Compaq AlphaServer ES45 Service Manual page 209

Table 6–1 SRM Environment Variables (Continued)
Variable Attribute
pk*0_host_id NV
pk*0_soft_term NV
sys_serial_num NV
tt_allow_login NV
Description
Sets the controller host bus node ID to a value
between 0 and 7.
0 to 7—Assigns bus node ID for specified host
adapter.
Enables or disables SCSI terminators for optional
SCSI controllers. This environment variable
applies to systems using the Qlogic SCSI
controller, though it does not affect the onboard
controller.
The Qlogic SCSI controller implements the 16-bit
wide SCSI bus. The Qlogic module has two
terminators, one for the 8 low bits and one for the
high 8 bits. There are five possible values:
off—Turns off both low 8 bits and high 8 bits.
Low—Turns on low 8 bits and turns off high 8
bits.
High—Turns on high 8 bits and turns off low 8
bits.
On—Turns on both low 8 bits and high 8 bits.
Sets the system serial number, which is then
propagated to all FRUs that have EEPROMs.
The serial number can be read by the operating
system.
Enables or disables login to the SRM console
firmware on alternative console ports.
0—Disables login on alternative console ports.
1—Enables login on alternative console ports
(default setting).
If the console output device is set to serial, set
tt_allow_login 1 allows you to log in on the
primary COM1(MMJ) port, or alternate COM2
port, or the VGA monitor.
If the console output device is set to graphics,
set tt_allow_login 1 allows you to log in through
either the COM1(MMJ) or COM2 console port.
System Configuration and Setup 6-15