DEFINING YOUR OWN CHARACTERS WITH IBMMODE
Downloading fonts in IBM mode requires downloading character Dot
Patterndata and character Index Table data. Dot patterndata controls which
pinsfire when printing acharacter. Index Table data is placed in a“lookup
table” that provides information on where Dot Pattern data is stored in
memory and defines certain attributesof the character.
Assigning the download character set
You can define one or more download character sets for later use in IBM
mode. Before you start to design your characters. you must define what
character set(s)you want to download.
The character width on which you design the characters depends upon the
character setas shown below:
Character set Character width Character ID
Draft characters 90
LQ pica characters 35 1
LQ elite characters 29 ~
LQ proportional 17-41 3
Afteryou havedecided yourdownload characterset, youmusttell theprinter
where the download character data to be stored, and how many download
character setsyou will define.
The firstdownload font area starts from <800F>h, and you must enter 0for
the Format byte. This Format byte indicatesto the printer tha[ the RAM is
storedthe download character set.
Followingthe formatbyte. you mustenter the Character IDdata. If youwant
to define more character set, add 128to the Character ID data.
Thesecond areastartsfrom <8911>h,the thirdarea startsfrom <9212>h,and
thelast areastarts from<9B13>h. Butyouneed not enterthe Formatbyte for
these area.