Note
EGA and VGA controller boards are available with higher
resolutions than the maximum defined by the standards.
The optional EGA video system for this computer provides
up to 1056x352 dot resolution for a text display of 132
columnsx44
lines, and up to
800x600
resolution for color
graphics.
Monitor Types
There are many different types of video monitor available.
Some of the major ones are described below.
❏
Composite Video:
With a 300
x
200 resolution, this type of monitor is
usually used with home computers. They are not
recommended for use with your system.
❏
TTL Monochrome:
These monitors provide up to
1000x350
resolution,
with either a green or amber colored screen. Primarily
intended for text only applications, these monitors can
run Hercules-compatible graphics programs, although
applications requiring full CGA or EGA color
compatibility will be difficult, if not impossible, to use.
A TTL monochrome monitor and a Hercules compatible
controller board will meet your computer system’s basic
video display monitor needs.
❏
RGB Color:
RGB stands for Red, Green and Blue, and indicates that
each of the
primary
colors are separately driven by the
video controller board. RGB monitors cover a broad
range of resolutions from 320x200 up to the higher
EGA ranges of 720x480. RGB color monitors are very
C-4
Video Monitor Systems
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