top - download
⟦930ac0ca0⟧ Wang Wps File
Length: 10073 (0x2759)
Types: Wang Wps File
Notes: Spelunked
Names: »~ORPHAN71.00«
Derivation
└─⟦6f17b967f⟧ Bits:30006000 8" Wang WCS floppy, CR 0035A
└─ ⟦this⟧ »~ORPHAN71.00«
WangText
…02…CPS/SDS/001
…02…BHJ/800115…02……02…
CAMPS
SYSTEM
DESIGN
SPECIFICATION
…02……02…CAMPS
5.4 W̲A̲T̲C̲H̲D̲O̲G̲ ̲H̲W̲
5.4.1 S̲u̲m̲m̲a̲r̲y̲ ̲o̲f̲ ̲R̲e̲q̲u̲i̲r̲e̲m̲e̲n̲t̲s̲
5.4.1.1 S̲u̲b̲s̲y̲s̲t̲e̲m̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
5.4.1.1.1 G̲e̲n̲e̲r̲a̲l̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
Themain feature of the watchdog HW packages is to enable
monitoing and controlling of correct configuration
in the CAMPS system:
- Receive error reports from the PU's
- Receive "keep alive" messages from the PU's
- Monitoring status of hardware
- Control physical device allocation e.g. isolate
a HW devce
- Determine a switchover in case of a PU failure
The WD consists of 4 major components:
- Watchdog CPU (WPU)
- Watchdog CPU adaptor (WCA)
- watchdog panel controller (WPC)
- Crate configuration adaptor (CCA)
The WPU is a standard LTU which boots its program from an EPROM
located on the WCA. 4 x V24 parts ensure the WD capability of
interfacing e.g. 2 PU, 1 VDU and 1 LP.
The WPU communicates with the CCA's, BTM-Y's and WPC
through a 16 p flotcable coniguration bus, which uses
a serial communication based on the single chip PAM
system.
The WCA also contains a failsafe circuit, which in
case of a failure in the WD CPU, will switch over to
the WPC, the system is hereby in manual mode.
The WPC contains of a singl chip processor, which major
task is to scan the switches set on its frontpanel
and convey the settings to the CCA's and BTM-Y's via
the configuration bus, using PAM serial communication.
Status is read back and displayed on the frontpanel
of the WC. In CAMPS the WPC is not used so, in manual
mode no monitoring or control is performed, and isolation
of a physical device has to be done in the crates via
manual switches.
The reason for not using the WPC facility is to avoid,
that in the casethe engineer has forgotten to update
the switches on the frontpanel, we will have a wrong
configuration if the WD CPU fails.
The CCA contains 1 PAM circuit, 1 A10 converter and
a number of multiplexed latches. The PAM circuit is
an addressable asnchronous receiver and transmitter.
Via the configuration bus it receives two eleven-bit
word in a serial data stream. The first of the incoming
words contains the PAM address and if the address matches,
the PAM will receive the next eleven-bit dat word.
This word is used as a pointer to the latch you want
to control or monitor. The PAM will after receipt of
the second word, transmit back status of the latch
in two eleven-bit words. Each of the transmitted words
contains eight data bits, eve parity bit, start and
stop bit.
5.4.1.1.2 R̲e̲f̲e̲r̲e̲n̲c̲e̲ ̲t̲o̲ ̲o̲t̲h̲e̲r̲ ̲S̲u̲b̲s̲y̲s̲t̲e̲m̲
CR80D
TDX
RACK
5.4.1.1.3 E̲x̲t̲e̲r̲n̲a̲l̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲s̲
None.
5.4.1.1.4 B̲l̲o̲c̲k̲d̲i̲a̲g̲r̲a̲m̲
A blockdiagram showing the interfaces of this package
is depiced on fig. 5.4.1.1.4 -1.
5.4.1.2 S̲u̲b̲s̲y̲s̲t̲e̲m̲ ̲F̲u̲n̲c̲t̲i̲o̲n̲s̲
This section describes how the WD va V24 CCA's and
BTM-Y's controls and monitors the different types of
assemblies within the CAMPS system.
a) Processor Unit Assembly
b) Channel Unit Assembly
c) TDX Crate Assembly
5.4.1.2.1 P̲r̲o̲c̲e̲s̲s̲o̲r̲ ̲U̲n̲i̲t̲ ̲A̲s̲s̲e̲m̲b̲l̲y̲
The monitoring and contrl of the two PU's is done through.
