UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 10-Q



[x] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE
    ACT OF 1934


    For the period ended           June 30, 1996
                         -------------------------------------------------------


                                       OR

[ ] TRANSITION  REPORT  PURSUANT  TO  SECTION  13 OR 15 (d)  OF THE  SECURITIES
    EXCHANGE ACT OF 1934

    For the transition period from ______________ to_____________
    Commission file number  0-14007
                          ---------



                        MCNEIL REAL ESTATE FUND XX, L.P.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)





         California                             33-0050225
- --------------------------------------------------------------------------------
(State or other jurisdiction of                 (I.R.S. Employer
incorporation or organization)                   Identification No.)



             13760 Noel Road, Suite 700, LB70, Dallas, Texas, 75240
- --------------------------------------------------------------------------------
         (Address of principal executive offices)           (Zip code)



Registrant's telephone number, including area code      (214) 448-5800
                                                  ------------------------------



Indicate  by check  mark  whether  the  registrant,  (1) has filed  all  reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during the  preceding  12 months and (2) has been  subject to such  filing
requirements for the past 90 days. Yes X No
                                      ---  ---

                        MCNEIL REAL ESTATE FUND XX, L.P.

                          PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS
- ------- --------------------
                                 BALANCE SHEETS
                                   (Unaudited)

 
                                                                           June 30,          December 31,
                                                                             1996                1995
                                                                       ----------------     --------------
ASSETS    
- ------
Real estate investments:
                                                                                                 
   Land.....................................................           $       699,697      $      699,697
   Buildings and improvements...............................                 6,129,999           6,119,787
                                                                        --------------       -------------
                                                                             6,829,696           6,819,484
   Less:  Accumulated depreciation..........................                (1,262,461)         (1,093,107)
                                                                        --------------       -------------
                                                                             5,567,235           5,726,377

Mortgage loan investments, net of allowance of
   $792,013 at June 30, 1996 and
   December 31, 1995........................................                 3,471,559           3,537,436
Mortgage loan investment - affiliate........................                   733,900             733,900
Cash and cash equivalents ..................................                 3,616,730           3,927,223
Cash segregated for security deposits.......................                    57,494              59,869
Interest and other accounts receivable......................                    74,463              77,480
Escrow deposits.............................................                   203,810             144,844
Deferred borrowing costs, net of accumulated
   amortization of $38,270 and $31,264 at June 30,
   1996 and December 31, 1995, respectively.................                   123,224             130,230
Prepaid expenses and other assets...........................                     6,224               8,590
                                                                        --------------       -------------
                                                                       $    13,854,639      $   14,345,949
                                                                        ==============       =============
LIABILITIES AND PARTNERS' EQUITY (DEFICIT)
- ------------------------------------------

Mortgage note payable, net..................................           $     2,738,970      $    2,760,961
Accounts payable and other accrued expenses.................                    50,143             120,293
Accrued property taxes......................................                   194,738             123,530
Payable to affiliates.......................................                    37,195              32,849
Deferred revenue............................................                   167,163             170,475
Security deposits and deferred rental revenue...............                    55,641              58,213
                                                                        --------------       -------------
                                                                             3,243,850           3,266,321
                                                                        --------------       -------------

Partners' equity (deficit):
   Limited partners - 60,000 limited partnership units
     authorized; 49,512 limited partnership units issued
     and outstanding at June 30, 1996 and December 31, 1995.                10,929,508          11,399,658
   General Partner..........................................                  (318,719)           (320,030)
                                                                        --------------       -------------
                                                                            10,610,789          11,079,628
                                                                        --------------       -------------
                                                                       $    13,854,639      $   14,345,949
                                                                        ==============       =============


The  financial  information  included  herein has been  prepared  by  management
without audit by independent public accountants.

                 See accompanying notes to financial statements.

                        McNEIL REAL ESTATE FUND XX, L.P.

                            STATEMENTS OF OPERATIONS
                                   (Unaudited)



                                           Three Months Ended                      Six Months Ended
                                                  June 30,                              June 30,
                                      ---------------------------------    ---------------------------------
                                          1996               1995               1996                1995
                                      --------------     --------------    --------------     --------------
Revenue:
                                                                                             
   Rental revenue................     $      345,660     $      335,573    $      708,567     $      664,556
   Interest income on mortgage
     loan investments............             70,843             72,954           141,857            141,174
   Interest income on mortgage
     loan investment - affiliate.             15,306             15,305            30,610             30,442
   Other interest income.........             46,484             57,972            93,314            108,425
                                       -------------      -------------     -------------      -------------
     Total revenue...............            478,293            481,804           974,348            944,597
                                       -------------      -------------     -------------      -------------

Expenses:
   Interest......................             62,618             61,585           125,499            125,006
   Depreciation..................             84,728             81,207           169,354            162,414
   Property taxes................             36,900             46,788            84,976             93,576
   Personnel costs...............             33,740             35,775            70,724             85,318
   Utilities.....................             18,221             21,088            37,931             41,421
   Repairs and maintenance.......             30,915             27,476            62,050             57,259
   Property management
     fees - affiliates...........             16,931             17,343            33,816             32,843
   Other property operating
     expenses....................             24,107             22,753            42,841             42,424
   General and administrative....             19,986             25,913            48,085             42,523
   General and administrative -
     affiliates..................             84,714             96,094           167,936            191,573
                                       -------------      -------------     -------------      -------------
     Total expenses..............            412,860            436,022           843,212            874,357
                                       -------------      -------------     -------------      -------------

Net income.......................     $       65,433     $       45,782    $      131,136     $       70,240
                                       =============      =============     =============      =============

Net income allocable
   to limited partners...........     $       64,779     $       45,325    $      129,825     $       69,538
Net income allocable
   to General Partner............                654                457             1,311                702
                                       -------------      -------------     -------------      -------------
Net income.......................     $       65,433     $       45,782    $      131,136     $       70,240
                                       =============      =============     =============      =============

Net income per limited
   partnership unit..............     $         1.31     $          .92    $         2.62     $         1.40
                                       =============      =============     =============      =============

Distributions per limited
   partnership unit..............     $            -     $            -    $        12.12     $         5.05
                                       =============      =============     =============      =============


The  financial  information  included  herein has been  prepared  by  management
without audit by independent public accountants.

                 See accompanying notes to financial statements.



                        MCNEIL REAL ESTATE FUND XX, L.P.

                    STATEMENTS OF PARTNERS' EQUITY (DEFICIT)
                                   (Unaudited)

                 For the Six Months Ended June 30, 1996 and 1995




                                                                                                 Total
                                                   General                 Limited               Partners'
                                                   Partner                 Partners              Equity
                                                 ---------------         ---------------       ---------------
                                                                                                 
Balance at December 31, 1994..............       $     (320,671)         $   11,586,184        $   11,265,513

Net income................................                  702                  69,538                70,240

Distributions.............................                    -                (250,001)             (250,001)
                                                  -------------           -------------         -------------

Balance at June 30, 1995..................       $     (319,969)         $   11,405,721        $   11,085,752
                                                  =============           =============         =============


Balance at December 31, 1995..............       $     (320,030)         $   11,399,658        $   11,079,628

Net income................................                1,311                 129,825               131,136

Distributions.............................                    -                (599,975)             (599,975)
                                                  -------------           -------------         -------------

Balance at June 30, 1996..................       $     (318,719)         $   10,929,508        $   10,610,789
                                                  =============           =============         =============









The  financial  information  included  herein has been  prepared  by  management
without audit by independent public accountants.

                 See accompanying notes to financial statements.











                        MCNEIL REAL ESTATE FUND XX, L.P.

