hard-coded the
number of block per track in the PASSWORD data set, and at some
point (OS/360 15/16, or 18?), IBM decided to change the device
related constants and the PASSWORD data set wound up with one
block less per track.
Gerhard Postpischil
Bradford, VT
to password requests for system data
sets having all hex-zero passwords. If that was duress, it was
self-inflicted G
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statement. Am i write?
No. Traditionally SYSOUT was a single character in the range A-Z
and 0-9. Several decades ago IBM added * top copy the MSGCLASS
as the SYSOUT class. However, for INTRDR the class is ignored.
Try to use google to have your basic questions answered.
Gerhard Postpischil
not for migrated ones.
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Also note that a STOP command posts the ECB with an X'50',
whereas all others post with X'40'.
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are not noticeable.
Whether or not code is aesthetically pleasing is very much a
matter of nurture. With effective comments, the structure of
code isn't all that critical, and discussions of GOTO versus
GOTO-less programming are about as useful as religious arguments.
Gerhard Postpischil
Bradford, VT
results in
assembly errors.
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does not indicate that the immediate caller was the TMP. IBM,
for whatever reason, disallowed multiple TMP invocation in MVS
(or perhaps SVS?), so these days one can just rely on the result
from EXTRACT.
Gerhard Postpischil
Bradford, VT
any SVC that
needs R13 to point to a save area, rather there are cases where
R13 is destroyed.
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The best we can hope for is for posters to reveal their known
previously Undisclosed, Secret Support (USS) payments. g
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them, inspect which fields they set, and artificially fill in
the missing pieces. Alternatively, use two MF=L forms, one in a
CSECT and one in your DSECT, and copy the CSECT instance to the
DSECT one. In general, that will allow the MF=E form to build a
complete parm list.
Gerhard
(with modern SORT the exception, perhaps due to market pressure,
and the outstanding quality of the support team).
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exactly what condition would
choke and spit it back?
I guess that DSS, and presumably HSM, use a Read Track or Read
Track Multiple, and the only condition that might cause a
problem would be an uninitialized track, lacking basic home
address information.
Gerhard Postpischil
Bradford, VT
- in the dark
ages, under release 21 of OS/360(MVT), IEFBR14 steps on our
system abended with S322. I had to write a special exception
into IEFUTL to allow allocation to complete.
Gerhard Postpischil
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(to remind operators
of unhandled tape mounts, etc., and to grant extensions to
special jobs), adding a quick test for IEFBR14, and granting a
minimal extension, was trivial.
AFAIK, IBM addressed the problem by using a non-zero TIME to
dispatch an IEFBR14 step.
Gerhard Postpischil
Bradford, VT
. III, No.3,
December 1961), where Lemma I (all horses are the same color) is
credited to Professor Lee M. Sonneborn, then at U. of Kansas.
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an alternate nucleus that was smaller, or that the staff
weren't trained properly (note earlier post on redefining
partitions). We ran MFT at ADR for a couple of years, and I
remember redefining partitions, but never had to IPL to do so.
Gerhard Postpischil
Bradford, VT
and used the laptop until it gave up
the ghost, I replaced all my HP printers with Kyocera, with
cheaper and better features, and sleep soundly that they lost
more on toner sales than the rebates would have cost them.
Gerhard Postpischil
Bradford, VT
On 2/19/2012 5:38 PM, zMan wrote:
Point taken. But vastly dissimilar environments are pretty likely to
have greater learning curves than moderately similar ones, nu?
Not necessarily. Sometimes it's the similarities that trip you up.
Gerhard Postpischil
Bradford, VT
enough staff familiar with
internals to write and maintain the code. Basically you need
whatever the batch process is doing, and add provision for
backup and serialization. Of course it's always possible to
overcomplicate things to the point where nobody can maintain
it.g
Gerhard
with the fake name.
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, but IBM
could not justify that, either.
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subtasks and routes the CIB text as necessary.
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On 1/31/2012 3:48 PM, Ken Porowski wrote:
Watson should be answering all the questions by then .
And Toronto will be a U.S. city? G
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. And
similar to ForTran, each load module included almost the whole
subroutine library, thus wasting (then) valuable memory.
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. That way I can see in a dump how it's been updated,
rather than having to run a report.
