RadiSys EPC-5A, Hardware & Software Reference Manual

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EPC-5A Hardware Reference
G-4
CMOS Save and Restore (CSR): A System BIOS feature that allows the user to
backup the contents of CMOS RAM (contained within the real time clock) to
the BIOS Flash device to be restored later if necessary (such as when the real
time clock battery dies).
Cylinders/Heads/Sectors (CHS): A specification of disk drive operating parameters
consisting of the number of disk cylinders, disk drive read/write heads, and
disk sectors.
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D
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Default: The state of all user-changeable hardware and software settings as they are
originally configured before any changes are made.
Disk Operating System (DOS): One or more programs which allow a computer to
use a disk drive as an external storage device. These programs manage
storage and retrieval of data to and from the disk and interpret commands
from the computer operator.
Driver: A software component of the operating system which directs the computer
interface with a hardware device. The software interface to the driver is
standardized such that application software calling the driver requires no
specific operational information about the hardware device.
Dual In-Line Package (DIP): A semiconductor package configuration consisting of a
rectangular plastic case with two rows of pins, one row on each lengthwise
side.
Dynamic Random Access Memory (DRAM): Semiconductor RAM memory devices
in which the stored data will not remain permanently stored, even with the
power applied, unless the data are periodically rewritten into memory during
a refresh operation.
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E
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Electrically Erasable Programmable ROM (EEPROM): Specifically, those
EPROMs which may be erased electrically as compared to other erasing
methods.
Error Checking and Correction: A feature of the T2 chipset that enables it to detect
single or multi-bit errors in DRAM reads and correct single bit errors. This
feature requires that all banks of DRAM use x36 (parity) SO DIMMs.
Extended Capabilities Port (ECP): An enhancement of the standard PC parallel port
that allows high speed bi-directional data transfers and other features.