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Graphics
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INTRODUCTION
Appendix D
This section contains a description of the terminal's graphics functions and how they are used.
The information and the examples are intended for use in developing programs to control the
graphics functions. Additional information on how to use the graphics features from the
keyboard is contained in the User's Manual.
GRAPHICS DISPLAY
You can display graphics data by addressing points in a 512 by 390 array.
The graphics and alphanumeric data are displayed in the same area on the screen but are
stored in separate RAM memories. This allows you to read or modify graphics and alphanu-
meric data separately.
NOTE: Alphanumeric characters overlay or mask out the graphics display. Thus enhance-
ments (blinking, inverse video, etc.) alter the appearance of graphics already on the
screen. The data in the graphics display memory, however, remains unchanged.
0,389
0.0
512
x
390
511.389
511.0
D-1
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