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PAT.DOC -- Changes from V4(315) to V5(350)
October 1981






























COPYRIGHT (C) 1976,1979,1982 BY
DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.


THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND  COPIED
ONLY  IN  ACCORDANCE  WITH  THE  TERMS  OF  SUCH  LICENSE AND WITH THE
INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR  ANY  OTHER
COPIES  THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF  THE  SOFTWARE  IS  HEREBY
TRANSFERRED.

THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE  WITHOUT  NOTICE
AND  SHOULD  NOT  BE  CONSTRUED  AS  A COMMITMENT BY DIGITAL EQUIPMENT
CORPORATION.

DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR  RELIABILITY  OF  ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.

PAT5.DOC                                                        Page 2


PAT.DOC -- Changes from V4(315) to V5(350)
October 1981



1.0  SUMMARY

PA1050 version 5(350) is the TOPS-10 UUO simulator produced  from  the
file  PAT.MAC.   It  gets mapped into the address space of any program
that executes a TOPS-10 UUO.  Its function is to intercept all TOPS-10
UUO's and simulate them with the appropriate TOPS-20 JSYS's.

PA1050 version 5(350) runs under the TOPS-20 Release 5 monitor.



2.0  EXTERNAL CHANGES

Magtape OPEN byte size  adjusted  to  correspond  to  OPEN  conditions
(Labeled/Unlabeled,Format,Hardware data mode).  See code for details.

FILOPS implemented (0 -> 15).



3.0  KNOWN BUGS AND DEFICIENCIES

PA1050 is intended to be used to support  only  the  standard  TOPS-20
software  (FORTRAN,  COBOL,  etc.).   PA1050  reflects TOPS-10 version
5.06.



4.0  INSTALLATION INSTRUCTIONS


4.1  Files Needed to Run PA1050

PA1050 consists of one file, PA1050.EXE.


4.2  Instructions for Loading and Installing

Mount the tape labeled  Installation  Tape  on  MTA0:   and  type  the
following commands:

     SKIP MTA0:5 FILES
     R DUMPER
     TAPE MTA0:
     REWIND
     DENSITY 1600-BPI
     SKIP 1
     RESTORE <*>PA1050.EXE (TO) SYS:*.*.-1
     REWIND

PAT5.DOC                                                        Page 3


4.3  Files Needed to Build PA1050

PA1050 is built from the following file:

     PAT.MAC

In addition, the following files must be on SYS:

     MACREL.REL
     MACSYM.UNV
     MONSYM.UNV


4.4  Instructions for Building PA1050

Mount the tape labeled  Distribution  Tape  on  MTA0:   and  type  the
following commands:

     R DUMPER
     TAPE MTA0:
     REWIND
     DENSITY 1600-BPI
     SKIP 1
     RESTORE <*>*.* (TO) <self>*.*
     REWIND
     ^C
     SUBMIT PAT/TIME:1:0:0


4.5  Special Considerations

None.



5.0  INTERNAL CHANGES

Refer to PAT.TCO for detailed information about internal changes.



6.0  SUGGESTIONS

None.



[End of PAT5.DOC]