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The Set Character Attributes command selects the visual attributes for displayed characters.
Separate parallel areas within memory store characters and their attributes. A convenient visual
model is to think of the display as being a composite view through translucent planes, as shown
in Figure 5-9. The Set Character Attributes command can be thought of as a way to select which
attributes will be active in the attributes plane when upcoming characters are placed in the
character plane for display.
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After the Set Character Attributes command has been sent, new characters displayed by the TCS
appear with the selected attributes unless the NOCHANGE Attribute Mode is set. If scrolling
causes characters to move, the characters’ attributes move with them, regardless of where the
characters are placed on the screen.
One or more attributes can be changed at a time. Changing an attribute does not turn off the other
attributes already selected. An attribute can be turned on or off individually, or all attributes can
be turned off at once.
The TCS can display characters with the following attributes:
•
Highlight
The character is displayed with increased intensity.
Color TCS: Each of the eight basic colors has an associated highlight color which is
substituted for the currently programmed foreground color when the attribute is selected. The
highlight colors are generally a lighter or brighter version of the basic color.
Содержание Dynapro ET TCS
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