Star Micronics NP-IO manual When you refer the Appendix C, you’ll find many characters

L		71
	n Printing characters in the control code area
	When you refer the Appendix C, you’ll find many characters
	are printed in the control code area. (Remember that the low-
	order control codes are the ASCII codes 0 through 31 plus 127,
	and the high-order control codes are 128 through 159 plus 255.)
	These codes don’t normally print characters on paper, rather
	they cause the printer to change modes. To make them print as
	normal characters requires an extra command. For example,
	the command to “normalize” the high-order control codes is
	(ESC) “6”. Try this program with the DIP switch 1-6 on.
i.
	10 ' Demo of characters in high-order control
L	code	area
	20 LPRINT CHR$(27);"6";
L	30 FOR I=128 TO 159
	40 LPRINT CHR$(I);
	50 NEXT	I
	60 LPRINT CJ.-lR$(27);"7"
	70 END

i.

6..

That’s where the italic international characters have been

stored. So the (ESC) “6” command without the (ESC) “R” gives you access to the international characters. The (ESC) “7” turns these characters back into control codes.

The low-order control codes can also be defined, but not all of

c..them can be printed easily. The (ESC) “I” 1 command makes

them printable, and the (ESC) “I” 0 returns them to normal.

L.Just as the higher control codes hide the italic international characters, the lower control codes hide the roman international characters.

Let’s see how these commands work with the following pro- gram:

10 ' Demo of characters in control code area

20 LPRINT CHR$(27);"11";

30 FOR I=0 TO 6