Townshend Computer Tools DAT-Link User Manual page 31

2.4 Machine Speci c Instructions
For the Indy computers you will required a cable with a high-density 50 pin D
connector on one end and a 50 pin Centronics type connector on the other end.
This may also be called a SCSI-1 to SCSI-2 cable. It should be available from
your SGI hardware supplier or can be ordered from your
MICROD).
For the O2 workstations, you will need a cable with a wide 68-pin D connector on
one end and a 50 pin Centronics type connector on the other end. This may also be
called a SCSI-3 to SCSI-1 cable. It should be available from your SGI hardware
supplier. Note: If you want to mix both wide (68-pin) and narrow (50-pin) SCSI
devices to the O2's bus, you have connect the 68-pin devices rst on the bus, and
then daisychain the 50-pin devices, like the
Choosing a SCSI ID
You must select a SCSI ID for the
drive, tape drive, CD ROM or other device on the same SCSI bus. Be aware that
some models have 2 SCSI controllers. For example, the O2's external SCSI bus is
bus 1, bus 0 being the internal one.
SCSI ID's can be chosen in the range 1 to 6. Once an ID is chosen, set the SCSI
ID switch on the rear of the
DAT-Link
read when the
DAT-Link
the .
The SCSI ID's of all devices connected, including the
by using the command either while the system is running or from the System
hinv
Monitor when the system is shut down. See the users manuals supplied with your
workstation for details on using
Connecting the
DAT-Link
The next step is to connect the
unterminate the SCSI bus temporarily, it is recommended that you shut-down and
turn o the computer before making the connection.
The Options switches on the rear of the
down. Then connect the
DAT-Link
is the last device on the SCSI bus, be sure to connect the provided SCSI
terminator between the cable and the
Once it is hooked up and powered on you can reboot the computer. If you have
trouble rebooting, verify that the SCSI ID selected on the
DAT-Link
The 's SCSI ID switch goes up to 9, but the 8 and 9 settings are only for factory
7
testing. The computer itself uses SCSI ID 0. Although SCSI ID 7 should work, IRIX does not
appear to recognize it.
DAT-Link
DAT-Link
that is not already in use by a disk
DAT-Link
accordingly.
is powered up, so if you change it, be sure to power-cycle
.
hinv
DAT-Link
to the computer. Since it is necessary to
DAT-Link
DAT-Link
to the computer using the SCSI cable. If the
DAT-Link
's SCSI connector.
DAT-Link
supplier (CB-
.
Note that this switch is only
7
DAT-Link
, can be checked
should be set with all switches
DAT-Link
was not one
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