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                                                                  Exhibit 10.89

                               PROMISSORY NOTE

Principal Sum: $45,080,000                           Date: as of August 15, 1997
Interest Rate: 7.77%                            Maturity Date: September 1, 2000

            FOR VALUE RECEIVED, DIHC BERKELEY BACK BAY CORP. ("Maker"), a
Georgia corporation, promises to pay DIHC FINANCE CORPORATION ("Payee"), a
Georgia corporation having an office at 200 Galleria Parkway N.W., Suite 2000,
Atlanta, Georgia 30339, or order, or at such other place as may be designated in
writing by the holder hereof, the principal sum of FORTY FIVE MILLION EIGHTY
THOUSAND AND NO/100 DOLLARS ($45,080,000), in lawful money of the United States
of America, with interest thereon from the date hereof at the rate of seven and
seventy-seven one-hundredths percent (7.77 %) per annum but in no event in
excess of the then maximum legal rate in Georgia for purposes of determining
usury.

            Installments of interest only shall be due and payable monthly in
arrears commencing on the first day after the first full calendar month
following the date hereof and continuing on the first day of each and every
calendar month thereafter ensuing until the entire principal sum hereof, all
accrued interest and all other sums due and payable hereunder shall be fully
paid. The entire unpaid principal balance, together with all accrued and unpaid
interest and
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all other sums due and payable hereunder, shall be due and payable on September
1, 2000 (the "Maturity Date").

            Upon the request of Payee, Maker shall deliver to Payee a pledge of
Maker's partnership interest in DIHC Berkeley Associates, to be secured by a
pledge, collateral assignment, UCC-1 financing statement, security agreement and
any other security documents (collectively, the "Security Agreement") reasonably
requested by Payee.

            Upon any default hereunder and the continuance of such default for a
period of ten (10) days after the due date or any default under the Security
Agreement, if any, and the continuance of such default after the expiration date
of any applicable grace period under any Security Agreement, Payee shall have
the right, at its option, to require Maker to immediately pay the entire
principal and interest remaining due and unpaid hereunder, together with all
costs and expenses incurred in connection with the collection or attempted
collection hereof and the protection of the security hereof or thereof,
including, without limitation, attorneys' fees and disbursements, whether or not
suit is instituted. Interest shall accrue on such amounts from the date of such
default at the Involuntary Rate (as hereinafter defined) compounded monthly
until the date such amounts are paid. The "Involuntary Rate" shall be an annual
rate equal to five percent (5 %) in excess of the rate charged from time to time
by Morgan Guaranty Trust Company of New York on short term (90 day) unsecured
loans to its preferred customers but in no event in excess of the then maximum
legal rate in Georgia for purposes of determining usury.

            Maker agrees to be bound to the extent provided in any Security
Agreement and waives and renounces any and all exemption rights and the benefit
of all valuation and appraisal privileges as against the indebtedness evidenced
hereby or any renewal or extension thereof


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except as set forth in any Security Agreement, waives demand, protest, notice of
nonpayment, and any and all lack of diligence or delays in the collection or
enforcement hereof, and expressly consents to any extension of time, release of
any party liable for the indebtedness evidenced hereby, release of any of the
security of this Note, acceptance of other security thereof, or any other
indulgence or forbearance whatsoever by Payee, any one or all of which may be
made without notice to Maker or such released party or any other party.

            This Note may be prepaid in whole or in part without fee or penalty
(but with accrued interest on the amount so prepaid) upon any date for the
payment of interest, upon not less than ten (10) days prior written notice by
Maker to Payee.

            The parties hereto have intended in good faith to comply with all
applicable usury laws. Notwithstanding anything to the contrary contained in
this Note or any other instrument evidencing, securing, or relating to this
Note, Maker shall not be obligated or required to pay interest at a rate which
would subject Payee to either criminal or civil liability. If, by the terms of
this Note or any other instrument evidencing, securing, or relating to this
Note, Maker at any time is required or obligated to pay interest on the
principal amount of this Note in an amount or at a rate in excess of the
applicable legal maximum, the interest due to Payee shall immediately and
automatically reduced to such maximum rate, the interest payable shall be
computed at such maximum rate, and all prior interest payments in excess of such
lawful maximum shall be immediately and automatically applied, and shall be
deemed to have been treated as having been applied at the time of receipt, in
reduction of the principal balance due under this Note.

            The entire unpaid principal balance, together with all accrued and
unpaid interest and all other sums due and payable hereunder, shall become
immediately due and payable at the


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option of Payee upon the happening of any event by which this Note shall or may
become due and payable under the terms of any Security Agreement, subject to any
applicable notice, grace and/or cure period(s) thereunder.

            No delays on the part of Payee in exercising any right hereunder or
under any security Agreement or any other agreement further evidencing or
securing this Note shall operate as a waiver thereof or preclude the exercise
thereof at any time during the continuance of any default or during the
continuance of a subsequent default.

            This Note may not be modified or terminated orally. This Note may be
assigned by Payee, in its sole discretion, without the consent of Maker. This
Note shall be construed and enforced in accordance with the law of Georgia.

            IN WITNESS WHEREOF, Maker has executed this Note as of the 15th of
August, 1997.

                                          DIHC BERKELEY BACK BAY CORP.

                                          By: /s/ Robert T. Sorrentino
                                              ---------------------------------
                                              Robert T. Sorrentino
                                              Vice President


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COUNTY OF NEW YORK )
                   : ss.:
STATE OF NEW YORK  )

            BEFORE ME the undersigned authority personally appeared on this day
Robert T. Sorrentino, to me personally known, who being by me duly sworn did
depose and say that he is the Vice President of DIHC Berkeley Back Bay Corp.,
the corporation described in and which executed the foregoing instrument; that
he acknowledged execution of said instrument to be the voluntary act and deed of
said corporation by order of the Board of Directors of said corporation.

            WITNESS my hand and official seal this 15th day of August, 1997.

                                        /s/ Russell Wohl
                                        ---------------------------------
                                        Notary Public

Russell Wohl
Notary Public State of New York
No. 41-4977236
Qualified in Queens County
Commission Expires Jan 28, 1999