Motorola MVME1603 Installation And Use Manual page 216

Glossary
VGA
virtual address
VL bus
VMEchip2
VME2PCI
volatile memory
VRAM
G
L
Windows NT™
O
S
S
XGA
A
R
Y
Y Signal
GL-12
Video Graphics Array (IBM). The third and most common
monitor standard used today. It provides up to 256 simultaneous
colors and a screen resolution of 640 x 480 pixels.
A binary address issued by a CPU that indirectly refers to the
location of information in primary memory, such as main
memory. When data is copied from disk to main memory, the
physical address is changed to the virtual address.
See VESA Local bus (VL bus).
MCG second generation VMEbus interface ASIC (Motorola)
MCG ASIC that interfaces between the PCI bus and the
VMEchip2 device.
A memory in which the data content is lost when the power supply
is disconnected.
Video (Dynamic) Random Access Memory. Memory chips with
two ports, one used for random accesses and the other capable of
serial accesses. Once the serial port has been initialized (with a
transfer cycle), it can operate independently of the random port.
This frees the random port for CPU accesses. The result of adding
the serial port is a significantly reduced amount of interference
from screen refresh. VRAMs cost more per bit than DRAMs.
The trademark representing Windows New Technology, a
computer operating system developed by the Microsoft
Corporation.
EXtended Graphics Array. An improved IBM VGA monitor
standard that provides at least 256 simultaneous colors and a
screen resolution of 1024 x 768 pixels.
Luminance. Parameter that determines the brightness (but not the
color) of each spot (pixel) on a CRT screen in color or B/W
systems.