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Graphics
Text
Text can be placed in either alphanumeric memory or graphics memory. If the terminal is set
for alphanumeric text, the text is directed to alphanumeric memory. Alphanumeric text can be
scrolled, edited, or erased without affecting the graphics image. If you select graphics text
(Ec
*
d 5),
text goes into graphics memory. Text to be written to the graphics memory can be
scaled or rotated if the terminal is set to either UNSCALED or UNSC 4014 Mode. Refer to
Graphics Text in this appendix for additional information.
When text is written to the graphics memory, the graphics cursor is moved to indicate where
the next character will be stored. (The alphanumeric cursor is only used when data is stored in
the alphanumeric memory.) This differs from terminals that have only one mode for text and
display the graphics cursor only when waiting for graphic input from the user.
SCALED MODE GRAPHICS TEXT. In Scaled Mode, text is initially written into the
graphics memory. The size is fixed to allow for 35 lines of text. The text angle is set at 0 degrees
and unslanted. The text origin is set to the left and bottom. These settings allow the "Page Full"
feature to work properly and existing software to run without changes. Ifyou do not require the
Page Full feature, you cannot change the text settings. You can redirect the text to the
alphanumeric memory.
UNSCALED MODE GRAPHICS TEXT. In Unsealed Mode, the text size is unchanged and
graphics text mode is not initially turned on. Text is stored in the alphanumeric memory unless
the graphics text mode is specifically enabled.
Normal Addressing:
Short Addressing:
Note: "SP" means
"space" character
y=o
x=o
Y=31
X=256
A B C
0
- " - - " - - " - - " - -
SP , SP
@
SP • SP
@
SP •
(
@
SP ,
(
@
SP , SP
@
•
@
•
(
@
@
Turn on
graphics mode
y=o
x=o
A
- " -
SP , SP
@
, SP@
Return to
alphanumeric mode
B
0,31
0,0
A
C
256,31
256,0
o
Figure D-23. Determining Address Bytes
D-51
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