Compaq ES40CSLP Installation, User & Service Manual page 60

Operation
Table 3-4 SRM Environment Variables (Cont.)
Variable
memory_test
ocp_text
os_type
pci_parity
pk*0_fast
pk*0_host_id
pk*0_soft_term
3–14 Compaq ES40CSLP Rackmount System Installation/User/Service Guide
Attributes Description
NV Specifies the extent to which memory will be tested on Tru64
UNIX. The options are:
Full—Full memory test will be run. Required for OpenVMS.
Partial—First 256 MB of memory will be tested.
None—Only first 32 MB will be tested.
NV Overrides the default control panel display text with specified
text.
NV Sets the default operating system.
vms or unix—Sets system to boot the SRM firmware.
nt—Sets system to boot the AlphaBIOS firmware.
NV Disable or enable parity checking on the PCI bus.
On—PCI parity enabled (default value)
Off—PCI parity disabled
Some PCI devices do not implement PCI parity checking, and
some have a parity-generating scheme in which the parity is
sometimes incorrect or is not fully compliant with the PCI
specification. In such cases, the device functions properly so long
as parity is not checked.
NV Enables fast SCSI devices on a SCSI controller to perform in
standard or fast mode.
0—Sets the default speed for devices on the controller to
standard SCSI.
If a controller is set to standard SCSI mode, both standard and
fast SCSI devices will perform in standard mode.
1—Sets the default speed for devices on the controller to fast
SCSI mode.
Devices on a controller that connects to both standard and Fast
SCSI devices will automatically perform at the appropriate rate
for the device, either fast or standard mode.
NV 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
NV
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.
diff—Places the bus in differential mode.