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.;17-FEB-77
\\
.LM0;.RM70;.F;.J;.SP1;.TS5
.FLAG CAP
<BACKUP.DOC -- ^CHANGES FROM ^V1 TO ^V2(216)
.BR
^OCTOBER 1975
.FG30
^COPYRIGHT (^C) 1975,1976,1977
.BR
^DIGITAL ^EQUIPMENT ^CORPORATION, ^MAYNARD, ^MASS.
.B 2
^THIS SOFTWARE IS FURNISHED UNDER A LICENSE FOR USE ONLY ON A
SINGLE COMPUTER SYSTEM AND MAY BE COPIED ONLY 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 EXCEPT FOR USE ON SUCH SYSTEM AND TO ONE WHO
AGREES TO THESE LICENSE TERMS. ^TITLE TO AND OWNERSHIP OF THE
SOFTWARE SHALL AT ALL TIMES REMAIN IN ^^DEC\\.
.B 1
^THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT
NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ^DIGITAL
^EQUIPMENT ^CORPORATION.
.B 1
^^DEC\\ ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY ^^DEC\\.
.T <BKP2.DOC
.PG
<BACKUP.DOC -- ^CHANGES FROM ^V1 TO ^V2(216)
.BR
^OCTOBER 1975
.B3.LM0
1.0##<SUMMARY
.B1
^THIS IS THE FIRST FIELD RELEASE OF ^^BACKUP\\, A PROGRAM FOR
 TRANSFERING FILES BETWEEN DISK AND MAGNETIC TAPE.
^THIS VERSION OF ^^BACKUP\\ IS INTENDED TO REPLACE ^^FAILSAFE\\
AS THE SYSTEM PROGRAM FOR PROVIDING BACKUP STORAGE OF THE DISK
FILE STUCTURE SYSTEM ON MAGNETIC TAPE.
.B1
^VERSION 2 OF ^^BACKUP\\ MUST BE LOADED WITH ^^SCAN\\ VERSION 7^B,
^^WILD\\ VERSION 7^A, AND FIELD IMAGE VERSIONS OF ^^HELPER\\ AND ^^ENDECR\\.
^^BACKUP\\ RUNS ON ALL SUPPORTED MONITORS, AND HAS BEEN TESTED UNDER 602 MONITORS.
.B1
.PARAGRAPH 0
^DOCUMENTATION FOR USING ^^BACKUP\\ IS CONTAINED IN THE  HELP FILE
^^BACKUP.HLP\\, AND IN THE SPECIFICATIONS SECTION OF THE
SOFTWARE NOTEBOOKS. ^A PROGRAM LOGIC MANUAL FOR ^^BACKUP\\ AND IT'S
WORKER MODULE ^^BACKRS\\ CAN BE PRODUCED BY SUBMITTING THE SOURCE
FILES (^^BACKUP.MAC\\ AND ^^BACKRS.MAC\\) TO ^^RUNOFF\\ VERSION 10.
.B3.LM0
2.0##<EXTERNAL <CHANGES
.B1
^VERSION 1 OF ^^BACKUP\\ RAN ONLY INTERCHANGE MODE, A MODE IN WHICH
SYSTEM DEPENDENT OVERHEAD INFORMATION WAS NOT INCLUDED ON TAPE.
^VERSION 2 HAS BEEN EXPANDED TO SUPPORT RUNNING IN NON-INTERCHANGE MODE AND INCLUDING ALL SYSTEM INFORMATION ON TAPE. ^THIS MODE
IS NOW THE DEFAULT AND RUNNING IN INTERCHANGE MODE IS ENABLED BY
MEANS OF A SWITCH. ^ALL SWITCHES LISTED IN THE DOCUMENTATION ARE NOW
SUPPORTED.
.B3
3.0##^^KNOWN BUGS AND DEFICIENCIES\\
.B1
^THE FOLLOWING DEFICIENCES ARE KNOWN TO EXIST IN VERSION 2:
.B1
^FULL ^^.SCWLD\\ STYLE OF PATTERN REPLACEMENTS ARE NOT YET IMPLEMENTED.
