Owner`s manual

VMB
The virtual memory boot program (VMB.EXE) that boots the operating
system. VMB is the primary bootstrap program and is stored on the boot
device. The goal of booting is to read VMB from the boot device and load
the operating system.
XBI
Lines in the self-test display that show the status of DWMBB adapters and
of VAXBI nodes. See also DWMBB.
XMI
The 64-bit, high-speed system bus.
XMI Corner
The portion of an XMI module that connects to the backplane and provides
an electrically identical interface for every XMI node.
Glossary–6