Module replacements take more effort and disk space, so ZAPs are
closer to being green g
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worked while being tested. Because the failure modes
differed (e.g., bad data rather than an interrupt), SLIP was of
limited utility. Had there been a benign form of TRAP (ignored
by other tasks) it would have been a lot easier to track this
(turned out to be an uninitialized variable).
Gerhard
On 12/21/2011 2:18 PM, Chase, John wrote:
Already been tried: IBM-MAIN-OT in Yahoo Groups.
Can you say lead balloon?
I guess you missed the Mythbusters episode where they obtained
lead foil, inflated it, and launched it g
And a better name for the group would be DRIFT-WOULD? G
Gerhard
it. The interval timer is set to pop
at midnight, and that updates CVTDATE appropriately. I do recall
an admonition that near midnight to use SVC 11 for the date,
rather than CVTDATE, to get a synchronized value, as there was
some latency in the date update.
Gerhard Postpischil
Bradford, VT
On 12/16/2011 1:06 PM, Phil Smith wrote:
OK, trivia time:
What IBM device had *13* PF keys?
Not what you wanted, but on my 3277 I wrote a game that treated
Test-Request as PFK 0.
Gerhard Postpischil
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entry, and nobody else
is using the volume, just zap the DSCB1 start extent up one
track, do a normal copy (IEBGENER, or whatever), then zap it back.
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parameter has any restrictions (that I can
remember of).
That hasn't been true for ages. A PARM in parentheses may be
continued over multiple records, and may start in columns 4-16.
Only the 100 character restriction still applies.
Gerhard Postpischil
Bradford, VT
. It
takes lots of time, and copious errors, to learn which messages
to ignore on first reading job output, as many are either
irrelevant or non-productive.
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load in a batch window has
plenty of excuses the higher-ups will understand (more work to
process - we need a faster machine), whereas a radical change
the manager can't explain may result in unemployment at the
slightest hint of a problem.
Gerhard Postpischil
Bradford, VT
for it, that I remember, was inverted
circumflex. How about that for a meaningless mouthful? :-)
There is a name for an inverted circumflex, but it's not a not
sign, but rather a caron, or hacek (with one on top of the c).
My grandfather had one in his name.
Gerhard Postpischil
Bradford, VT
to disambiguate
them).
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comment on using members as sequential data sets, that's
fine as far as it goes. But sometimes you need an alias, or more
frequently user data for a member.
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set and change things,
with absolutely no feedback on the current status.
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that it was a typical IBM process - technical staff
raises an issue, and a bean counter shoots it down for lack of a
business case. After all, everyone backs up their files, right?
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if the user overrides to DSORG=PS,
in either JCL or SVC 99 arguments but forbid it for DSORG=PO.
(It's probably a bad idea to permit this override for PDSE.)
Agreed.
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a stripped 2250, complete with a cursive
character set, and minor flickering. I wrote code to run it with
EXCP, and was impressed by being able to use a mixed Read/Write
CCW chain that preserved user input while updating the screen
outside the input area, and no keyboard lockup.
Gerhard
we made him fix the switches. The other major problem was
an installation where the C.E. didn't hook up the EPO cable, and
after he left, the 4341 CPU wouldn't power up.
Gerhard Postpischil
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was able to handle it). Memorex plugged their
controllers for slower response, thus giving us support for
3330-1 and 3350 capacity, but without the speed improvements. I
fondly recall referring to it as the PIG multiplexer g
Gerhard Postpischil
Bradford, VT
). A
result is a lack of needful information in manuals, as you
noted. Some of us look through dumps, and trace execution flow,
to figure out what is happening, but that's a gray area, as
IBM's standard contracts prohibit reverse engineering.
Gerhard Postpischil
Bradford, VT
years (note that SMF exits have an IEFU prefix), and I used it
for accounting prior to the availability of SMF data. IBM
normally tends to be pretty conservative about keeping things
working, so my expectation would be for IEFACTRT to be invoked
even without SMF active.
Gerhard Postpischil
the model 1 as
useless. At the time we were running 12*80 2260s. (And while
google may be my friend, in this case it turned up nothing useful)
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to guess, it's because the UK is a lot more humid and
the lumber wouldn't shrink as much? g
Makes me wonder whether dimensional lumber in Seattle is bigger
than in Texas.
