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W6-LI System Board Manual
Although they are faster than DRAM,
they hold less data and are more ex-
pensive.
Synchronous - Protocols that require
the clocks of communicating ma-
chines or devices to be coordinated.
Synchronous Cache - A type of cache
that uses a clock signal to latch the
inputs and the data output. This struc-
ture spreads the cache access across
two or three cycles while maintaining
a bandwidth of one access per cycle.
Improves performance by 5-10%.
Terabyte -
A measurement for very large
storage capacity. One Terabyte is equiva-
lent one-thousand gigabytes, one-million
megabytes, or 1,099,511,627,766 bytes.
VESA - An acronym for Video Elec-
tronics and Standards Association.
VESA Local Bus (VL-Bus) - A high
performance bus designed by VESA.
A 32-bit version of the ISA bus which
operates at the speed of the
computer’s CPU. See PCI, EISA and
ISA.
VID - Voltage Identification. A hard-
ware mechanism used by the CPU to
tell its power regulator what voltage
to set.
VRM - Voltage Regulator Module.
Supplies CPU specific voltages for the
Secondary CPU.
Warm Boot - Restarting the system
by simultaneously pressing the
<Ctrl>, <Alt> and <Delete> keys.
Glossary
76
Wide SCSI - A SCSI-2 enhancement
that allows data to be transferred 16
or 32 bits at a time on the SCSI bus
instead of 8 bits at a time.
Write-Back Cache - Upon a cache
hit, the cache is updated and the main
memory is not affected. Upon a cache
miss, only the main memory is up-
dated.
Write-Through Cache - Upon a
cache hit, the cache and the main
memory are updated. Upon a cache
miss, only the main memory is up-
dated.