- 2 x V24 interface
- Crate Configuration Bus
The PU's send status and "alive" messages to the watchdog
via the 2 x V24 lines.
The monitoring and control of switches and voltages
is done via the serial Coniguration bus and the CCA.
ref. fig. 5.4.1.2.1.
The frontpanel of the MAP includes an auto/manual switch
which controls the connect/disconnets state of the
MIA and the 2 TIA's. (Ref. fig. 5.4.1.2.1-1)…86…1
…02… …02… …02… …02…
Fig. 5.4.1.1.4-1…86…1 …02… …02… …02… …02…
Fig. 5.4.1.2.1-1…01…A,B,E, F's functions are described overleaf.…86…1 …02… …02… …02… …02…
C̲C̲A̲ ̲F̲u̲n̲c̲t̲i̲o̲n̲s̲ ̲(̲P̲U̲)̲ ̲S̲u̲m̲m̲a̲r̲y̲
Referring to fig. 5.4.1.2.1-1.
…02……02……02…Analog Digital Digital
i̲n̲p̲u̲t̲s̲ i̲n̲p̲u̲t̲ o̲t̲p̲u̲t̲
̲
A. Supervision of analog
voltages (+5, +/- 12V) 3 -
-
B. 1. Controllong the connect/
disconnect state of the
MIA + TIA's - -
1
2. Issue "Maintenance Mode"
to the MAP - -
1
3. Monitoring the state of
the auto/manuel switch - 1
-
E. Individual selftest
results - -
-
F. Issue "Master Clear"
command to the MAP - -
1
5.4.1.2.2 C̲h̲a̲n̲n̲e̲l̲ ̲U̲n̲i̲t̲ ̲A̲s̲s̲e̲m̲b̲l̲y̲
The CCA control and monitoring path to the CU is, to
improve the WD control, given on extra set of lines,
e.i. 2 control and 2 monitor lines.
Via the 2 control lines the WD controls the "take ownership"
command as follows for all units togetheri.e.
a) Enable via I/O Bus A, enable via I/O Bus B
b) Disable via I/O Bus A, enable via I/O Bus B
c) Enable via I/O Bus A, disable via I/O Bus B
d) Disable via I/O Bus A, and - B
In manual mode it is possible to establish an individual
connection of each of the units (i.e. diskcontroller,
floppy-disk controller and LTU) by a three-state switch
placed on th front panel of each unit. This possibility
can be used during an integration or maintenance phase,
see fig. 5.4.1.2.2.-1.
The use of the 2 extra monitor lines is
- One indicating to the WD if one or more of the
seitches being out of auto.
-The other monitor the results of the built in tests.
C̲C̲A̲ ̲F̲u̲n̲c̲t̲i̲o̲n̲s̲ ̲(̲C̲U̲)̲ ̲S̲u̲m̲m̲a̲r̲y̲
Referring to fig. 5.4.1.2.2-1.
Analog Digital Digital
I̲n̲p̲u̲t̲s̲ i̲n̲p̲u̲t̲s̲ o̲u̲t̲p̲u̲t̲
̲
A. onitor dualized supply
voltages (+5, +/- 12V) 6 -
-
B. Monitor (wired-or) state
of front panel switches
(Auto/non auto) - 1
-
C. Controlling "Take owner-
ship" - enable/disable - -
2
D. Monitors card self-test results
(wired-or)
-
1
-
E. Individual self-test
results - -
-…86…1
…02…
…02…
…02…
…02…
Fig. 5.4.1.2.2-1…01…A,B,C,D's functions…86…1 …02… …02… …02… …02…
5.4.1.2.3 T̲D̲X̲ ̲C̲r̲a̲t̲e̲ ̲A̲s̲s̲e̲m̲b̲l̲y̲
The control 8 monitoring of this crate is done via
a BTM-Y module, which is a CCA integrated with the
BTM-module.
