ZWEIG DIMENNA PARTNERS L P
SC 13D/A, 1997-11-18
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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549
                                 SCHEDULE 13D

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934

                              (AMENDMENT NO. 1)*
                                            

                         Premisys Communications, Inc.
         -------------------------------------------------------------
                                (Name of Issuer)

                                 Common Stock
              ---------------------------------------------------
                        (Title of Class of Securities)

                                   740584107
                   -----------------------------------------
                                 (CUSIP Number)

      Stuart B. Panish c/o Zweig-DiMenna Associates LLC, 900 Third Avenue
                   New York, New York 10022  (212) 451-1100
- --------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized
                    to Receive Notices and Communications)

                               November 13, 1997
                  -------------------------------------------
            (Date of Event which Requires Filing of this Statement)

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

Check the following box if a fee is being paid with this statement [_]. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).

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

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

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

<PAGE>
 
                                 SCHEDULE 13D

CUSIP No. 740584107


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

        Zweig-DiMenna Special Opportunities, L.P.
        Zweig-DiMenna Partners, L.P.
        Zweig-DiMenna International Limited
        Zweig-DiMenna International Managers, Inc., on behalf of a
         discretionary account       
        Gotham Advisors, Inc., on behalf of a discretionary account

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

3  SEC USE ONLY

4 SOURCE OF FUNDS*  WC

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

6  CITIZENSHIP OR PLACE OF ORGANIZATION
    
        Zweig-DiMenna Special Opportunities, L.P. - Delaware
        Zweig-DiMenna Partners, L.P. - New York    
        Zweig-DiMenna International Limited - British Virgin Islands
        Zweig-DiMenna International Managers, Inc. - Delaware
        Gotham Advisors, Inc. - Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

7  SOLE VOTING POWER
 
        Zweig-DiMenna Special Opportunities, L.P.-229,300
        Zweig-DiMenna Partners, L.P.-374,900
        Zweig-DiMenna International Limited-847,600
        Zweig-DiMenna International Managers, Inc., on behalf of a discretionary
         account-164,700
        Gotham Advisors, Inc., on behalf of a discretionary account-104,300
                
8  SHARED VOTING POWER
        
        0                 

9  SOLE DISPOSITIVE POWER
                  
        Zweig-DiMenna Special Opportunities, L.P.-229,300
        Zweig-DiMenna Partners, L.P.-374,900
        Zweig-DiMenna International Limited-847,600
        Zweig-DiMenna International Managers, Inc., on behalf of a discretionary
         account-164,700
        Gotham Advisors, Inc., on behalf of a discretionary account-104,300

10  SHARED DISPOSITIVE POWER

        0

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        Zweig-DiMenna Special Opportunities, L.P.-229,300
        Zweig-DiMenna Partners, L.P.-374,900
        Zweig-DiMenna International Limited-847,600
        Zweig-DiMenna International Managers, Inc., on behalf of a discretionary
         account-164,700
        Gotham Advisors, Inc., on behalf of a discretionary account-104,300

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                          [_]
                
13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
        
        Total-6.7%
        
        Zweig-DiMenna Special Opportunities, L.P.-0.9%
        Zweig-DiMenna Partners, L.P.-1.5%
        Zweig-DiMenna International Limited-3.3%
        Zweig-DiMenna International Managers, Inc., on behalf of a discretionary
         account-0.6%
        Gotham Advisors, Inc., on behalf of a discretionary account-0.4%

14 TYPE OF REPORTING PERSON*
        
        Zweig-DiMenna Special Opportunities, L.P. - PN
        Zweig-DiMenna Partners, L.P. - PN
        Zweig-DiMenna International Limited - CO
        Zweig-DiMenna International Managers, Inc. - CO
        Gotham Advisors, Inc. - CO

<PAGE>
 
                         SCHEDULE 13D - AMENDMENT NO. 1

     Zweig-DiMenna Special Opportunities, L.P., Zweig-DiMenna International
Limited, Zweig-DiMenna Partners, L.P., Zweig-DiMenna International Managers,
Inc. and Gotham Advisors, Inc. (collectively the "Investors") hereby amend the
Schedule 13D, filed with respect to shares of common stock, par value $0.01 per
share ("Shares") of Premisys Communications, Inc.