                            STATEMENTS OF CASH FLOWS
                                   (Unaudited)

                Increase (Decrease) in Cash and Cash Equivalents



                                                                               Six Months Ended
                                                                                   June 30,
                                                                -------------------------------------------
                                                                       1996                      1995
                                                                -------------------        ----------------
Cash flows from operating activities:
                                                                                                 
   Cash received from tenants........................           $          721,380         $       652,466
   Cash paid to suppliers............................                     (331,385)               (285,624)
   Cash paid to affiliates...........................                     (197,406)               (220,515)
   Interest received.................................                      229,412                 275,641
   Interest received from affiliates.................                       24,443                  24,443
   Interest paid.....................................                     (114,847)               (116,861)
   Property taxes paid...............................                      (13,768)                (31,586)
   Property taxes escrowed...........................                      (58,200)                (68,504)
                                                                 -----------------          --------------
Net cash provided by operating activities............                      259,629                 229,460
                                                                 -----------------          --------------

Cash flows from investing activities:
   Additions to real estate investments..............                      (10,212)                (32,555)
   Collection of principal on mortgage loan
     investments.....................................                       65,877                  81,958
                                                                 -----------------          --------------
Net cash provided by investing activities............                       55,665                  49,403
                                                                 -----------------          --------------

Cash flows from financing activities:
   Principal payments on mortgage note payable.......                      (25,812)                (23,799)
   Distributions paid................................                     (599,975)               (250,001)
                                                                 -----------------          --------------
Net cash used in financing activities................                     (625,787)               (273,800)
                                                                 -----------------          --------------

Net increase (decrease) in cash and
   cash equivalents..................................                     (310,493)                  5,063

Cash and cash equivalents at beginning of
   period............................................                    3,927,223               3,734,020
                                                                 -----------------          --------------

Cash and cash equivalents at end of period...........           $        3,616,730         $     3,739,083
                                                                 =================          ==============



The  financial  information  included  herein has been  prepared  by  management
without audit by independent public accountants.

                 See accompanying notes to financial statements.


                        MCNEIL REAL ESTATE FUND XX, L.P.

                            STATEMENTS OF CASH FLOWS
                                   (Unaudited)

              Reconciliation of Net Income to Net Cash Provided by
                              Operating Activities




                                                                              Six Months Ended
                                                                                   June 30,
                                                                  -----------------------------------------
                                                                        1996                     1995
                                                                  -----------------       -----------------

                                                                                                 
Net income...........................................             $        131,136        $         70,240
                                                                   ---------------         ---------------

Adjustments  to  reconcile   net  income  to  net  
   cash  provided  by  operating activities:
   Depreciation......................................                      169,354                 162,414
   Amortization of deferred borrowing costs..........                        7,006                   5,347
   Amortization of discount on mortgage note
     payable.........................................                        3,821                   2,960
   Changes in assets and liabilities:
     Cash segregated for security deposits...........                        2,375                 (19,180)
     Interest and other accounts receivable..........                        3,017                  (7,129)
     Escrow deposits.................................                      (58,966)                 44,566
     Prepaid expenses and other assets...............                        2,366                   6,566
     Accounts payable and other accrued
       expenses......................................                      (70,150)                (23,002)
     Accrued property taxes..........................                       71,208                 (50,226)
     Payable to affiliates...........................                        4,346                   3,901
     Deferred revenue................................                       (3,312)                 25,941
     Security deposits and deferred rental
       revenue.......................................                       (2,572)                  7,062
                                                                   ---------------          --------------

       Total adjustments.............................                      128,493                 159,220
                                                                   ---------------          --------------

Net cash provided by operating activities............             $        259,629         $       229,460
                                                                   ===============          ==============







The  financial  information  included  herein has been  prepared  by  management
without audit by independent public accountants.

                 See accompanying notes to financial statements.


                        MCNEIL REAL ESTATE FUND XX, L.P.

