Star Micronics NB-15 user manual Proportional, print

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Here, the value of n defines the print style to be selected. The value of n can range from 0 to 255, which is the range of values that can be stored in one eight-bit byte. If you look at each bit in this byte, you’ll find that each one represents a printing style variation. Adding the binary values of the selected bits gives the value of n for a particular combination of print styles.

Table 5-10 shows the decimal values of the bits in the Master Print byte. To calculate the value n for a particular combination of printing styles, just add the values of the features that you want to combine.

Table 5-10

Values of mixing print styles for Master Print

Bit	1 Print style		I	Decimal value
1	1 Elite mint			1
2	Proportional	print		2
3	Condensed	print		4

4(Not used)

I5	1 Boldface mint	I	16	I
6	Expanded print		32

7(Not used)

8	Underline	128
For example, if you want to select elite expanded boldface
print,	you would calculate	the value of n like this:	-
	Elite	1
	Boldface	16	-
	Expanded	32
	n=	49	-

The command would look like this:

CHR$(27);“!“;CHR$(49)

To better understand the way the print modes work, consider that each mode except pica (pica is the default) has a separate switch that can turned on and off via software. Once the switch is on, it stays on until turned off. When two modes that conflict are turned on at the same time, the printer must choose which one to use.