^WAITING FOR ^^DEC\\ COMMAND STANDARD.
.B1
"^^'NOT'\\", ETC., IN FULL ^^.LKWLD\\ IMPLEMENTATION IS NOT YET IMPLEMENTED.
.B1
^^LABEL\\ COMMAND AND WRITING LABELS ARE NOT YET IMPLEMENTED.
.PG.B3.LM0
4.0##<INSTALLATION <INSTRUCTIONS
.B1
^FILES INVOLVED:
.B1
^^BACKUP.MAC, BACKRS.MAC\\ -- SOURCE FILES WHICH MAKE UP THIS PRODUCT.
.B1
^^BACKUP.SHR, BACKUP.LOW\\ -- THE EXECUTABLE FILES.
.B1
^^BACKUP.RNH\\ -- INPUT TO ^^RUNOFF\\ V.10 TO MAKE THE HELP FILE.
.B1
^^BACKUP.HLP\\ -- THE HELP FILE.
.B1
^^BACKUP.PLM, BACKRS.PLM\\ -- PROGRAM LOGIC MANUALS EXTRACTED FROM THE SOURCE FILES BY ^^RUNOFF\\ V.10.
.B1
^TO BUILD THE PROGRAM, YOU MUST USE ^^MACRO\\ V.50:
.B1.I5
^^.LOAD BACKUP.MAC,BACKRS.MAC\\
.I5
^^.SSAVE BACKUP\\
.B1
^THIS ASSUMES ^^MACTEN.UNV, UUOSYM.UNV\\ AND ^^SCNMAC.UNV\\ ARE ON DEVICE ^^UNV:\\
AND THAT ^^SCN7B.REL\\ (^^SCAN\\ VERSION 7^B), ^^WLD7A.REL\\ (^^WILD\\ VERSION 7^A), ^^HELPER.REL\\ AND ^^ENDECR.REL\\  ARE ON ^^REL:\\.
.B3
5.0##<INTERNAL <CHANGES
.B1
^NONE.
.B3
[^END OF <BKP2.DOC]
.B1
[<BKP1.DOC IS APPENDED AS AN INTEGRAL PART OF <BKP2.DOC]
.T <BKP1.DOC
.PG
<BACKUP.DOC -- ^V1
.BR
^APRIL 1975
.B3.LM0
1.0##SUMMARY
.B1
^THIS IS THE FIRST RELEASE OF ^^BACKUP\\, A PROGRAM FOR
 TRANSFERING FILES BETWEEN SYSTEMS VIA MAG TAPE. ^VERSION 1
 OF ^^BACKUP\\ IS DESIGNED TO FACILITATE INTERCHANGE OF FILES
 BETWEEN SITES, AND SOON ALL
 ^^DEC\\SYSTEM-10 SOFTWARE WILL BE DISTRIBUTED IN ^^BACKUP\\
 FORMAT. ^VERSION 1 OF ^^BACKUP\\ SUPPORTS INTERCHANGE MODE ONLY.
^IN THIS MODE ^^BACKUP\\ DOES NOT WRITE SYSTEM SPECIFIC INFORMATION ON TAPE,
BUT ONLY INFORMATION WHICH IS CRITICAL TO THE FILE ITSELF.
^ON A RESTORE, SYSTEM DEFAULTS ARE APPLIED.
 ^VERSION 1 IS ^^NOT\\ INTENDED AS A REPLACEMENT FOR
 ^^FAILSAFE\\.
^WE STRONGLY RECOMMEND AGAINST ATTEMPTING TO USE IT FOR THIS PURPOSE.
 (^A FUTURE VERSION OF ^^BACKUP\\ WILL BE
 GENERALIZED TO SUPPORT OTHER MODES AND WILL BE SUITABLE FOR
 PERFORMING SYSTEM BACKUP.)
