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twe4a.doc
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TWICE.DOC -- Changes from V4A(24) to V4A(25)
September 1978
COPYRIGHT (C) 1973,1975,1978 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.
TWE4A.DOC Page 2
TWICE.DOC -- Changes from V4A(24) to V4A(25)
September 1978
1.0 SUMMARY
TWICE has been changed to incorporate the fixes in 603A refresher.
2.0 EXTERNAL CHANGES
If FE.SYS exists on the structure it does not destroy it. (Note that
FE.SYS is not looked up but home block words 61 and 62 are used to
determine its existance.)
3.0 KNOWN BUGS AND DEFICIENCIES
None.
4.0 INSTALLATION INSTRUCTIONS
A. Use distributed TWICE.EXE.
B. Use TWICE.CTL, or some reasonable facsimle thereof.
Note that all required modules must be assembled the for KI10. TWICE
will not load if assembled for the KL10. Even though assembled for
KI, TWICE will run on any CPU.
5.0 INTERNAL CHANGES
New (603A) REFSTR.
[End of TWE4A.DOC]
[TWE4A.DOC has been appended as an integral part of TWE4A.DOC]
TWE4A.DOC Page 3
TWICE.DOC -- Changes from V4(23) to V4A(24)
March 1977
1.0 SUMMARY
TWICE has been changed to assemble and load with version 6.03 of
TOPS10.
2.0 EXTERNAL CHANGES
Units that are down are now listed but a response (1, 2, or 3) is not
required - same as "Q" response to regular monitor.
3.0 KNOWN BUGS AND DEFICIENCIES
None.
4.0 INSTALLATION INSTRUCTIONS
The file TWICE.CTL will produce TWICE.HGH and TWICE.LOW. It is
recommended that the TWICE.HGH and TWICE.LOW on the tape be used.
Note that the new version of TWICE must be used to define RP06
structures. 6.02 TWICE will not set up the correct values.
When we added RP04's we changed the MONGEN dialogue which generates
HDWMAX (the maximal disk configuration) to contain two of each type of
disk controller (FH, FS, DP, RP) and the maximum number of units on
each controller. This was done because we discovered that certain
macros in COMMOD blow up when more than eight controllers are defined.
Those few installations with more than two controllers of the same
type (most likely DPA's, DPB's, and DPC's) may remake TWICE for their
configuration or else live with the restriction that TWICE won't
access units on the third controller (e.g., DPC's).
5.0 INTERNAL CHANGES
Edit #
24 Satisfy undefined global requests new in TOPS10 version 6.03.
[End of TWE4A.DOC]
[TWE4.DOC is appended as an integral part of TWE4A.DOC]
TWE4.DOC Page 4
TWICE.DOC -- Changes from V3A(22) to V4(23)
August 1975
1.0 SUMMARY
TWICE has been changed to assemble and load with version 6.02 of
TOPS10.
2.0 EXTERNAL CHANGES
Units that are down will now be listed in the section of units not in
a file structure, as is done in version 6.02 of TOPS10. This is due
to the high availablility feature which retains units in the unit data
block chain even if they are down. Twice now has a writable high
segment which should not be shared. This change is due to the two
segment monitor feature of 6.02. The number of monitor buffers
reported by TWICE is now the result of a GETTAB (%LDMBN). If the
gettab fails, TWICE reports the value that was specified in the
hardware configuration file that it was assembled with. This version
of TWICE is only supported when assembled and loaded with material
from version 6.02 of TOPS10.
3.0 KNOWN BUGS AND DEFICIENCIES
None.
4.0 INSTALLATION INSTRUCTIONS
The file TWICE.CTL will produce TWICE.HGH and TWICE.LOW. It is
recommended that the TWICE.HGH and TWICE.LOW on the tape be used. Due
to a change in the HOM blocks in 6.02, this version of TWICE will not
report the correct value of K for CRASH.EXE (CRASH.SAV) for a file
structure unless that structure was refreshed with TOPS10 version 6.02
or the equivalent.
When we added RP04's we changed the MONGEN dialogue which generates
HDWMAX (the maximal disk configuration) to contain two of each type of
disk controller (FH, FS, DP, RP) and the maximum number of units on
each controller. This was done because we discovered that certain
macros in COMMOD blow up when more than eight controllers are defined.
Those few installations with more than two controllers of the same
type (most likely DPA's, DPB's, and DPC's) may remake TWICE for their
configuration or else live with the restriction that TWICE won't
access units on the third controller (e.g., DPC's).
TWE4.DOC Page 5
5.0 INTERNAL CHANGES
EDIT 23 Satisfy undefined global requests new in TOPS10 version 6.02,
change down unit logic to account for the fact that units
are never removed from unit data block chain, write enable
monitor high segment so TWICE can write in it, GETTAB number
of monitor buffers from current monitor.