ITEM 3  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATIONS

     The first sentence of Item 3 is amended to read as follows:

     "The securities of Premisys Communications, Inc. were purchased at an
aggregate cost of $37,053,039 with the investment capital of Zweig-DiMenna
Special Opportunities, L.P., Zweig-DiMenna International Limited, Zweig-DiMenna
Partners, L.P., the discretionary account managed by Zweig-DiMenna International
Managers, Inc. (the "ZDIM Account") and the discretionary account managed by
Gotham Advisors, Inc. (the "Gotham Account")."


ITEM 5  INTEREST IN SECURITIES OF THE ISSUER

     The answer to Item 5 is amended to read as follows:

     a.   Aggregate number of shares beneficially owned:
<TABLE>
<CAPTION>
 
<S>                                                             <C>                  <C>
            Zweig-DiMenna Special Opportunities, L.P.           -                 229,300
 
            Zweig-DiMenna International Limited                 -                 847,600
 
            Zweig-DiMenna Partners, L.P.                        -                 374,900
 
            ZDIM Account                                        -                 164,700
 
            Gotham Account                                      -                 104,300
 
          Percent of class beneficially owned:
 
            Zweig-DiMenna Special Opportunities, L.P.           -                     0.9%
 
            Zweig-DiMenna International Limited                 -                     3.3%
 
            Zweig-DiMenna Partners, L.P.                        -                     1.5%
 
            ZDIM Account                                        -                     0.6%
 
            Gotham Account                                      -                     0.4%

</TABLE> 
<PAGE>
 
<TABLE> 
<CAPTION> 

 
     b.     Number of shares as to which there is sole power to vote:
<S>                                                             <C>                  <C>  

            Zweig-DiMenna Special Opportunities, L.P.           -                   229,300                                       
                                                                                                                                 
            Zweig-DiMenna International Limited                 -                   847,600                                       
                                                                                                                                 
            Zweig-DiMenna Partners, L.P.                        -                   374,900                                       
                                                                                                                                 
            ZDIM Account                                        -                   164,700                                       
                                                                                                                                 
            Gotham Account                                      -                   104,300                                       
 
          Number of shares as to which there is shared power to vote or to direct the vote:
 
            Zweig-DiMenna Special Opportunities, L.P.           -                         0                                      
                                                                                                                                 
            Zweig-DiMenna International Limited                 -                         0                                      
                                                                                                                                 
            Zweig-DiMenna Partners, L.P.                        -                         0                                       
                                                                                                                                 
            ZDIM Account                                        -                         0                                      
                                                                                                                                 
            Gotham Account                                      -                         0                                     
 
          Number of shares as to which there is sole power to  dispose or to direct the disposition:
 
            Zweig-DiMenna Special Opportunities, L.P.           -                   229,300                                 
                                                                                                                                  
            Zweig-DiMenna International Limited                 -                   847,600                                 
                                                                                                                                  
            Zweig-DiMenna Partners, L.P.                        -                   374,900                                 
                                                                                                                                  
            ZDIM Account                                        -                   164,700                                 
                                                                                                                                  
            Gotham Account                                      -                   104,300                                  
 
          Number of shares as to which there is shared power to dispose or to direct the disposition:
 
            Zweig-DiMenna Special Opportunities, L.P.           -                         0
 
            Zweig-DiMenna International Limited                 -                         0
 
            Zweig-DiMenna Partners, L.P.                        -                         0
</TABLE> 
<PAGE>
 
<TABLE> 
<CAPTION> 
<S>                                                             <C>                                                            <C>  
            ZDIM Account                                        -                                                              0
 
            Gotham Account                                      -                                                              0
</TABLE>

c.   Since October 30, 1997, the date of the Investors' most recent 13D filing,
Zweig-DiMenna Special Opportunities, L.P., Zweig-DiMenna International Limited,
Zweig-DiMenna Partners, L.P., the ZDIM Account and the Gotham Account purchased
the Shares on the open market on the following dates and at the following prices
and in the following amounts:

            ZWEIG-DIMENNA SPECIAL OPPORTUNITIES, L.P.

