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Hawk 2 (Wide bus) Family Install Guide, Rev. C
J6 and J1-Auxiliary
Jumper
Installation Jumper Function Description
A
3
,A
2
,A
1
,A
0
* Drive ID on SCSI Bus. The drive ID is binary
coded positionwise i.e., jumper in position A
3
is
drive ID 8, in position A
2
is drive ID 4, in position
A
1
is ID 2, position A
0
is ID 1 and no jumpers
is ID 0. Default is ID = 0.
Either J1-auxiliary or J6 may be used to select
drive ID. Both should not be used at the same
time, because at some future time when the ID
is changed the user could fail to configure both
J1-auxiliary and J6 the same. Default is ID =
0.
SSP* No jumper ever installed. Used only as a cable
connection for the reference index signal
(REFIND+) (J6 Pin 6, bottom) for sync spindle
feature. J6 pin 10 is GRD. Installing a jumper
between pins 5 and 6 will cause an erroneous
drive ID indication.
BUSY Connection for optional external Drive Busy
indicator.
VENDOR Connection for optional indicator for custom
use.
UNIQUE See host system documentation.
EXTERNAL Optional indicator indicates some external to
FAULT drive fault occurred.
*See notes on page 28 and 29
32