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had a different date
format.
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,
that might be preferable to a one hour shut down.
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the first
time, it's nice to have in the long run.
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would
have TTR=01, and TT alone gives you an incorrect 0 when you
need 1.
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drivers.
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rather than assembler that's fine. However, IDCAMS may
be invoked from assembler using the SYSIN/SYSPRINT exits, making
the process more efficient.
Gerhard Postpischil
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number of buffers, it's quite easy to
overlay the relevant BSAM control blocks and CCWs with larger
sizes. QSAM might be a bit harder. These days it's easier to use
EXCP, since much of the detailed error handling can be avoided.
Gerhard Postpischil
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SWAREQ (unauthorized for retrieval) to get the virtual JFCB address.
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either treat the JFCB
address as an SVA (preferred), or test whether it's an address.
While SVAs are odd, IBM has made no commitment to that effect,
so using SWAREQ is the preferred approach.
Gerhard Postpischil
Bradford, VT
.
Is it a matter of editing the TIOT, or ?
This is feasible only when the called programs support changing
the name (e.g., many IBM utilities offer an optional DDNAME list
on invocation).
Changing the TIOT (alone) wouldn't help, as there are other
control blocks with the name.
Gerhard Postpischil
appeared to work
correctly, but the linker forced one of the names to a
double-word boundary which it hadn't been before. I no longer
recall the details, and haven't seen the problem since, and I
long ago lost the output.
Gerhard Postpischil
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.
The message is self-explanatory. If not, read the assembler manuals.
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a dozen MVC and CLC
instructions where one of the operands was a character
self-defining term (e.g., MVC FLAG,C'X'). And those were only
the obvious errors.
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, there is
no business case for a complete SMF rewrite.
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designed system than the alternatives. In this same time
I've gone through several PCs and versions of DOS and Windows,
at much greater expense.
If the model T had four wheel drive, it might be preferable to
my current car in winter and mud season g
Gerhard Postpischil
Bradford, VT
On 8/23/2011 1:05 PM, Micheal Butz wrote:
If I have a peice of code that was MVCL somewere it can'nt be
the object of synch/synch
OK, I'll bite - why not?
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On 8/23/2011 3:10 PM, Micheal Butz wrote:
On Aug 23, 2011, at 2:47 PM, Gerhard Postpischil
gerh...@valley.net wrote:
On 8/23/2011 1:05 PM, Micheal Butz wrote:
If I have a peice of code that was MVCL somewere it can'nt be
the object of synch/synch
OK, I'll bite - why not?
In a earlier post
, pre-RACF; I
don't know what they ran once they got their own computer center
in DC).
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' in JFCBELNM as an indication that the data
set is a generation data set (GDS) of a generation data group
(GDG).
That sounds like a reportable error. JFCBELNM is not supposed to
be relevant unless JFCBIND1 has either the JFCPDS (member name)
or JFCGDG (generation number) set on.
Gerhard Postpischil
with all PN train characters, an 8*8 matrix, italics, and a few
other enhancements in the seventies. On top of that it appeared
to have been written by a 7094 programmer, using full-word
instructions for character manipulation; definitely not one of
IBM's finer efforts.
Gerhard Postpischil
to be the use of an IBM
provided option in a supported (pre-logon) exit?
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(line mode terminal) or a formatted
screen for logon (didn't use USS), and displayed options that
were verified against the user's privileges (our security was
based on account numbers), so it was fairly easy to restrict
goodies to trained users.
Gerhard Postpischil
Bradford, VT
on a data set
block size. If you are asserting that the Binder reverts to a
logical 4K size, then the PDSE would at best match, or come out
slightly worse than a PDS with a 4K block size, due to design.
Gerhard Postpischil
Bradford, VT
keypunched as an LH; the error was
discovered fourteen years later when IBM changed a control block
around so the referenced field wound up on an odd boundary.
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provide details, the attendant
would punch stuff into a card, shuffle it into a deck of a
couple of hundred other cards, and run them through a card
sorter. After a few times, exactly one card fell into the
lucky slot, containing the customer's fortune.
Gerhard Postpischil
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.
How many of our list participants are sufficiently skillful to
construct a partial DSCB correctly?
Most of the dinosaurs, who had to run OS/360 despite IBM's help.
g Completing a DSCB is no more difficult than setting up a JFCB.
