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PROGRAMMING WITH BASIC
As an example of programming the printer on Microsoft BASIC, we have
listed the program for the IBM-PC. This program runs in the downloadable
condition.
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‘ Set c c
E$=CHR$( 27 )
‘
E c
D$=E$+’’xO”
‘ Draft quality
L$=E$+”X1“+E$+ “k”
‘Letter quality
RM$=L$+CHR$(O) ‘Roman character
H$=CHR$(9)
‘Horizontal tab
PI$=E$+”P”
‘Pica pitch
‘ Start printing
WIDTH “LPT1:’’.255
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
LPRINT
E ; ‘Set HT
RM$;’’Resident fonts are:”
H$;D$;’’Draft characters,”;
H$;L$;CHR$(0) ;“Roman characters,”
H$;L$;CHR$(l) ;“Sanserif characters,”
H$;L$;CHR$(2) ;“Courier characters,”
H$;L$;CHR$(3); “Prestige characters,”
H$;L$;cHR$(4) ;“Script characters.”
RM$;’’Print pitches are:”
F?$;PI$;’’Pica pitch (10 CPI),”;
H$;E$; ’’M’’Eliteite pitch (12 CPI),”
H$; E$; ’’g’’ Semiecondensedsed pitch (15 CPI),”
H$;PI$;
CHR$(15);
‘Select condensed print
“Condensed pica pitch (17 CPI),”
H$; E$; ’’M’’Condensedsed elite pitch (20 CPI),”;
CHR$(18)
‘Cancel condensed print
H$;E$;’’P1”;
‘Select proportional spacing
PI$;UNormal proportional,”
H$; CHR$(15) ;’’Condensed proportional,” ;
CHR$(18);
E$;’’PO” ‘Cancel proportional spacing
H$; E$; ’’wl’’D oublebheightght ,“; E$;’’wO”
H$;E$; ’’Wl’’Douhlehle width, “;E$;’’WO”
H$;CHR$( 28) ;’’E’’;CHR$(2) ;“Triple width.”;
CHR$(28) ;’’E’’;CHR$(O)
RM$;’’Various line and character spacings:”
FOR 1=1 TO 7
LPRINT E$;’’A’’;CHR$(I);
‘Line spacing set
LPRINT E$;n “;CHR$(I);
‘Increase character space
LPRINT H$;’’THE SPACINGS ARE CHANGEDU
NEXT 1
FOR 1=’7 TO 1 STEP -1
LPRINT E$;’’A’’;CHR$(I);
‘Line spacing set
LPRINT E$;” “;CHR$(I);
‘Increase character space
LPRINT H$;’’THE SPACINGS ARE CHANGED”
NEXT I
LPRINT E$;’’3’’;CHR$(3O) ;
‘Set 1/6” line spacing