5.20.10
pk*0_soft_term
The pk*0_soft_term environment variable enables or disables SCSI terminators for
optional SCSI controllers. This environment variable applies to systems that use the
QLogic SCSI controller, though it does not affect the onboard controller.
The QLogic ISP1020 SCSI controller implements the 16-bit wide SCSI bus. The QLogic
module has two terminators, one for the low eight bits and one for the high eight bits.
To list the controllers on your system, enter the
show device
command. SCSI controllers
begin with the letters “pk” (for example, pka0). The third letter is the adapter ID for the
controller. Replace the asterisk with the adapter ID letter when entering the
set
pk*0_soft_term
command.
The value of
pk*0_soft_term
takes effect only after you reset the system by pressing the
Reset button (if configured) or by issuing the
init
command (Jumper J22 pins 13-14 must be
inserted for the halt/reset button to operate as a reset button.)
Syntax
set pk*0_soft_term
value
The options for
value
are:
off
Disables termination of all 16 bits.
low
Enables low eight bits and disables high eight bits.
high
Enables high eight bits and disables low eight bits.
on
(default)
Enables all 16 bits.
diff
Places the bus in differential mode.
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hp AlphaServer TS15 Owner's Guide
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