheld  shall be based on the fair
market value of the Shares on the date the amount of tax to be withheld is to be
determined (the "Tax Date"). The optionee's election to have Shares withheld for
this purpose  will be subject to the  following  restrictions:  (1) the election
must be made prior to the Tax Date,  (2) the election must be  irrevocable,  (3)
the election  will be subject to the right of the  Committee to  disapprove  the
election,  and (4) if a participant  is a Section 16 Person,  such election must
comply in all respects with the requirements of Rule 16b-3.


(g)  Non-Transferability.  No  option  shall  be  transferable  by the  optionee
otherwise than by will or the laws of descent or  distribution,  and each option
shall be exercisable during his lifetime only by him.


(h)  Termination  of Options.  Each option shall  terminate and may no longer be
exercised if the optionee ceases for any reason to be a employee of the Company,
or its parent or a subsidiary, except that:


(i) if the optionee's employment shall have terminated for any reason other than
cause,  disability  (as  defined  below) or death,  he may at any time  within a
period of thirty (30) days after such  termination  of  employment  exercise his
option to the  extent  that the  option  was  exercisable  by him on the date of
termination of his employment;




(ii) if the  optionee's   employment  shall  have  been  terminated  because  of
disability  within the meaning of Section  22(e)(3) of the Code, with respect to
incentive  options granted to the optionee, the optionee may, at any time within
a period of one (1) year after such termination of employment, and with  respect
to nonqualified  options granted to the  optionee, the optionee may, at any time
within a period of one year and one  day  after such termination of  employment,
exercise his option to the extent that the option was  exercisable by him on the
date of termination of his employment; and


(iii) if the optionee  dies at a  time when  the option  was exercisable by him,
then his estate, personal representative  or beneficiary to  whom  it  has  been
transferred  pursuant to  paragraph  9(g) hereof may  exercise the option to the
extent the optionee might have exercised it at the time of his death; (a) at any
time within a period of six (6) months  following  his death if the optionee was
not an  employee at the time of his death,  or, (b) in the event his  employment
with the  Company  is  terminated  by his  death,  one (1) year  following  such
termination of employment.  In no case,  however,  may an option be exercised to
any extent by anyone after the date of expiration of the option.


(i) Rights as  Shareholder.  The optionee  shall have no rights as a shareholder
with respect to any Shares covered by his option until the date of issuance of a
stock certificate to him for such Shares.


10.  Stock  Dividends;  Stock  Splits;  Stock  Combinations;  Recapitalizations.
Appropriate  adjustment  shall be made in the maximum number of Shares of Common
Stock  subject to the Plan and in the number,  kind,  and option price of Shares
covered by  outstanding  options  granted  hereunder to give effect to any stock
dividends or other distribution  (which exceeds five percent of the total number
of Shares of Common Stock outstanding at the close of business on the date fixed
for the determination of stockholders entitled to receive such stock dividend or
distribution),  stock splits,  stock combinations,  recapitalizations  and other
similar changes in the capital structure of the Company after the effective date
of the Plan.


11. Merger; Sale of Assets;  Dissolution. In the event of a change of the Common
Stock resulting from a merger or similar  reorganization as to which the Company
is the surviving corporation, the number and kind of Shares which thereafter may
be  optioned  and sold under  this Plan and the  number and kind of Shares  then
subject to options granted hereunder and the price per  share  thereof shall  be
appropriately adjusted in such manner as the  Stock  Option  Committee may deem
equitable to prevent substantial dilution or enlargement of the rights available
or granted hereunder.  Except as otherwise  determined by the Board, a merger or
a similar reorganization  which  the  Company  does  not  survive,  or a sale of
all or substantially  all  of the  assets  of the  Company,  shall  cause every
option outstanding hereunder  to  terminate, to  the  extent not then exercised,
unless any surviving entity agrees to assume the obligations hereunder.

12.Definitions.

(a) The term "key employees" means those executive, administrative,  operational
or managerial  employees who are determined by the Stock Option  Committee to be
eligible for options under this Plan.




(b) The term "option",  unless  otherwise  indicated,  means either an incentive
option or a nonqualified  option.  The term  "options"  refers to both incentive
options or nonqualified options.


(c) The term "optionee"  means a key employee to whom an option is granted under
this Plan.


(d) The term  "parent"  shall  have,  for  purposes  of this Plan,  the  meaning
ascribed to it under Section 424(e) of the Code.

(e) The term  "subsidiary"  shall,  for purposes of this Plan,  have the meaning
ascribed to it under Section 424(f) of the Code.


13.  Termination  or Amendment of Plan. The Board may at any time terminate this
Plan or make such  changes  in or  additions  to the Plan as it deems  advisable
without further action on the part of the shareholders of the Company, provided:

(a) that no such  termination or amendment shall adversely  affect or impair any
then outstanding option without the consent of the optionee holding such option;
and

(b) that any such amendment which:

         (i)   increases the maximum number of Shares subject to this Plan
(subject to the provisions of Section 10),


         (ii) changes the class of persons eligible to participate in this Plan,
or

         (iii)  materially increases the benefits accruing to participants under
this Plan;

shall be subject to approval by the  shareholders  of the Company within one (1)
year from the  effective  date of such  amendment  and shall be null and void if
such approval is not obtained.