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.FLAGS CAPIT.PS 58,72
.T <NETTST - A NETWORK TEST PROGRAM V5D(37)
.SUBTTL ^RIC ^WERME, 1976/1977
.HL 1 general operation
.hl 2 assembly instructions
NETTST is built from several files.
Before trying to build it, collect the following files into a single area:
.lm 15.ts 16
<nettst.mac This is the main program.
It references all the following files.
<tulip.mac This assembles into <tulip.unv, the symbol definition file
for the TULIP IO package (DECUS _#10-231).
This version is newer than the DECUS version, which will be updated
TULIP documentation is not shipped on the release tape, interested
parties should order TULIP from DECUS.
<tullib.mac This is the IO package subroutine library and
assembles into <tullib.rel.
<maclib.mac A collection of IO subroutines not well enough designed to
warrant inclusion with TULLIB.
This assembles into <maclib.rel.
<netlib.mac A collection of subroutines that allow the caller (NETTST)
to symbolically access memory in running DN8x systems.
This assembles into <netunv.unv and <netlib.rel.
<dteprm.unv This is a module used in building TOPS-10 monitors and is
needed by NETTST to access the DTE20 communications area.
Next, assemble all the ancillary stuff:
.s.i 10;_.COMPILE TULIP,TULLIB,MACLIB,NETLIB
Then load and save NETTST:
.s.i 10;_.LOAD NETTST
.I 10;_.SAVE NETTST
.br;See the description of the DDT command below for saving NETTST with
.hl 2 restrictions
A few commands make symbolic references to running DN8x systems.
Unfortunately, these require extensions to NETTST, NETLIB, and some other
program that writes symbol table files (probably DDT11).
This probably will not be done for the 6.03A network LIR but hopefully
will be done for 7.01.
The commands affected by this restriction are SYMSET, OCNMON, and
.hl 2 command format
Any reasonable number of commands may be typed on a single line separated
by commas (although spaces sometimes (but not always) work).
Commands will be executed in the order typed.
.i 5;Do? ASCOUT:LPT22:, RIPPLE, SPACE, RIPPLE, RELEASE
.I 5;Do? OCNMON, NDBMON, SCBMON
.hl 2 arguments
Commands that take arguments are shown that way below with their
default as the argument.
The argument is tacked onto a command with a colon, commands that take
arguments may be typed without them in which case the last argument used
will be the default.
.s;The types of arguments presently used are:
.br;SFD's are not handled, but the NODE__DEV:FILE.EXT construct
Furthermore, terminals on network nodes may be specified this way, something
that cannot be done with the monitor assign command.
(E.#G_. "ENCORE__TTY0:" specifies the console terminal of node ENCORE.)
.le;Decimal numbers (unsigned)
.le;Octal numbers (unsigned)
.le;SIXBIT strings (6 character max)
.hl 1 data test commands
.hl 2 device specification commands
.BR;All these specify the file to access with the following test commands.
Only one of these can be in effect at any given time, issuing a new
command will cause the previous file to be closed and released.
.hl 2 Test pattern commands
.br;These are meant for use with the BININP/BINOUT commands but will handle
ASCII quite nicely also.
The pattern used will be floating ones or floating zeros.
These patterns were originally used to test binary task/task
.br;These are meant for use with the ASCINP/ASCOUT commands but will also handle
binary quite nicely.
The patterns used are strings of period, spaces, or a ripple pattern
bracketed with angle brackets (so you can see where the spaces stopped).
These patterns were orginally used for test LPT compression.
.br;This command only works after ASCINP, BININP, or BYTINP.
It will print data from the connection on the terminal (in octal if used
It was originally written to see exactly what an RSX-11M system was
sending through the compatible port.
.br;This continually repeats the command line until an error
occurs or something is typed on the keyboard.
See below under "Monitoring Commands" for more information.
.hl 2 Parameter modifying commands
.br;This specifies the number of messages to be sent or received per
invocation of pattern command.
.br;This specifies the length of data for the first message
.br;This specifies the increase in length of each successive message from
the pattern generater.
.br;This prints out the present values of the preceeding three commands
and some (usually wrong) information about the amount of data that can
fit in a buffer.
The preceeding three command also force this command to be executed.
.br;This specifies the number of buffers to be used by the data test commands
and must be issued before them.
Zero means to use the system default for the number of buffers.
