pTAL Guidelines for TAL Programmers

Glossary
pTAL Guidelines for TAL Programmers—527256-002
Glossary-3
release version update (RVU)
release version update (RVU). A collection of compatible revisions of NonStop OS
software products, identified by an RVU ID, and shipped and supported as a unit. An
RVU consists of the object modules, supporting files, and documentation for the
product revisions. An RVU also includes a set of documentation for the overall RVU.
RISC. See reduced instruction set computing (RISC).
RVU. See release version update (RVU).
TAL. See HP Transaction Application Language (TAL).
TAL compiler. The compiler that takes TAL or pTAL source code as input and generates
TNS object code. Compare to pTAL compiler and EpTAL compiler.
TNS. Refers to fault-tolerant HP computers that support the HP NonStop™ operating
system and are based on microcoded complex instruction-set computing (CISC)
technology. TNS systems run the TNS instruction set. Compare to TNS/R and TNS/E.
TNS accelerated mode. A TNS emulation environment on a TNS/R or TNS/E system in
which accelerated TNS object files are run. TNS instructions have been previously
translated into optimized sequences of MIPS or Intel® Itanium® instructions. TNS
accelerated mode runs much faster than TNS interpreted mode. Accelerated or
interpreted TNS object code cannot be mixed with or called by native mode object
code. See also TNS Object Code Accelerator (OCA). Compare to TNS/R native mode
and TNS/E native mode.
TNS interpreted mode. A TNS emulation environment on a TNS/R or TNS/E system in
which individual TNS instructions in a TNS object file are directly executed by
interpretation rather than permanently translated into MIPS or Intel® Itanium®
instructions. TNS interpreted mode runs slower than TNS accelerated mode. Each
TNS instruction is decoded each time it is executed, and no optimizations between
TNS instructions are possible. TNS interpreted mode is used when a TNS object file
has not been accelerated for that hardware system, and it is also sometimes used for
brief periods within accelerated object files. Accelerated or interpreted TNS object code
cannot be mixed with or called by native mode object code. See also TNS Object Code
Interpreter (OCI). Compare to TNS accelerated mode, TNS/R native mode, and TNS/E
native mode.
TNS mode. The operational environment in which unaccelerated TNS instructions execute
by inline interpretation. Compare to TNS accelerated mode and TNS/R native mode.
TNS object code. The TNS instructions that result from processing program source code
with a TNS compiler. TNS object code executes on TNS, TNS/R, and TNS/E systems.
TNS Object Code Interpreter (OCI). A program that processes a TNS object file and
emulates TNS instructions on a TNS/E system without preprocessing the object file.
See also TNS Object Code Accelerator (OCA).