                          Notes to Financial Statements
                                  June 30, 1996
                                   (Unaudited)

NOTE 1.
- -------

McNeil  Real  Estate  Fund  XX,  L.P.  (the  "Partnership"),  formerly  known as
Southmark  Income  Investors,  Ltd., was organized on July 19, 1984 as a limited
partnership  under the  provisions of the  California  Revised  Uniform  Limited
Partnership Act. The general partner of the Partnership is McNeil Partners, L.P.
(the "General Partner"), a Delaware limited partnership,  an affiliate of Robert
A. McNeil  ("McNeil").  The principal  place of business for the Partnership and
the General Partner is 13760 Noel Road, Suite 700, Dallas, Texas 75240.

In the opinion of management,  the financial  statements reflect all adjustments
necessary for a fair  presentation of the Partnership's  financial  position and
results  of  operations.  All  adjustments  were of a normal  recurring  nature.
However,  the results of  operations  for the six months ended June 30, 1996 are
not  necessarily  indicative  of the results to be expected  for the year ending
December 31, 1996.

NOTE 2.
- -------

The  financial  statements  should  be read in  conjunction  with the  financial
statements  contained in the  Partnership's  Annual  Report on Form 10-K for the
year  ended  December  31,  1995,  and the  notes  thereto,  as  filed  with the
Securities and Exchange  Commission,  which is available upon request by writing
to McNeil Real Estate Fund XX, L.P.,  c/o McNeil Real Estate  Management,  Inc.,
Investor Services, 13760 Noel Road, Suite 700, Dallas, Texas 75240.

NOTE 3.
- -------

The  Partnership  pays property  management fees equal to 5% of the gross rental
receipts for its properties to McNeil Real Estate Management,  Inc.  ("McREMI"),
an affiliate of the General Partner, for providing property management services.

The  Partnership  reimburses  McREMI  for  its  costs,  including  overhead,  of
administering the Partnership's affairs.

The  Partnership  is paying an asset  management  fee  which is  payable  to the
General  Partner.  Through 1999, the asset management fee is calculated as 1% of
the  Partnership's  tangible asset value.  Tangible asset value is determined by
using the greater of (i) an amount calculated by applying a capitalization  rate
of 9% to the annualized net operating  income of each property,  (ii) a value of
$10,000 per apartment  unit or (iii) on 1130  Sacramento,  the net book value of
the  property  is used to arrive  at the  property  tangible  asset  value.  The
property  tangible  asset  value is then  added to the book  value of all  other
assets excluding  intangible items. The fee percentage  decreases  subsequent to
1999.






Compensation  and  reimbursements  paid to or  accrued  for the  benefit  of the
General Partner and its affiliates are as follows:

                                                       Six Months Ended
                                                          June 30,
                                                  ------------------------
                                                    1996            1995
                                                  ---------      ---------

Property management fees....................      $  33,816      $  32,843
Charged to general and administrative -
   affiliates:
   Partnership administration...............         81,607        106,249
   Asset management fee.....................         86,329         85,324
                                                   --------       --------
                                                  $ 201,752      $ 224,416
                                                   ========       ========

Payable to affiliates at June 30, 1996 and December 31, 1995 consisted primarily
of unpaid  property  management  fees,  Partnership  general and  administrative
expenses  and  asset  management  fees  and  are due and  payable  from  current
operations.

ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
- -------   ---------------------------------------------------------------
          RESULTS OF OPERATIONS
          ---------------------

FINANCIAL CONDITION
- -------------------

There has been no  significant  change in the  operations  of  Sterling  Springs
Apartments or 1130 Sacramento Condominiums since December 31, 1995.

The Partnership reported net income of $131,136 for the first six months of 1996
as compared  to net income of $70,240  for the same period in 1995.  Revenues in
1996  increased to $974,348 from $944,597 in 1995,  while expenses were $843,212
in 1996 as compared to $874,357 in 1995.

Net cash provided by operating  activities was $259,629 for the six months ended
June 30,  1996, a change from the  $229,460  provided  during the same six month
period in 1995.

