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ERASING DOWNLOAD CHARACTER DEFINITIONS
After you have defined a set of characters (a whole new al- phabet, perhaps) you may want to go back to using mostly standard characters with a few new
a command which will restore the default characters. This command copies all the characters from the standard character ROM into download RAM:
(For STAR mode)
<ESC> “9;” 0
(For IBM mode)
<ESC> ‘I:”0 0 0
Since it will copy all characters into the download area, it will wipe out any characters that are already there. So it’s important to send this command to the printer before you send any download characters you want to define.
DEFINING PROPORTIONAL CHARACTERS
Except for the actual width, defining characters for propor- tional printing is exactly the same as defining normal width download characters. Characters can range from 5 to 11 dots wide. This means that characters can be as narrow as
the normal width.
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Besides being able to specify the actual width of the character,
in which the printed character starts and the dot column in which the character ends. Why, you may ask, would you want to defme a character this way instead of merely defining the overall width
of the character? Because SD- 1O/15’s proportional character definitions can also be used to print normal width characters, which are eleven dot columns wide. And by centering even the narrow characters in the complete grid (look at the “i” in Figure
The command format for proportional character definition is exactly the same as you have learned; the only difference is the
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