Digital Equipment VAX 4000 500A, Operation

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• To access the DUP driver from VMS:
a. Connect to DUP and load its driver by using the VMS system
generation utility (SYSGEN) as shown below.
$ MCR SYSGEN
SYSGEN> CONNECT/NOADAPTER FYA0
SYSGEN> EXIT
$
b. Access the DUP driver by setting host to the device you want to
write-protect.
SET HOST/DUP/SERVER=MSCP$DUP/TASK=PARAMS <node_name>
where <node_name> is the device node name. It is listed, in
parentheses, in the SHOW DEVICE DI display.
2. At the
PARAMS>
prompt, enter
SET WRT_PROT 1
to write-protect the ISE to
which you are connected.
Note
To verify that you set host to the intended drive, enter the command
LOCATE at the PARAMS> prompt. That command causes the drive’s
Fault indicator to blink momentarily.
3. Enter
SHOW WRT_PROT
to verify that the WRT_PROT parameter is set to 1.
4. Enter
WRITE
at the
PARAMS>
prompt to save the device parameter. The change
is recorded in nonvolatile memory.
5. Enter
EXIT
at the
PARAMS>
prompt to exit DUP.
This is an example of setting a hardware write-protect through firmware.
>>>SET HOST/DUP/DSSI/BUS:0 1 PARAMS
Starting DUP server...
Copyright (c) 1992
Digital Equipment Corporation
PARAMS>SET WRT_PROT 1
PARAMS>WRITE
PARAMS>SHOW WRT_PROT
Parameter
Current Default Type Radix
--------- ---------------- ---------------- -------- -----
WRT_PROT 1 0 Boolean 0/1
PARAMS>EXIT
Exiting...
Stopping DUP server...
>>>
Operating the System Options 3–7