The  Partnership  expended  $10,212 for capital  improvements,  made  $25,812 in
principal  payments on its  mortgage  note  payable,  and  collected  $65,877 of
principal on mortgage loan investments.  After  distributions of $599,975 to the
limited partners, cash and cash equivalents totaled $3,616,730 at June 30, 1996,
a net decrease of $310,493 from the balance at December 31, 1995.

RESULTS OF OPERATIONS
- ---------------------

Revenue:

Total revenue decreased by $3,511 and increased by $29,751 for the three and six
month periods ended June 30, 1996, respectively, as compared to the same periods
in 1995. The overall  increase was mainly due to an increase in rental  revenue,
as discussed below.


Rental revenue for the three and six month periods ended June 30, 1996 increased
by $10,087 and $44,011,  respectively,  as compared to the same periods in 1995.
The  increase  was  primarily  due to an  increase  in rental  rates at Sterling
Springs Apartments in July 1995 and again in March 1996.

Other  interest  income  decreased  by $11,488 and $15,111 for the three and six
month periods ended June 30, 1996, respectively, as compared to the same periods
in 1995.  The  decrease  was the  result of a  decrease  in cash  available  for
short-term  investment,  mainly due to the payment of  distributions  to limited
partners.

Expenses:

Total expenses for the three and six month periods ended June 30, 1996 decreased
by $23,162 and $31,145,  respectively,  as compared to the same periods in 1995.
The  decrease  was  due  to a  decrease  in  personnel  costs  and  general  and
administrative  -  affiliates,  partially  offset by an  increase in general and
administrative expenses, as discussed below.

Personnel  costs  decreased  by $2,035 and  $14,594 for the three and six months
ended June 30, 1996, respectively,  as compared to the same periods in 1995. The
decrease was mainly due to a worker's compensation insurance refund received for
Sterling  Springs  Apartments;  the result of an audit performed on prior years'
workers' compensation insurance.

General and administrative  expense decreased by $5,927 for the three months and
increased  by $5,562 for the six months  ended June 30,  1996 as compared to the
same periods in 1995.  The overall  increase  was mainly due to the  Partnership
incurring  approximately  $15,000  of  costs  in 1996  to  defend  class  action
litigation.  This increase was partially  offset by a decrease in legal expenses
in the second  quarter of 1996. A greater amount of legal expenses were incurred
in 1995 relating to the  modification of the Idlewood and Lakeland Nursing Homes
notes receivable.

General and administrative - affiliates decreased by $11,380 and $23,637 for the
three and six months ended June 30, 1996, respectively,  as compared to the same
period in 1995.  The decrease was mainly due to a decrease in overhead  expenses
allocated to the Partnership by McREMI.

LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

The Partnership  generated  $259,629 through operating  activities for the first
six months of 1996 as compared to $229,460 for the first six months of 1995. The
increase  in 1996 was mainly due to an increase in cash  received  from  tenants
(see discussion of increase in rental revenue, above).

Short-term liquidity:

At June 30, 1996, the Partnership  held cash and cash equivalents of $3,616,730.
This balance provides a reasonable level of working capital for the Partnerships
immediate needs in operating its properties.








In 1996,  operations of Sterling  Springs  Apartments  and 1130  Sacramento  are
expected  to  provide  sufficient  positive  cash  flow for  normal  operations.
Management  will perform  routine  repairs and  maintenance on the properties to
preserve  and  enhance  their  value  and  competitiveness  in the  market.  The
Partnership has budgeted to spend approximately  $38,000 on capital improvements
to its  properties in 1996,  which are expected to be funded from  operations of
the properties.

For 1996,  management  expects that cash from  operations of its  properties and
principal and interest collections on the mortgage loan investments,  along with
the  present  balance  of  cash  and  cash  equivalents  held,  will  allow  the
Partnership to meet its obligations as they come due.

The  Partnership  distributed  $599,975  to the  limited  partners  in the first
quarter of 1996. The Partnership anticipates making additional  distributions in
the third quarter of 1996 totaling $600,000 to the limited partners of record as
of August 1, 1996.


