Alpha 1000 User's Guide Page 167

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operator control panel
The panel located on the front of the system, which contains the power-up
/diagnostic display, DC On/Off button, Halt button, and Reset button.
PALcode
Alpha Privileged Architecture Library code, written to support Alpha processors.
PALcode implements architecturally defined behavior.
PCI
Peripheral Component Interconnect. An industry-standard expansion I/O bus
that is the preferred bus for high-performance I/O options. Available in a 32-bit
and a 64-bit version.
portability
The degree to which a software application can be easily moved from one
computing environment to another.
porting
Adapting a given body of code so that it will provide equivalent functions
in a computing environment that differs from the original implementation
environment.
power-down
The sequence of steps that stops the flow of electricity to a system or its
components.
power-up
The sequence of events that starts the flow of electrical current to a system or its
components.
primary cache
The cache memory that is the fastest and closest to the processor.
processor module
Module that contains the CPU chip.
program mode
The state in which the system console terminal is under the control of a program
other than the console program.
Glossary–11
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