Star Micronics NX-10 user manual Lprint CHR$27ACHR$ICHR$27w2

Line 40 changes the line spacing. The command (ESC)“A” CHR$(n) changes the line spacing to n/72 of an inch. The loop that is started in line 20 increases the value of n (the variable I in this program) each time it is executed. So the line spacing in- creases as the program continues. Line 30 just shortcuts the loop when I= 13, since BASIC won’t let us send CHR$(13) without adding an unwanted CHR$(lO) to it. Finally, the (ESC) “2” in line 80 resets the line spacing to 6 lines per inch. This is a shortcut that is the same as (ESC)“A”CHR$(12).

When you run this program with the DIP switch l-6 off (IBM mode), you cannot get the printout as shown above.

The (ESC) “A” CHR$(n) command in IBM mode only defines the line spacing as n/72 of an inch; the (ESC) “2” command changes the line spacing to the amount defined by the previous (ESC) “A”.

So: you need to change the following lines to the previous pro- gram as shown below for the IBM mode:

40LPRINT CHR$(27>;"A";CHR$(I);CHR$(27);w2';

80LPRINT CHR$(27); "A";CHR$(12);CHR$(27);"2"

You may wonder why they picked l/72 of an inch as the incre- ment for the line spacing command. There’s a good reason: the dots that the printer makes are l/72 inch apart. So this means that you can vary the line spacing in increments as fine as one

dot - unless you want finer spacing, like one third dot spac- ing.

The (ESC)“3”CHR$(n) command sets the line spacing in in- crements of l/216 inch. Change line 40 in your program so it is like this:

40 LPRINT CHR$(27);"3";CHR$(I);

. and run the program again. Now the results will look like this: