Star Micronics NX-1001 User Manual page 95

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How theprogram works
Thisprogrambeginsby assigninga numberof printercommandsto BASIC
stringvariables(lines 1000to 1090).Youcan findmostof thesecommands
near the beginningof chapter4.
The WIDTH"LPT1:"255 statementin line 1110meansinfiite line width.
It preventsthe IBM-PCfrom insertingunwantedcarriagemtums and line
feeds in graphicsdata.
Actualprintingbeginsin line 1120.Usingthe preassignedcommands,the
programprints samplesof its diffenmtfonts, includinga line showingall
stylesin italics,followedby samplesof the printpitches,then somedouble
and quadruple-sizedprinting.
Next comes the central attractionof the program: a line of text printed
fourteentimesinexpandingandcontractingloops togiveabarreleffect.The
workisdoneby fourprintercommands:a commandsettingtherightmargin
(line 1400);a centeringcommand(line 1420);a commandto vary the line
spacing(lines 1440and 1490);and a commandto micro-adjustthe space
betweencharactm (lines 1450and 150Q).
Nexttheprogramnmmnsto normalspacingandgivesa demonstration ofthe
printer's word-processingabilities:bold printing,underlining,subscripts,
etc.
The row of automobilesin the nextprintedline is createdby downloading
two new characterpatterns,whichare printedin placeof the character"e"
(character60). Detailscan be foundin Chapter5.
The final part of the programuses dot graphicsto print some "SW" logos
withvariousdensities.Thedotpatternof thelogowasoriginallylaid outon
graphpaper,then convertedto the data in lines 2400to 2630with the help
of a calculator.Each number~presents eightverticaldots. (See "Graphics
commands"in Chapter4 for details.).
The patternis printedin four rows,each row is eightdotshigh and 65 dots
wide.Lines 1800to 1850madthedotdataintoa stringarrayvariablenamed
LOGO$.Line 1860sets the line spacingto 8/72 inch so that the rows will
connectvertically.The loop in lines 1870to 1960doesthe printingin four
passesof the print head.
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