Long-term liquidity:

Only one property,  Sterling  Springs  Apartments,  is encumbered  with mortgage
debt. The mortgage on this property is not due until 2003.

In the event that the Partnership acquires ownership of other properties through
foreclosure, the cash and cash equivalent balances presently held will provide a
source for the maintenance and improvement of the properties. Because the timing
and number of  properties  which may be  foreclosed  is  uncertain,  there is no
assurance that the balances presently held will be sufficient for needed capital
improvements.  At  present,  there are no  commitments  nor any known  needs for
improvements to the properties securing the Partnership's loans. The Partnership
has no existing lines of credit from outside sources.

The General  Partner has  established a revolving  credit facility not to exceed
$5,000,000 in the aggregate  which is available on a "first-come,  first-served"
basis  to  the  Partnership  and  other  affiliated  partnerships,   if  certain
conditions are met.  Borrowings  under the facility may be used to fund deferred
maintenance,  refinancing  obligations  and working  capital needs.  There is no
assurance that the Partnership will receive any funds under the facility because
no amounts are reserved  for any  particular  partnership.  As of June 30, 1996,
$4,082,159  remained  available  for  borrowing  under  the  facility;  however,
additional  funds could become  available as other  partnerships  repay existing
borrowings. This commitment will terminate on March 30, 1997.

Another possible source of funds is the sale of the Partnership's  mortgage loan
investments or properties securing the Partnership's  mortgage loans. Such sales
are  possibilities  only,  and  since  the  Partnership  does  not  control  the
properties  securing  its  loans,  sales of those  properties  may occur only if
initiated by the  borrower or in the event of  foreclosure  by the  Partnership.
There is no  assurance  that any sales can be  contracted  or closed to coincide
with the  Partnership's  future cash needs.  For the long term, the  Partnership
will  remain  dependent  on  operations  of the  properties  it  owns  or of the
properties securing its loans as the primary source of debt repayment, until the
properties can be sold.






                           PART II. OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS
- -------  -----------------

1)   HCW Pension Real Estate Fund, Ltd. et al. v. Ernst & Young,  BDO Seidman et
     al. (Case  #92-06560-A).  This suit was filed on behalf of the  Partnership
     and other affiliated  partnerships  (the "Affiliated  Partnerships") on May
     26,  1992,  in the 14th  Judicial  District  Court of  Dallas  County.  The
     petition sought recovery against the Partnership's former auditors, Ernst &
     Young,  for  negligence  and  fraud in  failing  to  detect  and/or  report
     overcharges of fees/expenses  by Southmark  Corporation ("Southmark"),  the
     former general partner. The former auditors   initially  asserted  counter-
     claims  against the Affiliated  Partnerships   based on alleged  fraudulent
     misrepresentations  made to the  auditors  by  the  former   management  of
     the    Affiliated   Partnerships  (Southmark)  in   the   form   of  client
     representation  letters executed and delivered to the auditors by Southmark
     management. The counterclaims sought recovery of attorneys'  fees and costs
     incurred in  defending  this action. The counterclaims were later dismissed
     on appeal, as discussed below.

     The trial court granted summary judgment  against the Partnership  based on
     the statute of limitations; however, on appeal, the Dallas Court of Appeals
     reversed   the  trial  court  and   remanded   for  trial  the   Affiliated
     Partnerships'  fraud claims against Ernst & Young.  The Texas Supreme Court
     denied Ernst & Young's  application  for writ of error on January 11, 1996.
     The Partnership is continuing to pursue vigorously its claims against Ernst
     & Young. Trial is set for the week of October 14, 1996; however,  the final
     outcome of this litigation cannot be determined at this time.

Two class action  lawsuits  styled Robert Lewis vs. McNeil  Partners,  L.P., et.
al.,  filed  in the  District  Court  of  Dallas  County,  Texas,  and  James F.
Schofield,  et. al. vs.  McNeil  Partners,  L.P.,  et. al.,  filed in the United
States District  Court,  Southern  District of New York,  have been  voluntarily
dismissed without prejudice by the respective plaintiffs in such actions.