.BR;This specifies that devices are to be opened with the IO.SUP bit
(i.e., TTY suppress echo; bit 28) set in the status word.
.br;This specifies that devices are to be opened with the IO.SFF bit
(i.e., LPT suppress form feed; bit 29) set in the status word.
For LPT's this means the preceeding and trailing formfeeds will be suppressed.
It also must be issued before a data test command.
.br;When echo is set ON, the next device specification command sets up
the device in modify mode.
When the next pattern command is typed, after each message
is received (sent), an echo is sent (received).
This is to check out full duplex TSK's, a task yet to be done.
.br;When on, a hash mark (_#) will be printed on the terminal after the
transmission of each message to provide visual and
audible (sometimes) feedback that the data is still moving.
At the end of a data pattern command, a CRLF will be output.
.br;When on, the baud rate of the transfer will be printed for the
data moved for this invocation of a data pattern command.
Keep in mind that this doesn't include parity bits, or TTY's start
and stop bits.
If ASYNC:ON is in effect, this will also print the number of successful
and unsuccessful IO instructions.
.hl 2 special IO mode commands
These commands exercise the extensions to normal buffered mode IO done in the
past several monitor releases.
All of these commands are of the ON/OFF variety and are used to enable
or disable the special modes.
When the interrupt and async. IO modes are on, their action cannot
really be appreciated unless HASH is also on.
.br;This makes the next device specification command do its OPEN with the
asynchronous IO bit set.
Whenever an IN or OUT UUO gets an error return with no error bits set, NETTST
will print an "A" if in hash mode and then HIBERnate waiting for IO activity
In case nothing happens, it will wake up after 10 seconds anyway and try again.
This makes it tolerant of monitor bugs that forget to wake NETTST.
See also: STATISTICS.
.br;When the argument is ON, this turns on the PSI system which is set up
to handle interrupts for the device under test.
The interrupt routine does not materially affect the operation of the test
routines, it merely logs the interrupts if the hash switch is set.
Whenever an interrupt occurs, visual indication will be given if HASH:ON
is in effect.
The output based on the reason bits are:
Output bit meaning
I PS.RID input done
O PS.ROD output done
-EOF- PS.REF end of file
-INPUT ERROR- PS.RIE
-OUTPUT ERROR- PS.ROE
All other interrupt conditions are not enabled for but if they occur they
will be marked with a "?".
.br;When this is set to ON, the next device specification command will OPEN
the MPX device and then connect the test device to that channel.
The special actions of the MPX device (specifically the storing of the
UDX in the buffer header) will not be checked (after all, this is a network
tester, not MSGSER tester); the goal of this command is to have no effect on
the operation of the test.
.hl 2 terminal commands
.br;The parameter this takes is either a node name or number or ALL.
It will print a mapping on the TTY between node__line pairs to
If a node name or number is given, the mapping will be
from line numbers on that node (0 to whatever) to TTY numbers (356
If the special case of ALL is typed, then the mapping is from TTY number
to node__line pairs.
Note that TTYs PTYs use are include at the high end of the output.
.br;This command is a hack command of sorts.
The parameter is a TTY number, every line typed after this
command up to an ESCape will be printed on the TTY specified.
I got tired of typing a lot of .SEND's one night.
.br;There is no default for this command at first.
The parameter is either a node name or number or a TTY
If a node is used, it will have the same effect as the TTY name for
the terminal on the specified node with the same line number as the
program's job number
(That's so I could tell OPSER 'ALL-FOX:FOO').
This will send several lines (set by NUMLIN) of text to the
Last I saw, the TRMOP. I used to send the data no longer blocked
the job which makes it kind of useless for this application.
.br;This sets the baud rate to be used in future FOX commands.
Only the output side will be set.
.br;This sets the fill class to be used on future FOX commands.
.hl 2 Monitoring commands
.br;There are several commands that display useful information from the
-10 or -11s.
When used with the LOOP command (below) they output data, wait awhile,
output any errors that occurred since last time, wait some more, etc.
Once in a great while, they output all the information in a summary
.br;This prints out the contents of bad NCL messages as they arrive in the -10.
Most NCL messages are decoded and are printed in a reasonable form.
Take this data with a grain of salt.
Race conditions inherent in any network designed to date make it possible
for almost any message that made sense when it was transmitted be illegal
when it is read.
