Service manual

SRM Console Commands and Environment Variables B-5
Table B-2 Environment Variable Summary (Continued)
Environment
Variable Function
memory_test Specifies the extent to which memory will be tested. For
DIGITAL UNIX systems only.
ocp_text Overrides the default OCP display text with specified text.
os_type Specifies the operating system and sets the appropriate
console interface.
pci_parity Disables or enables parity checking on the PCI bus.
pk*0_fast Enables fast SCSI mode.
pk*0_host_id Specifies the default value for a controller host bus node ID.
pk*0_soft_term Enables or disables SCSI terminators on systems that use the
QLogic ISP1020 SCSI controller.
sys_model_num Displays the system model number and computes certain
information passed to the operating system. Must be restored
after a PCI motherboard is replaced.
sys_serial_num Restores the system serial number. Must be set if the system
motherboard is replaced.
sys_type Displays the system type and computes certain information
passed to the operating system. Must be restored after a PCI
motherboard is replaced.
tga_sync_green Specifies the location of the SYNC signal generated by the
DIGITAL ZLXp-E PCI graphics accelerator option.
tt_allow_login Enables or disables login to the SRM console firmware on
other console ports.