            DATE         DESCRIPTION OF PURCHASE

            11/12/97       Purchased 6,600 shares at $26.2656 a share

            11/12/97       Purchased 6,600 shares at $25.9250 a share

            11/13/97       Purchased 19,700 shares at $27.1396 a share

            11/13/97       purchased 6,600 shares at $26.2656 a share

            ZWEIG-DIMENNA INTERNATIONAL LIMITED

            DATE         DESCRIPTION OF PURCHASE

            11/12/97       Purchased 24,900 shares at $26.2656 a share

            11/12/97       Purchased 24,900 shares at $25.9250 a share

            11/13/97       Purchased 74,700 shares at $27.1396 a share

            11/13/97       purchased 24,900 shares at $26.2656 a share

            ZWEIG-DIMENNA PARTNERS, L.P.

            DATE         DESCRIPTION OF PURCHASE

            11/12/97       Purchased 10,800 shares at $26.2656 a share

            11/12/97       Purchased 10,800 shares at $25.9250 a share

            11/13/97       Purchased 32,300 shares at $27.1396 a share

            11/13/97       purchased 10,800 shares at $26.2656 a share
<PAGE>
 
            ZDIM ACCOUNT

            DATE         DESCRIPTION OF PURCHASE

            11/12/97       Purchased 4,700 shares at $26.2656 a share

            11/12/97       Purchased 4,700 shares at $25.9250 a share

            11/13/97       Purchased 14,300 shares at $27.1396 a share

            11/13/97       purchased 4,700 shares at $26.2656 a share

            GOTHAM ACCOUNT

            DATE         DESCRIPTION OF PURCHASE

            11/12/97       Purchased 3,000 shares at $26.2656 a share

            11/12/97       Purchased 3,000 shares at $25.9250 a share

            11/13/97       Purchased 9,000 shares at $27.1396 a share

            11/13/97       purchased 3,000 shares at $26.2656 a share

     d.   Not Applicable

     e.   Not Applicable
<PAGE>
 
                                   SIGNATURE


After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Date: November 14, 1997

            ZWEIG-DiMENNA SPECIAL OPPORTUNITIES, L.P.
            By:    Zweig-DiMenna Associates LLC,
                   Managing General Partner


            By:    /s/  Joseph A. DiMenna
                   ----------------------
            Name:   Joseph A. DiMenna
            Title:  A Managing Director of the Managing General Partner

            ZWEIG-DiMENNA INTERNATIONAL LIMITED

            By:     Zweig-DiMenna International Managers, Inc.,
                    Investment Manager


            By:     /s/  Joseph A. DiMenna
                    ----------------------
            Name:   Joseph A. DiMenna
            Title:  Executive Vice President

            ZWEIG-DiMENNA PARTNERS, L.P.
            By:     Zweig-DiMenna Associates LLC, 
                    Managing General Partner

            By:     /s/  Joseph A. DiMenna
                    ----------------------           
            Name:   Joseph A. DiMenna
            Title:  A Managing Director of the Managing General Partner

            ZWEIG-DiMENNA INTERNATIONAL MANAGERS, INC.


            By:    /s/  Joseph A. DiMenna
                   ----------------------
            Name:  Joseph A. DiMenna
            Title: Executive Vice President

            GOTHAM ADVISORS, INC.


            By:    /s/  Joseph A. DiMenna
                   ----------------------
            Name:  Joseph A. DiMenna
            Title: Vice President



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