Star Micronics LC24-200 user manual Assigning the character data

●The minimumwidthof a characteris five dots.

●Dots cannotoverlap.

●You may define any positionin the ASCII table.

PhotocopythegridinFigure5-1tohelpdesignyournewcharacters.Wewill use a tiny representationof a telephonesymbolfor our example.

Figure 5-1. Use this grid (or one similar to il) to define your own characters

Assigning the character data

Now,we calculatethe verticalnumericalvaluesof thecolumnsof dots,and enter them underneaththe grid. Each verticalcolumn (whichhas a maxi- mumof 24 dots)is first dividedinto threegroups(or two groupsfor super/ subscripts)ofeightdots.Eachgroupofeightdotsis representedbyonebyte, whichconsistsof eightbits.

Thisis wherethenumbersdowntheleftsideof the gridcomein.Noticethat there is a numberfor each row of dots and that each numberis twice the numberbelowit. By makingthesenumberspowersof two we can take any combinationof dots in a verticalcolumnand assignthcm a uniquevalue.

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