Specifications

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Micronics M54Hi-Plus System Board Manual
EISA - An acronym for Extended Industry
Standard Architecture. EISA is a bus design
standard which is fully backward compatible with
the ISA bus. Although it is a 32-bit bus, it only
runs at 8MHz. See PCI, VESA, and ISA.
EPP - An acronym for Enhanced Parallel Port. A
standard which increases the capabilities of the
parallel port.
EPROM - Acronym for Erasable Programmable
Read Only Memory. A type of ROM chip that
can be programmed with relatively simple tools
that will retain its data until erased. It can only be
erased by exposing the circuitry in the chip to
ultraviolet light. See also Flash ROM.
External Cache - Cache which is external to the
CPU. See Cache.
Fast SCSI - A SCSI data transfer standard which
supports a rate of up to 10MB/sec.
Fast Wide SCSI - A SCSI data transfer which
supports a rate of up to 20MB/sec.
Flash ROM - A type of ROM chip that will retain
its data until erased. It can be erased or
reprogrammed by supplying it with +12V of
voltage. See ROM and EPROM.
Full Size - A standard system board size
measuring approximately 12" x 13.75".
Gigabyte - A disk storage capacity measurement.
Approximately one thousand megabytes or
1,073,741,824 bytes.
IDE - An acronym for Integrated Device
Electronics. A standard for communicating
between a hard drive and a computer.
Internal Cache - Cache which is built into the
CPU. See Cache.
ISA - An acronym for Industry Standard
Architecture. A well-established bus standard
originating with the IBM AT. See PCI, VESA,
and EISA.
Jumper - a small plug that fits over and shorts
pins on a circuit board. Jumpers allow the
various functions of the board to be enabled or
disabled.
Kilobyte (KB) - 1,024 bytes.
L1 Cache - See Internal Cache.
L2 Cache - See External Cache.
LBA - An acronym for Logical Block Address-
ing. Any IDE hard drive larger than 528MB.
Math coprocessor - A microprocessor designed
specifically for performing mathematical
calculations. A math coprocessor performs these
calculations faster than the CPU, and by doing so,
frees the CPU for other activities.
Megabyte (MB) - 1,024 Kilobytes or 1,048,576
bytes.
Mini AT - A standard system board size
measuring approximately 8.5" x 9.5".
Mode 1 - An IDE data transfer standard which
supports transfer rates of up to 5.22 Mbytes/sec.
Mode 2 - An IDE data transfer standard which
supports transfer rates of up to 8.33 Mbytes/sec.
Mode 3 - An IDE data transfer standard which
supports transfer rates of up to 11.1 Mbytes/sec.
Mode 4 - An IDE data transfer standard which
supports transfer rates of up to 15.5 Mbytes/sec.
Parallel - A form of data transmission in which
the data is sent one byte at a time over several
wires that each carry one byte. In parallel
transmission, all the bytes arrive simultaneously,
as opposed to serial transmission in which bits
arrive one by one.
Parallel Port - A connection for a printer or
similar peripheral. Generally, parallel ports are
output only. See Bidirectional Parallel Port and
ECP.
PCI - An acronym for Peripheral Component
Interconnect. A high performance 32-bit or 64-
bit bus developed by Intel Corporation. PCI is
designed to be independent of the hardware
architecture to ensure compatibility with future
computer systems. See VESA, EISA, and ISA.
Pentium- A high performance 64-bit CISC
processor designed and manufactured by Intel
Corporation. As of this writing, Pentium is the
highest performing X86 processor available.