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The resulting file should be sent to the printer using the COPY command,
eg:
A>COPY NLQ.DAT PRN
I
prior to printing document files. Of course, this command can also be
included in a batch file.
PROGRAMMING USING BASIC
As discussed earlier, a version of BASIC is usually supplied with PC-
compatible machines. With this BASIC, characters are sent to the printer
using the LPRINT command, and contml codes are defined using the
CHR$() function.
Sample program
The following lines of BASIC give examples of how the printer may be
driven from within your own programs:
1000
' Set control codea
1010 E$=CHRS(27)
'Escape code
1020 D$=E$+"xO"
'Draft quality
1030 L$=E$+"xl"
'Letter quality
1040 F$=E$+"k"
'Select font
1050 C$=F$+CHR$(O)+L$
'Select Courier
1060 HS=CHRS(P)
'Horizontal tab
1070 P$=E$+"P"
'Pica pitch
1080 '
Start printing
1090 WIDTH "LPT1:",255
1100 LPRIRT E$:"D";CHR$(3):CHR$(27);CHR$(O);
1110 LPRIRT C$;"Font settings:"
1120 LPRIRT H$;D$;"Draft characters,";L$;
1130 LPRIRT H$;F$;CHR$(O);"Courier charactera,"
1140 LPRINT H$;F$;CHR$(l);"Sanserif characters,";
1150 LPRIRT H$;F$;CHR$(2);"Letter-Gothic."
1160 LPRIRT H$;F$;CHR$(3);"0rator charactera.";
1170 LPRIRT H$;F$;CHR$(4);"Script characters,"
1180 LPRIRT H$;F$;CHR$(5);"0CR-B charactera.";
1190 LPRIRT H$;F$;CHR$(6):"TW-Light characters."
1200 LPRIRT H$;F$;CHR$(7);"Cinema charactera"
1210 '
1220 LPRIRT
1230 LPRIRT C$:"Print pitches are:"
1240 LPRIRT. H$;P$;"Pica pitch (10 CPI),":
1250 LPRIRT H$;E$;"M";"Elite pitch (12 CPI)."
1260 LPRIRT H$;P$;
1270 LPRIRT CRRS(15);
'Select condensed print
1280 LPRIRT "Condenaed pica pitch (17 CPI).";
1290 LPRIRT H$;E$;"M":
"Condensed elite pitch (20 CPI).";
1300 LPRIRT CHR$(18)
'Cancel condensed print
90