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Glossary
C-8
N
nonmaskable interrupt (NMI): An interrupt that can be neither masked nor
disabled.
O
object file: A file that has been assembled or linked and contains machine
language object code.
off chip: A state of being external to a device.
on chip: A state of being internal to a device.
P
peripheral: A device connected to and usually controlled by a host device.
program cache: A fast memory cache for storing program instructions
allowing for quick execution.
program memory: Memory accessed through the C6x’s program fetch
interface.
PWR: Power; see PWR module.
PWR module: PWR is an API module that is used to configure the
power-down control registers, if applicable, and to invoke various
power-down modes.
R
random-access memory (RAM): A type of memory device in which the
individual locations can be accessed in any order.
register: A small area of high speed memory located within a processor or
electronic device that is used for temporarily storing data or instructions.
Each register is given a name, contains a few bytes of information, and
is referenced by programs.
reduced-instruction-set computer (RISC): A computer whose instruction
set and related decode mechanism are much simpler than those of
microprogrammed complex instruction set computers. The result is a
higher instruction throughput and a faster real-time interrupt service
response from a smaller, cost-effective chip.