- HELP
EVDMC is a level 2 diagnostic intended to aid in the maintenance and
installation of DMC-11 or DMR-11 communication links. This program
is DCLT (Data Communication Link Test) Compatible.
- ATTACH
A sample of attaching a DMC or DMR on a VAX 11/780:
DS> ATT DW780 SBI DW0 3 4 ; Attaches the UBA to the SBI
or
DS> ATT DW750 HUB DW0 ; Attaches the UBA to CMI for 11/750
or
DS> ATT DW730 HUB DW0 ; 11/730
or
DS> ATT DWBUA HUB DW0 n 4 ;for VAX 8200 ; n = BUA node ID
or
DS> ATTACH SBIA HUB SI0 ;for VAX 8600
DS> ATTACH DW780 SI0 DW0 3 4
DS> ATT DMC11 DW0 XMx0 760100 300 5 ; Attach XMx (x=A,B,..) to UBA
DS> SELECT XMx0 ; Select the attached DMC/R-11.
Only the first DMC/R-11 will be tested as the VAX end of the
communication link.
- SECTIONS
There is only one section to EVDMC, which is run every time a START is
typed.
- REQUIREMENTS
EVDMC revision 3.1 requires VMS 4.2.
VAX diagnostic supervisor 8.2
ESSAA - 780, 785
ECSAA - 750
ENSAA - 730
EBDAA - 8200
EDSAA - 8600
- DEVICE
EVDMC supports DCLT testing of DMC/R-11 to DMC/R-11 links. The
VAX DMC/R-11 DCLT program is capable of exercising a VAX to PDP-11
DMC/R-11 link.
- EVENT
This DCLT program uses only one event flag:
Event Flag 1 Clear The DMC-11 or DMR-11 is run in full
duplex mode
Set The DMC-11 or DMR-11 is run in half
duplex mode. Initialized to half duplex
mode in the DVINIT subroutine after a
DS> START.
- CONTROL-C
If the DCLT program is waiting for timeout when a Control-C is typed,
the Control-C is echoed, but control will not be returned to the
Diagnostic Supervisor until the timer completely expires. (Max. 3 secs.)
- QUICK
This DCLT program does not implement the QUICK feature. Execution
mode is specified at the time of the DCLT Run Command
- SUMMARY
The Summary command will cause EVDMC to do the same as a DCLT Print.
Optionally prints the DDCMP Error counters provided by the DMC driver
and prints the DCLT Event Log which contains the last 45 events that
occurred and the information associated with each event.
- DCLT
DCLT is the acronym for Data Communications Link Test. The DCLT
project is a group of programs aimed at detecting failures in
the modems, communication link, or computer equipment. The goal
of DCLT programs is to test the link, not the communciations
equipment. Therefore, it would be wise to run the diagnostics
specific to the device before attempting to test the link.
- COMMANDS
Once a DCLT program is started, the initialization code is executed.
After that a DCLT prompt will appear at whcih time the operator can
enter any of the DCLT Message, Run, or Statistical Commands.
- CLEAR
Format: Clear list where list is Transmitlist or Expectlist
for example: C T
- SET
Format: SEt list=type/Size=n/Copy=m
where list is Transmitlist or Expectlist
where type is Ones,Zeroes,Ccitt,Itep,1alt
0alt, or " A-Z 0-9"
for example SE T=CC/S=25/C=5 ; which puts 6 CCITT messages on the
; transmit list
- SET_EXPECT
Sets the expect list to the current copy of the transmit list. The previous
content of the expect list are lost.
Format: set expect = Transmit
Example: SE E=T
- SHOW
Format: SHow list where list is Transmitlist or Expectlist
- RUN
Format: Run Mode=type/switch(es)
where type is Active,Passive,TRansmit,Receive,
TAlk,Listen, or Downlineload
where /switches is any one or combination of:
/Status,/Check,/Echo,/Pass=n
/NOStatus,/NOCheck,/NOEcho,
/Loop=Internal or Cable
- EXIT
Returns program execution to the DS> command level
- PRINT
Optionally prints the DDCMP Error counters provided by the DMC driver
and prints the DCLT Event Log which contains the last 45 events that
occurred and the information associated with each event.
- SCRIPT
Indirect command files can contain commands appropriate to the DCLT>
or DS> command level and are invoked by a "@file-spec" at the DS> level.
a sample command file may look something like:
DS> START
DCLT> SET TRANSMIT=CCITT/SIZE=25/COPY=5
DCLT> SET EXPECT=CCITT/SIZE=25/COPY=5
DCLT> RUN MODE=ACTIVE/LOOP=INT/STATUS/PASS=3