V1.0 Vig625M Motherboard Manual
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This causes a slight flicker, so generally non-interlaced mode is better if the monitor
supports it.
L.E.D.
Light Emitting Diode - a light which indicates activity - for example hard disk access.
PCI
Peripheral Component Interface. It became apparent to manufacturers that the 8MHz AT
ISA BUS on the standard PC was just not fast enough for today's applications, and so
PCI was invented. It is a high speed data bus that carries information to and from
components - known as 'Local Bus'.
RAM
Random Access Memory - the memory used by the computer for running programs and
storing data.
ROM
Read Only Memory - a memory chip which doesn't lose its data when the system is
switched off. It is used to store the System BIOS and VGA BIOS instructions. It is slower
than RAM.
Shadow Memory
The BIOS is normally stored in ROM. On certain systems it can be copied to RAM on
power up to make it go faster. This RAM is known as shadow memory. The System
BIOS is responsible for this copying.
Super VGA
Additional screen modes and capabilities provided over and above the standard VGA
defined by IBM.
VGA
Video Graphics Array - the graphics standard defined by IBM and provided on IBM's
PS/2 machines.
