System Setup and Configuration
3.8 Firmware Commands and Utilities Used in System Configuration
Table 3–3 (Cont.) Boot Devices Supported by the KA681/KA691/KA692/KA694
Boot Name
Controller Type
Device Type(s)
Network
EZA0
On-board Ethernet
–
XQcu
DESQA
–
PROM
PRAu
MRV11
–
PRB0
Customer EPROM
space
–
Note
For diskless and tapeless systems that boot software over the
network, select only the Ethernet adapter. All other boot devices
are inappropriate.
3.8.5.2 Setting Boot Flags
The Virtual Memory Boot (VMB) action is qualified by the value passed to
it in R5. R5 contains boot flags that specify conditions of the bootstrap. The
firmware passes to VMB either the R5 value specified in the BOOT command
or the default boot flag value specified with a SET BFLG command. The VMB
boot flags are listed in Table 3–4.
Refer to Appendix A for examples.
Table 3–4 Virtual Memory Bootstrap (VMB) Boot Flags
Bit
Name
Description
0
RPB$V_CONV
Conversational boot. At various points in the system boot
procedure, the bootstrap code solicits parameters and
other input from the console terminal.
1
RPB$V_DEBUG
Debug. If this flag is set, the OpenVMS operating system
maps the code for the XDELTA debugger into the system
page tables of the running system.
(continued on next page)
System Setup and Configuration 3–53
