Near Letter Quality Mode (NLQ) One feature of the MPS 1000 is the Near Letter Quality mode, which allows you to print documents in high-quality lettering. NLQ can be turned on by setting DIP switch 1- 5 to ON; you can return your printer to draft quality mode by setting the same DIP switch back to OFF. It's also possible to use ASCII code to print in Near Letter Quality regard- less of how the DIP switch is set. Issuing CHR$(31) puts you in NLQ mode, while CHR$(159) turns off NLQ to return to printing draft quality letters. Example: 10 OPEN 4,4 20 PRINT #4, CHR$(31) "NEAR LETTER QUALITY ON:" 30 PRINT #4, CHR$(159) "NEAR LETTER QUALITY OFF" 40 CLOSE4 Result: NEAR LETTER QUALITY ON:
NEAR LETTER QUALITY OFF Reverse printing In reverse printing the letters and characters are white on a black background instead of the usual black on a white background. The code that turns this effect on is CHR$(18), and the one that turns it off is CHR$(146). Enter and run the following program to see this mode in action. Be sure to include the semicolon at the end of line 40. Again type NEW to erase the previous program before you enter this program. NEW 10 OPEN3,4 20 PRINT#3,CHR$(18)"REVERSE PRINTING" 30 PRINT#3, "REVERSE PRINTING OFF" 40 PRINT#3,CHR$(18)"REVERSE"CHR$(146); 50 PRINT#3," AND STANDARD PRINTING" 60 CLOSE 3 ;;l °''' :!
•i=i •ii ;t I~ 11 I~ lEl REVERSE PRINTING OFF •H:l'J:!:W:! AND STANDAm.> ,- : ·n I NT l NU The printout above shows the two ways that reverse printing is turned off: By the ending of a print line By the CHR$(146) code. 39