Star Micronics 4 manual Othergraphicsdensities

Each FX-850 emulationgraphicscommandyou send does three things:it turnsonthegraphicsmode,specifieshorizontaldensity,andsayshowmany columnswide the cominggraphicsdata will be.

Graphicscommandsallprint at the sameverticaldensityor “resolution”— 72dotsperverticalinch.Thecommandsalllookthesame;wheretheydiffer is in horizontaldensity.

Here’ske commandfor the 60 dots-per-inchdensity:

<ESC>K nl n2

The n2 is the numberof 256-columngroups(eitherO,1 or 2). And the n] representsunits,the numberof leftovercolumns.

So to printjust 150columnsof graphics,you wouldsend this command: <ESC>K 1500

That translatesto 150+ (Ox 256)= 150columns.

Buttoprint260columnsofgraphicsatthesamedensity,youwouldsendthis

command:

<ESC>K 4 1

This one translatesto 4 + (1 x 256)= 260 columns.

Rememberto put exactlythe rightnumberof columnsin your command. Otherwise you’ll inadvertentlyuse text as graphics data, or vice versa. Anotherhint:in BASIC,theWIDTHstatementcanhelpyoukeepunwanted carnage returnsfrom messingup your graphics.

5.6.3 Othergraphicsdensities

Let’ssummarize:Whenprogramminggraphics,youfirstsetthelinespacing toproducetheeffectyouwant(typicallyat7/72or 8/72inch).Thenyousend your graphicscommandand data. Finally,you reset line spacingand any othertext settingsas needed.

How do text settingsaffect graphics?Neitherextendedprint nor double- stnke bold work in graphicsmode.The <DEL>commanddoesn’twork in graphicseither. And if you’reusing “most significantbit” settingsfor an olderkind of computer,graphicsmode ignoresthem.

OK, let’s have a look at graphicscommandsfor differentdensities.

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