EXHIBIT 10 (mm)

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                        AMENDMENT TO EMPLOYMENT AGREEMENT
                         (Dated as of November 5, 1997)

         This Amendment to Employment  Agreement is dated as of November 5, 1997
and  entered  into  between  Data  General   Corporation   (the  "Company")  and
______________________ (the "Executive").

         Reference    is    made   to   that    Employment    Agreement    dated
______________________  between the Executive  and the Company (the  "Employment
Agreement").

         Whereas the parties, for good and sufficient consideration, the receipt
and  sufficiency  of which is hereby  confirmed,  wish to amend  the  Employment
Agreement to clarify the meaning of certain terms used therein;

         Now, therefore, the parties agree as follows:

1.       Subsection  4(b) (ii) of  the  Employment  Agreement is hereby  amended
         by so that it reads in its entirety as follows:

                           (ii) Annual Bonus. In addition to Annual Base Salary,
              the Executive shall be awarded,  for each fiscal year beginning or
              ending during the Employment  Period, an annual bonus (the "Annual
              Bonus") in cash at least  equal to the  greater of (x) the highest
              Annual Bonus  (annualized  for any fiscal year  consisting of less
              than twelve full months or with respect to which the Executive has
              been  employed by the  Company  for less than twelve full  months)
              paid or payable to the Executive by the Company and its affiliated
              companies  in  respect  of  the  three  fiscal  years  immediately
              preceding the fiscal year in which the Effective  Date occurs (the
              "Recent Annual Bonus"),  or (y) 30% of the Executive's Annual Base
              Salary. Each such Annual Bonus shall be paid no later than the end
              of the third  month of the fiscal year next  following  the fiscal
              year for which the Annual Bonus is awarded,  unless the  Executive
              shall elect to defer the receipt of such  Annual  Bonus.  The term
              "Annual Bonus" as used in this  Subsection  4(b) and in Subsection
              6(d) shall  include all amounts  paid as a bonus to the  Executive
              with regard to the applicable fiscal year.



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2.       The first  sentence  of  Subsection  6(a)(ii)(x)(B)  of the  Employment
         Agreement  (beginning,  "If the Executive's  employment ...") is hereby
         amended so that such sentence reads as follows:


              If the  Executive's  employment  is  terminated  by  reason of the
              Executive's  death during the  Employment  Period,  this Agreement
              shall  terminate  without  further  obligations to the Executive's
              legal  representatives  under  this  Agreement,   other  than  the
              following obligations:  (i) payment of the Executive's Annual Base
              Salary   through  the  Date  of  Termination  to  the  extent  not
              theretofore  paid,  (ii) payment of the product of (x) the greater
              of (A) the Annual Bonus paid or payable but for any deferral  (and
              annualized for any fiscal year consisting of less than twelve full
              months or for which the  Executive has been employed for less than
              twelve  full  months)  to the  Executive  for  the  most  recently
              completed  fiscal year during the Employment  Period,  if any, and
              (B) the  highest  Annual  Bonus  (annualized  for any fiscal  year
              consisting  of less than  twelve  full  months or with  respect to
              which the Executive has been employed by the Company for less than
              twelve  full  months)  paid or  payable  to the  Executive  by the
              Company  and its  affiliated  companies  in  respect  of the three
              fiscal years  immediately  preceding  the fiscal year in which the
              Effective Date occurs (such greater amount  hereafter  referred to
              as the "Highest  Annual Bonus") and (y) a fraction,  the numerator
              of which is the number of days in the current  fiscal year through
              the Date of  Termination,  and the denominator of which is 365 and
              (iii)  payment  of any  compensation  previously  deferred  by the
              Executive (together with any accrued interest thereon) and not yet
              paid by the Company and any accrued  vacation  pay not yet paid by
              the Company (the amounts  described in  paragraphs  (i),  (ii) and
              (iii) are hereafter referred to as "Accrued Obligations").


Except as hereby  amended,  the  Employment  Agreement  is hereby  ratified  and
confirmed.

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IN WITNESS  WHEREOF,  the parties have executed this  Amendment  effective as of
November 5, 1997.

DATA GENERAL CORPORATION


By:      ________________________                    ________________________
         Arthur W. DeMelle                           ________________________
         Senior Vice President and
         Chief Financial Officer