.B1
^VERSION 1 IS BEING DISTRIBUTED TO ALLOW SITES TO BECOME FAMILIAR WITH
THE PROGRAM WHICH WILL BECOME THE PRINCIPLE TOOL FOR
ALL ^^DEC\\SYSTEM-10  SOFTWARE DISTRIBUTIONS.
^A PHASED SWITCH-OVER TO ^BACKUP\\ IS PLANNED.
^FIRST, A PARALLEL DISTRIBUTION (USING ^^BACKUP\\
AND ^^FAILSAFE\\) OF UNBUNDLED SOFTWARE
 TO SELECTED TEST SITES WILL BE TRIED. 
 ^NEXT A FULL SOFTWARE DISTRIBUTION IN PARALLEL TO ALL SITES WILL BE
ACCOMPLISHED.
^IF PROBLEMS ARE DISCOVERED AND CORRECTED DURING THESE TESTS, 
VERSION 1^A OF ^^BACKUP\\ WILL BE CREATED AND DISTRIBUTED.
^FINALLY, ON SUCCESSFUL COMPLETION OF THESE DISTRIBUTIONS,
REGULAR USE OF ^^BACKUP\\ FOR
ALL RELEASE DISTRIBUTIONS WILL BEGIN AND ^^FAILSAFE\\ FORMAT RELEASES WILL NO LONGER
BE AVAILABLE.
.B1
^VERSION 1 OF ^^BACKUP\\ IS CLASSED AS SUPPORT CATEGORY ^C.
 ^PLEASE REPORT 
REACTIONS, SUGGESTIONS AND PROBLEMS WITH ^^BACKUP\\ VIA ^^SPR\\S.
^WE SOLICIT YOUR INPUT, AND IT WILL BE FORWARDED DIRECTLY TO
^^BACKUP\\'S DEVELOPERS. ^HOWEVER, NO ^^SPR\\S WILL BE ANSWERED AND
NO CORRESPONDENCE WILL BE ENTERED INTO. ^THIS EARLY DISTRIBUTION OF
^^BACKUP\\ HAS BEEN DONE TO GIVE YOUR INSTALLATION A CHANCE TO GAIN
EXPERIENCE WITH THIS NEW PROGRAM. ^YOU MAY VIEW IT AS AN OPPORTUNITY
TO PARTICIPATE IN FIELD-TESTING AN IMPORTANT NEW PRODUCT.
.B1
^THIS VERSION OF ^^BACKUP\\ MUST BE LOADED WITH ^^SCAN\\ VERSION 7^A,
AND FIELD IMAGE VERSIONS OF ^^HELPER\\ AND ^^ENDECR\\.
^^BACKUP\\ RUNS ON ALL SUPPORTED MONITORS.
.B1
^DOCUMENTATION FOR USING ^^BACKUP\\ IS CONTAINED IN THE  HELP FILE
^^BACKUP.HLP\\. ^A PROGRAM LOGIC MANUAL FOR ^^BACKUP\\ AND IT'S
WORKER MODULE ^^BACKRS\\ CAN BE PRODUCED BY SUBMITTING THE SOURCE
FILES (^^BACKUP.MAC\\ AND ^^BACKRS.MAC\\) TO ^^RUNOFF\\ VERSION 10.
.PG.B2
1.1##^DISCLAIMERS
.B1.LM9.I-4
1.##^VERSION 1 OF <BACKUP DOES NOT REPLACE FAILSAFE.\\
.B1.I-4
2.##^NOT ALL FEATURES ARE IMPLEMENTED OR TESTED.  ^EXPECT PROBLEMS
IF YOU EXPERIMENT WITH UNTESTED FEATURES.
.B1.I-4
3.##<BACKUP IS SUPPORT CATEGORY ^C.  ^DO NOT ASK YOUR SOFTWARE SPECIALIST
FOR HELP.  ^^SPR\\S WILL BE ACKNOWLEDGED BUT NOT ANSWERED.
.B3.LM0
2.0##<EXTERNAL <CHANGES
.B1
^NONE.
