Dot Matrix Printer Users Manual

chapter 5

DOC

Withthisprinteryoucancreatenewcharactemandsymbols,downloadtheir

dotdata,andhavethemprintedinplaceof selectedcharactersintheregular

characterset.Charactemthatcanbegeneratedinthiswayrangefromsimple

but useful symbols like the check mark through complex Chinese or

Japanesecharactem.

Regular charactem are permanentlystored in the printer’s ROM, but

charactm youdesignare downloadedandstoredin RAM for use.

DESIGNING YOUR OWN DRAFT CHARACTERS

Designingand printingyour own charactershas two requirements:first,

designingtheshapeofthecharacter,calculatingthedatanecessarytomake

the shape, and sendingthat datato the printer,and secondly,sendingthe

commandto printthedownloadedcharactersinsteadof theregularcharac-

ters. There are a numberof designconstraintsfor downloaddraft quality

characters:

● Thematrixor gridon whichyoudesignthe charactersis six boxeswide

by nineboxeshigh.

s Horizontally,dotsmaybecenteredinabox, ormaystraddlealine,making

the actualcharactergrid 11dotswideby9 dotshigh.Vertically,dotscan

onlybe centeredin a box.SeeFigure5-1.

F S O c b i b o s t v l o t g