RadiSys EPS-6315, Hardware Reference Manual, Page: 116 / 123

EPC
®
-6315 Hardware Reference
106
Flash
recovery
See Brecovery .
Flash
update
See BIOS update .
force
update
See Brecovery .
FPGA
(Field Programmable Gate Array) A large, general-purpose logic device that is
programmed at power-up to perform specific logic functions.
FPM
(Fast Page Mode) A “standard” type of DRAM that is lower performance
than EDO.
GB or GByte
(Gigabyte) Approximately one billion (US) or one thousand million (Great Britain)
bytes. 2^30 = 1,073,741,824 bytes exactly.
h
(Hexadecimal) A base-16 numbering system using numeric symbols 0 through 9 plus
alpha characters A, B, C, D, E, and F as the 16 digit symbols. Digits A through F are
equivalent to the decimal values 10 through 15.
hang
A condition where the system microprocessor suspends processing operations due to
an anomaly in the data or an illegal instruction.
header
A mechanical pin and sleeve style connector on a circuit board. The header may exist
in either a male or female configuration. For example, a male header has a number
and pattern of pins which corresponds to the number and pattern of sleeves on a
female header plug.
host bus
The address/data bus that connects the CPU and the chipset.
I/O
(Input/Output) The communication interface between system components and
between the system and connected peripherals.
IDE
(Integrated Drive Electronics) A hard disk drive/controller interface standard. IDE
drives contain the controller circuitry at the drive itself, as compared to the location
of this circuitry on the computer motherboard in non-IDE systems. IDE drives
typically connect to the system bus with a simple adapter card containing a minimum
of on-board logic.
INT
(Interrupt Request) A software-generated interrupt request.
IRDA or
IrDA
(Infra-red Data Association) A specification for high-speed data communication
using infrared drivers and receivers for short-range wireless data transmission.
IRQ
(Interrupt Request) In ISAbus systems, a microprocessor input from the control bus
used by I/O devices to interrupt execution of the current program and cause the
microprocessor to jump to a special program called the interrupt service routine. The
microprocessor executes this special program, which normally involves servicing the
interrupting device. When the interrupt service routine is completed, the
microprocessor resumes execution of the program it was working on before the
interruption occurred.
ISA
(Industry Standard Architecture) A popular microcomputer expansion bus
architecture standard. The ISA standard originated with the IBM PC when the
system bus was expanded to accept peripheral cards.