.br;Someday I'm going to add code to read the symbols contained in
a monitor .EXE file.
Until then, this parameter is the address of the KL10's comm area that
is used by all systems with DTE20's.
This command isn't really a monitoring command because it won't
remember to sleep before the next invocation, but this is a good
section to put it.
Since it outputs a lot of data, using the logging facility
described below is a good idea.
Therefore, its normal use is to type:
.s;Do? LOG, DTE, ENDLOG
.br;This is almost an analogue of the SYSDPY T display but is meant
for hardcopy instead of video.
It also outputs the queue of unacknowledged messages for each NDB.
Since that information changes often, it is a good idea to take it
with a grain of salt.
If you get the same output twice, it will be valid.
Since detecting errors in this data is not easy, in loop mode
this will print only during the summary times.
.br;This produces a quicky display of the data stored in the .GTNET
A better way to see this data is to use the SYSDPY "_\" command.
Keep in mind that this data is available only in systems that have
FTCMSR turned on and that the system is shipped with it turned
.br;This outputs the DDCMP messages statistics for all -11s in
the network (the LB.OCN/LB.ICN data).
Errors are defined to be any change in the error counts.
.br;This is the analogue of the SYSDPY T data from the -11s' point
It outputs the NCL message data for each active SCB for each -11
from the network.
Since detecting errors in this data is not easy, in loop mode
this will print only during the summary times.
.br;This outputs SCNSER statistics since the last execution of the
command or since startup if this is the first time.
The items listed are:
.ls.le;RCV - _# of receive interrupts
.le;XMT - _# of transmit done interrupts
.le;ECHO - _# of characters echoed
.le;ACT - _# of lines active.
Receive active is when there is input in the buffer and
transmit active is when LDLOIP is set (I think).
If both are active, that will increase the count by 2.
.le;SIZE the number of characters SCNSER is willing to buffer
.le;BAUD - average baud rate (based on sum of receive and transmit
The asterisks following make a histogram, one per every 500 baud.
.br;This command makes NETTST constantly repeat the command line
until a fatal error is detected or a character is typed on the TTY.
In the case of the monitoring commands, there will be a sleep between
invocations of the command line to keep from loading the system you're
trying to measure.
LOOP can also be used with any other command to repeat it.
For example, "LOOP RIPPLE" sends continuous ripple patterns to the currently
open device or reads and checks them from the current input device.
LOOP alone is not recommended - it gobbles machine time.
.br;This specifies the number of milliseconds to sleep before NETTST
repeats the command line when looping.
.br;This specifies the number of minutes
before a summary printout is done.
Summaries are based on clock time, not the time since the command was
typed, so by using the defaults, summaries should appear within
10 seconds of the start of each 10 minute interval during the day.
.hl 2 Logging facility
.BR;This specifies the log file that will record output request by
future LOG commands.
Special treatment is accorded different logging devices.
Once opened, most devices (LPT, TSK, MTA) will be left open until
explicitly released; however DSK and TTY will be released
before NETTST prompts for a new command and before the hibernate
encountered when looping on a monitoring command.
.br;The remainder of the output from this command string will be
directed to the log file instead of the TTY.
.br;This releases the logging device if it is still open.
(Which should not be the case if it is a DSK or TTY.)
Do? LOG TTYMAP:ALL
Do? LOOP LOG OCNMON, SCBMON, NDBMON
.hl 2 Miscellaneous
.br;OCNMON and SCBMON access the -11s in the network symbolically
using symbol tables output by a special version of DDT11.
As versions change, these have to be replaced and that may be
done via this command.
Generally what you want to do is:
.br;This pauses the specified amount of time in milliseconds and may
be useful in exercising race conditions.
If more than one PAUSE command is typed on a line, the time spent
sleeping will equal the last value typed on the line, for example
.s;will sleep for two intervals of 2 seconds each.
This happens because NETTST's command decoder evaluates all the arguments
before executing the commands.
commands that take values have only one location dedicated for
that value, so in the example NETTST first stores 1000, then 2000, and then
executes the pause twice, both times with a sleep time of 2 seconds.
.br;If DDT is loaded, this will call it via a "PUSHJ P," type call.
To get back to NETTST, type "CPOPJ$G".
Easier though is to do this patch:
.S;Then all you have to do to get back is type "$P".
.br;This prints a list of the current commands.
.br;This closes any open files and returns to the monitor.