ITEM 5.  OTHER INFORMATION
- -------  -----------------

On August 5, 1996, High River Limited  Partnership ("High River"), a partnership
controlled  by Carl Icahn  ("Icahn"),  and  certain  Icahn's  affiliates,  filed
documents with the Securities and Exchange Commission disclosing that High River
had entered into a letter  agreement dated August 2, 1996 with the attorneys for
the plaintiffs in the case styled James F. Schofield,  et. al. ("Plaintiffs") v.
McNeil  Partners,  L.P.,  et. al. The letter  agreement  provided,  among  other
things, that (i) High River will commence, as soon as possible,  but in no event
more than six months, a tender offer for any and all of the outstanding Units of
the Partnership and other  affiliated  partnerships  (the  "Partnerships")  at a
price that is not less than 75% of the estimated  liquidation value of the Units
(as determined by utilizing the same  methodology that was used to determine the
liquidation  values in High River's previous tender offers for the Partnerships,
as previously disclosed),  which tender offer may be subject to such other terms
and  conditions  as High River  determines in its sole  discretion;  (ii) in the



event that High River  attains  the  position  of general  partner in any of the
Partnerships:  (a) High River  will take all  actions  necessary  to cause a 25%
reduction  of fees of such  Partnerships,  (b) High  River  will not cause  such
Partnerships  to take any action to discontinue  the litigation  with respect to
receivable claims and (c) High River and Plaintiffs'  counsel will in good faith
execute an  appropriate  Stipulation  of Settlement  based upon the terms of the
letter agreement,  which stipulation shall not include a settlement or provide a
release  of the  receivable  claims;  and  (iii)  from and after the date of the
letter  agreement,  Plaintiffs'  counsel  agreed  they will not  enter  into any
settlement of the claims  asserted in such  litigation that does not provide for
all consideration contained in a demand letter dated June 24, 1996.

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K
- -------  --------------------------------

(a)      Exhibits.

         Exhibit
         Number                     Document Description
         -------                    --------------------

         4.                         Amended  and  Restated  Limited  Partnership
                                    Agreement  dated  March 30,  1992. (Incorpo-
                                    rated  by reference to the Current Report of
                                    the  registrant on  Form 8-K dated March 30,
                                    1992, as filed on April 10, 1992).

         11.                        Statement   regarding   computation  of  Net
                                    Income per  Limited  Partnership  Unit:  Net
                                    income (loss) per limited  partnership  unit
                                    is computed by  dividing  net income  (loss)
                                    allocated  to the  limited  partners  by the
                                    weighted    average    number   of   limited
                                    partnership  units  outstanding.   Per  unit
                                    information   has  been  computed  based  on
                                    49,512 limited partnership units outstanding
                                    in 1996 and 1995.

         27.                        Financial   Data   Schedule  for the quarter
                                    ended June 30, 1996.

(b)      Reports on Form 8-K.  There were no reports on Form 8-K filed during 
         the quarter ended June 30, 1996.






                        MCNEIL REAL ESTATE FUND XX, L.P.

                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized:



                                McNEIL REAL ESTATE FUND XX, L.P.

                                By:  McNeil Partners, L.P., General Partner

                                     By: McNeil Investors, Inc., General Partner



August 14, 1996                      By: /s/  Donald K. Reed
- -------------------------               ---------------------------------------
Date                                    Donald K. Reed
                                        President and Chief Executive Officer




August 14, 1996                      By: /s/  Ron K. Taylor
- -------------------------                --------------------------------------
Date                                     Ron K. Taylor
                                         Acting Chief Financial Officer of
                                         McNeil Investors, Inc.




August 14, 1996                      By: /s/  Carol A. Fahs
- -------------------------                --------------------------------------
Date                                     Carol A. Fahs
                                         Chief Accounting Officer of McNeil 
                                         Real Estate Management, Inc.