pTAL Conversion Guide

Glossary
pTAL Conversion Guide—527302-002
Glossary-4
TNS accelerated mode
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).
TNS object file. An object file created by a TNS compiler or the Binder. A TNS object file
contains TNS instructions. TNS object files can be processed by the Accelerator or by
the TNS Object Code Accelerator (OCA) to produce to produce accelerated object
files. A TNS object file can be run on TNS, TNS/R, and TNS/E systems.
TNS Object Code Accelerator (OCA). A program optimization tool that processes a TNS
object file and produces an accelerated file for the TNS/E architecture. OCA augments
a TNS object file with equivalent Intel® Itanium® instructions. TNS object code that is
accelerated runs faster on TNS/E systems than TNS object code that is not
accelerated.