NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-64
memory slot
memory slot. A physical, labeled space for a memory unit or a dual inline memory module
(DIMM). Memory slots are located on the processor board of an HP NonStop™
S-series processor multifunction (PMF) customer-replaceable unit (CRU).
memory unit. A unit consisting of a dual inline memory module (DIMM) or a single inline
memory module (SIMM) that is installed in groups of four on the processor and
memory board (PMB) of the processor multifunction (PMF) customer-replaceable unit
(CRU) in an HP NonStop™ S-series server. Memory units constitute the processor
memory. The memory units in certain models of PMF CRU are not replaceable by
customers or in the field.
message monitor process (MSGMON). A helper process for the ServerNet cluster monitor
process (SNETMON) that runs in each processor on every node of a ServerNet
cluster. MSGMON is started by the persistence manager process, $ZPM. It performs
duties for SNETMON in those instances where SNETMON needs an agent in each
system processor. In addition, MSGMON monitors the connections within the
processor and reports changes back to SNETMON when required.
method. An object-oriented term for a function, procedure, or routine.
MFIOB. See multifunction I/O board (MFIOB).
MIC. See Media Interface Connector (MIC).
microcode. Any machine code or data that can run in a microprocessor. HP produces two
types of microcode for HP NonStop™ systems: volatile and nonvolatile. Volatile
microcode is loaded into the volatile random-access memory (RAM) of some types of
printed wiring assemblies (PWAs) and is not retained in a host PWA when power to the
PWA is interrupted. For nonvolatile microcode, see firmware. See also millicode.
midplane. A board that has connectors, on one or both sides of the board, into which circuit
board assemblies plug. Midplanes are located inside enclosures.
millicode. The system’s lowest-level machine-dependent code, often coded in assembler
language. TNS/R millicode is functionally similar to the microcode on TNS systems.
The system has several types of millicode, including machine interrupt handlers,
operating system primitives, routines implicitly called from native-compiled code,
emulators for TNS floating-point arithmetic, and emulators for privileged-only or long-
running TNS machine operations.
MIPS Computer Systems, Incorporated. RISC processor manufacturer.
MIPS region of a TNS object file. The region of a TNS object file that contains MIPS
instructions and the tables necessary to execute the instructions in accelerator mode
on a TNS/R system. Accelerator creates this region and writes it into the TNS object
file.