The BTM-Y assigns either the TDX us # 1, TDX Bus #
2 or none to the internal crate TDX Bus. The assignment
is controlled by the WD or manuel by two switched on
the front panel of the BTM-Y.
One of the switches is an auto/manuel switch controlling
the assignment source. In auto te WD is in control
else the other switch gives TDX Bus # 1, TDW Bus #
2 or none connected.
The WD monitors the auto/manuel switch for an auto/non
auto indication.
In addition to the above mentioned functions the WD
also minotors the power suppl voltages in the different
assemblies.
C̲C̲A̲ ̲F̲u̲n̲c̲t̲i̲o̲n̲s̲ ̲(̲T̲D̲X̲)̲ ̲S̲u̲m̲m̲a̲r̲y̲
Referring to fig. 5.4.1.2.3-1.
…02……02……02… Analog Digital Digital
I̲n̲p̲u̲t̲s̲ I̲n̲p̲u̲t̲s̲ O̲u̲t̲p̲u̲t̲s̲
A. Monitor supplyvoltages
(+5, +/- 12V) 3 -
-
B. Monitor results (wired-
or) of individual self-
test routines - 1
-
C. 1. Controlling bus
assignment - -
2
2. Monitor state of auto/
manual switch - 1
-
D.* Monitor TX-controller
status (RS, TS, FS,
Col1/2 - -
-
E. Result of individual self-
test if any - -
-
* In the two crates with the TDX-controllers a V
24 monitoring point is implemented.…86…1 …02…
…02… …02… …02…
Fig. 5.4.1.2.3-1…01…A,B,C,D,E's functions…86…1 …02… …02… …02… …02…
5.4.1.2.4 W̲a̲t̲c̲h̲d̲o̲g̲ ̲S̲e̲l̲f̲-̲c̲o̲n̲t̲r̲o̲l̲
A fail safe circuit is implemented between the WD CPU
and the WD panel controller, in case of a failure an
automatic switching to manual is prefored. This ensures
that in case of a failure or a repair the WD CPU can
be removed without offlining the system.
5.4.1.2.5 V̲D̲U̲ ̲&̲ ̲L̲P̲
The VDU, which includes a keyboard, and the LP are
connected to thee WD via one V24 interface. By means
of these evices the system engineer is able to decide
and execute control of the system.
5.4.1.3 S̲u̲b̲s̲y̲s̲t̲e̲m̲ ̲C̲o̲n̲t̲r̲o̲l̲
5.4.1.3.1 S̲y̲n̲c̲h̲r̲o̲n̲i̲z̲a̲t̲i̲o̲n̲
N.A.
5.4.1.3.2 H̲a̲r̲d̲w̲a̲r̲e̲ ̲C̲o̲n̲t̲r̲o̲l̲
Configuration control can be operated in the following
ways.
- Automaically by the WD program
- Manually by the VDU + keyboard through the WD
- Manually via switches on each crate assembly indepent
of the WD
Built in tests in the various modules may be activated
in the following way by the WD.
- Manually by he VDU and keyboard through the WD
- Automatically by the WD program.…86…1 …02… …02…
…02… …02…
Fig. 5.4.1.2.5-1…01…Crate Configuration bus…86…1 …02… …02… …02… …02…
5.4.1.3.3 E̲r̲r̲o̲r̲ ̲R̲e̲p̲o̲r̲t̲i̲n̲g̲
Status of built in tests TBD.
Status from the TDW controller via V24 TBD.
To check the WD itself for failures, a special circuit
which is completely ndependent of the other electronics
has been developed. It is built up around a timer acting
as a one shot OS in case of the retriggerable monitoring
OS not receiving signal ofter enough, the WD CPU will
switch over to the WPC.
Upon detection of failure the WD program starts an
audible signal, generate a headline report on the VDU
and a detailed report on the LP.
5.4.1.4 C̲h̲a̲r̲a̲c̲t̲e̲r̲i̲s̲t̲i̲c̲s̲
5.4.1.4.1 P̲e̲r̲f̲o̲r̲m̲a̲n̲c̲e̲
The watchdog has a selctable rate from 50 to 19200
baud.
- WD to PU