Gerhard Postpischil
Bradford, VT
On 8/10/2011 1:50 PM, Tim Brown wrote:
What is required to make a particular batch job run as non-swappable
It has to run authorized, and issue a SYSEVENT, either TRANSWAP
or DONTSWAP.
Gerhard Postpischil
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, nor the OPEN and CLOSE statement; and if you
have those, you could be missing the DD card.
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the CVTUSER slot (pointing to a table, for expansion), but that
makes your code installation dependent, as everyone else finds
this tempting also.
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for this exit, but do
absolutely nothing to a job submitted (TSO or otherwise) via DD
SYSOUT=(x,INTRDR).
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undocumented ones
(returning an 0Cx other than 0C1, or executing); of course that
didn't tell me what they were.
Also IBM CEs had a rack of machine service manuals and logic
charts; these were readily accessible, and sometimes quite
revealing.
Gerhard Postpischil
Bradford, VT
, and another that causes all tape
drives to rewind, unload, and power off. Similar ones I tried on
the 360/50 gave me a machine check unless I/O was quiesced
beforehand.
And I seem to recall that A0 was the opcode for loading emulator
instructions on the 360/165.
Gerhard Postpischil
Bradford, VT
be
replaceable, but is fairly embedded. And finally, the code for
asynchronous terminal support isn't included, as they moved that
functionality into a custom front-end.
Gerhard Postpischil
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to the
misapprehension, you are trying to argue your way out of it.
That not only wastes everyone's time, but has already made you
appear incredibly foolish.
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configurable tabs, provides the
fastest means of data entry. And with a properly modified
Wylbur, you can get full-screen support on an asynchronous CRT,
and have full-screen editing, too. While I've installed and
maintained ROSCOE, I've never used it, so can't comment.
Gerhard Postpischil
Bradford, VT
2006 date
seems pretty old.
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that Mr. Pepper, before
his marriage, habitually practiced celibacy.[8]
The Smathers campaign denied his having made the speech, as did
the reporters who covered his campaign, but the hoax followed
Smathers to his death.[9]
Gerhard Postpischil
Bradford, VT
)
or BSAM, provided the CCWs had the SLI bit on, and you had code
to zero the buffer prior to the read, and your deblock code went
past the block end.
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On 7/31/2011 9:37 AM, Shmuel Metz (Seymour J.) wrote:
My opponent has publicly
matriculated and his father was a thespian.
Not the way I heard it: he was seen to masticate in public, and
his sister was a thespian. There was also a third one I can't
recall.
Gerhard Postpischil
Bradford
statement
above makes it evident that you are using DCB attributes on
DASD as applying to the format of the data, whereas the other
participants in this merry-go-round are referring to the DCB
parameters in the format 1 DSCB (DS1RECFM, DS1LRECL, DS1BLKL).
Gerhard Postpischil
Bradford, VT
, and then
restrict the new information from the web. As is, the horse is
out of the barn. g
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to be flagged authorized, which saves yet more time
developing system utilities. While there was an integrity
exposure when it was first written, with modern security it's
safe enough to put on a production system, not that I'd
recommend that.
Gerhard Postpischil
Bradford, VT
was an issue, as the design of the paging
system could have provided a subpool for protected pages in the
user space.
If a module needed to be in shared storage, the installation
could put it there, thus avoiding IBM involvement.
Gerhard Postpischil
Bradford, VT
. The refreshable
attribute is negated if any input modules are not
refreshable. Refreshable modules are also reenterable and
serially reusable.
A module may be refreshable, but need not be re-entrant. This
has been discussed before.
Gerhard Postpischil
Bradford, VT
extensive macro and
subroutine libraries to use with assembler, and find it as fast
and easy to use those than to live with (the confining
limitations of) higher level languages. De gustibus.
Gerhard Postpischil
Bradford, VT
the tailgate as a doors?
Since we're already off-topic - yes. Some years ago the locks on
my station wagon froze (we have fairly cold winters), and I had
to get into the car through the back.
Gerhard Postpischil
Bradford, VT
/conversion
date in a system exit (e.g., IEFUJV, or one of the JES exits).
Depending on how you get the JCL into the system, it might be
easier to do as part of the submission process?
Gerhard Postpischil
Bradford, VT
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