[End of TWE4.DOC]
[TWE3A.DOC is appended as an integral part of TWE4.DOC]
TWE3A.DOC Page 6
TWICE.DOC -- Changes from V3(21) to V3A(22)
January 1975
1.0 SUMMARY
TWICE now supports RP04's
2.0 EXTERNAL CHANGES
None.
3.0 KNOWN BUGS AND DEFICIENCIES
When assembled and loaded with 507 or earlier monitor modules, TWICE
sometimes fails with an ILL MEM REF when using the DESTROY option.
This is a problem in ONCMOD which affects the DESTROY option only.
4.0 INSTALLATION INSTRUCTIONS
The file TWICE.CTL will produce TWICE.SAV. It is recommended that the
TWICE.SAV on the tape be used. This TWICE should work under all
supported 5-series monitors, including those which do not support
RS04's and/or RP04's.
When we added RP04's we changed the MONGEN dialogue which generates
HDWMAX (the maximal disk configuration) to contain two of each type of
disk controller (FH, FS, DP, RP) and the maximum number of units on
each controller. This was done because we discovered that certain
macros in COMMOD blow up when more than eight controllers are defined.
Those few installations with more than two controllers of the same
type (most likely DPA's, DPB's, and DPC's) may remake TWICE for their
configuration or else live with the restriction that TWICE won't
access units on the third controller (e.g., DPC's).
5.0 INTERNAL CHANGES
EDIT 22 Include RP04 support
[End of TWE3A.DOC]
[TWE3.DOC is appended as an integral part of TWE3A.DOC]
TWE3.DOC Page 7
TWICE.DOC -- Changes from V3(17) to V3(21)
October 1974
1.0 SUMMARY
TWICE has been modified to support RS04's. In addition, a bug has
been fixed which caused STOPCD's not to be printed.
2.0 EXTERNAL CHANGES
None.
3.0 KNOWN BUGS AND DEFICIENCIES
TWICE sometimes fails with an ILL MEM REF when using the DESTROY
option. This is a problem in ONCMOD which affects the DESTROY option
only.
4.0 INSTALLATION INSTRUCTIONS
The file TWICE.CTL will produce TWICE.SAV. It is recommended that the
TWICE.SAV on the tape be used.
5.0 INTERNAL CHANGES
EDIT 20 Support RS04's.
EDIT 21 Fix problem with STOPCD's, change T4POPJ into a real routine
so SATCN in FILIO can use it.
[End of TWE3.DOC]
[TWE003.DOC is appended as an integral part of TWE3.DOC]
TWE003.DOC Page 8
TWICE.DOC -- Changes from V2 to V3(17)
Feburary 1973
1.0 SUMMARY
TWICE has been modified to run with 5.06 monitor sources or .REL files
and incorporates many of the new features of the 5.06 ONCE-only
dialogue. Also an optional scratch file has been added to facilitate
debugging ONCE or TWICE. TWICE version 3(17) requires 5.06 sources or
.RELS but should run on all 5 - series monitors.
2.0 EXTERNAL CHANGES
1. The new once-only options for shorter dialogues for disk
parameter changes have been incorporated.
2. An optional scratch file has been added. TWICE now asks USE
SCRATCH FILE (Y OR CR>)?
If the answer is yes, file DSK:TWICE.BIN is created, allowing
50 blocks for each "unit" as specified in COMMOD. Further
disk I/O is to this file instead of real disk units, so that,
for example, real HOME blocks are not clobbered. I/O to a
given block on a unit is changed to mean the corresponding
block within the 50 blocks representing the unit in the
scratch file, using regular USETI/USETO instead of super -
USETI/USETO. I/O to a block out of range is done to the last
block in the file for that unit. The number of blocks
reserved for each unit is an assembly parameter BLKPUN:. Its
default value is 50 (decimal). If the scratch file is used,
TWICE may be run under any PPN.
If the answer to the question is no, the regular TWICE
dialogue proceeds.
3. The routine in TWICE which satisfies presumably unused
globals from the monitor routines has been changed from a
POPJ to a STOPCD, so that if it is in fact being called, that
will be discovered.
3.0 KNOWN BUGS AND DEFICIENCIES
None.
TWE003.DOC Page 9
4.0 INSTALLATION INSTRUCTIONS
1. TWICE version 3(17) must be assembled with HDWCNF.MAC, the
same HDWCNF.MAC that is assembled with the COMMOD to be
loaded with TWICE.
2. TWICE must be assembled with 5.06 versions of F.MAC and S.MAC
(and HDWCNF.MAC), and must be loaded with .REL files from
5.06 monitor sources.
3. Monitor routines ONCMOD, REFSTR, FILIO, FILUUO, FILFND are
declared EXTERN in TWICE, so they may be loaded from
TOPS10.REL in library search mode. COMMOD is not declared
EXTERN since it is not in TOPS10.REL anyway.
5.0 INTERNAL CHANGES
1. TWICE now handles off-line or non-existing units properly by
passing the proper bits to ONCMOD in the USRCPY routine.
2. STOPCDs have been edited to conform to the 5.06 standard for
STOPCDs.
[End of TWE003.DOC]