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

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-11
CAE
CAE. See common applications environment (CAE).
canonical form. A standard way of representing TNS machine register values in assigned
system registers, at certain synchronization points within accelerated code. Each live
16-bit TNS register value resides in its home system register, right-justified and sign-
extended to fill the 32-bit or 64-bit register. Register values that have no future uses
are considered dead; their home system registers might contain undefined values.
The TNS machine state must be in canonical form at all register-exact points where the
program might switch to or from interpreted execution mode. At all other program
locations, Accelerator optimizations might cause TNS register values to be carried in
various noncanonical forms such as combined TNS register pairs.
canonical input mode. For an Open System Services (OSS) process, a terminal input
mode in which data is not made available to the process until an entire logical line
(delimited by a newline, EOF, or EOL character) is entered. This mode is sometimes
called line mode or nontransparent mode. Contrast with noncanonical input mode.
CAP. See cartridge access port (CAP).
Carbon Copy. A remote operations software application that enables a workstation in one
location to access, through a modem, a workstation in another location. Carbon Copy
is included with all system consoles, and service providers use it to dial in to system
consoles at customer sites. See also remote access.
card cage. A structure made up of slots that hold components such as disk drives and
ServerNet adapters.
carrier. An electrical signal that carries data.
cartridge access port (CAP). The component on a tape library where you insert cartridges
into and remove cartridges from the library.
caught signal. A programmatic signal that is delivered to a process that has a signal-
handling function for it. When the signal is caught, the process is interrupted, and the
signal-handling function executes.
CBB. See common base board (CBB).
CCITT. International Telegraph and Telephone Consultative Committee.
CCSA. See Common Communication ServerNet adapter (CCSA).
CE. Customer engineer. See service provider.
cell. See storage pool.
central processing unit (CPU). Historically, the main data processing unit of a computer.
HP NonStop™ servers have multiple cooperating processors rather than a single CPU.
See also processor.