.B3
3.0##^^KNOWN BUGS AND DEFICIENCIES\\
.B1
^THE FOLLOWING DEFICIENCES ARE KNOWN TO EXIST IN VERSION 1:
.B1
^ONLY INTERCHANGE MODE IS SUPPORTED.
.B1
^WRITE RECOVERY CODE TO REWRITE ON TAPE ERRORS DOESN'T WORK.
.B1
^ON READ, THE LAST OCCURANCE OF A REPEATED BLOCK SHOULD BE USED INSTEAD OF THE FIRST.
.B1
^SWITCHES ^^/NOSTRS\\ AND ^^/OKPROTECTION\\ ARE NOT SUPPORTED.
.B1
^FULL ^^.SCWLD\\ STYLE OF PATTERN REPLACEMENTS ARE NOT YET IMPLEMENTED.
.B1
^UNUSED ^^INTERN\\S BETWEEN ROUTINES SHOULD BE CLEANED OUT.
.B1
"^^'NOT'\\", ETC., IN FULL ^^.LKWLD\\ IMPLEMENTATION IS NOT YET SUPPORTED.
.B1
^HUMAN INTERFACE ON REEL SWITCHING IS POORLY DESIGNED.
.B1
^^LABEL\\ COMMAND AND WRITING LABELS ARE NOT YET IMPLEMENTED.
.B1
^^T$CON\\ RECORD ON NEW REEL HAS NOT BEEN IMPLEMENTED.
^THIS IS NEEDED TO  ENSURE THAT NEW
REEL PLAYBACK DOES NOT REQUIRE PREVIOUS REEL.
.B1
^FILES CANNOT BE NON-CONTIGUOUS ON PLAYBACK. ^ALLOW THIS AND OMIT TAPE
BLOCKS ON WRITE WHICH ARE TOTALLY ZERO.
.B1
^FULLY GENERAL DISK DEVICES ARE NOT YET IMPLEMENTED.
.B1
^THERE ARE DUPLICATED INTERNAL ROUTINES, WHICH SHOULD BE FIXED
BY FORCE LOADING PARTS OF ^^SCAN\\ INTO THE LOW SEGMENT.
.PG.B3.LM0
4.0##<INSTALLATION <INSTRUCTIONS
.B1
^FILES INVOLVED:
.B1
^^BACKUP.MAC, BACKRS.MAC\\ -- SOURCE FILES WHICH MAKE UP THIS
PRODUCT.
.B1
^^BACKUP.SHR, BACKUP.LOW\\ -- THE EXECUTABLE FILES.
.B1
^^BACKUP.RNH\\ -- INPUT TO ^^RUNOFF\\ V.10 TO MAKE
THE HELP FILE.
.B1
^^BACKUP.HLP\\ -- THE HELP FILE.
.B1
^^BACKUP.PLM, BACKRS.PLM\\ -- PROGRAM LOGIC MANUALS
EXTRACTED FROM THE SOURCE FILES BY ^^RUNOFF\\ V.10.
.B1
^TO BUILD THE PROGRAM, YOU MUST USE ^^MACRO\\ V.50:
.B1.I5
^^.LOAD BACKUP.MAC,BACKRS.MAC\\
.I5
^^.SSAVE BACKUP\\
.B1
^THIS ASSUMES ^^C.UNV\\ AND ^^SCNMAC.UNV\\ ARE ON DEVICE ^^UNV:\\
AND THAT ^^SCAN.REL\\ (VERSION 7^A), ^^HELPER.REL\\ AND ^^ENDECR.REL\\  ARE ON ^^REL:\\.
.B1
^^NOTE\\:##^^DIRECT\\ CANNOT AS YET READ ^^BACKUP\\ FORMAT TAPES.
^DIRECTORY LISTINGS CAN BE PRODUCED BY ^^BACKUP\\ BY USING THE ^^PRINT\\ VERB.
.B3.LM0
5.0##<INTERNAL <CHANGES
.B1
^NOT APPLICABLE FOR THIS RELEASE.
.B3.LM0
[^END OF <BKP1.DOC]