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I
Definedraft downloadcharacter(s)
Both
<ESC>
&
<NUb
<cl>
<C2>
C*
cdl>
...
~n>
IBh
3Dh
OOh
<cl>
<C2>
<?0
'4>
...
ain>
I
27
61
0
<d>
<C2>
<m'
4>
...
cdn> I
The commandaboveenablesthedefinitionof "soft''characters t o be downloaded.
This commandis only valid if "DOWNLOAD"has been selectedin the RAM
USAGEmenuof theMemorySwitch(seeChapter3 fordetails),andthedraftmode
hasbeen selectedbeforethiscommandis executed.
Thefollowingrulesareobsexved. < cl> andec2> arebinaryvalueswhichdetermine
the characterrange which will be replacedby downloadeddata. For instance,if
<cZ>=20hand cc2>.30h, all charactersfrom20h through30hwillbe overwriuen
by thedownloaded data.If a downloaded characteris storedin thearea80hthrough
9Fh, it can only be printed in the characterset #2 mode. It is possibleto store
downloadedcharactersin the part of rhe character set reserved for
IBM
block
graphics(BOhrhroughDFh,F4handF5h),but thesecharacterscan onlybe printed
when the standardcharacterset hasbeen selected.
Eachcharacterisdefiiedby anattributebyte(cn>)and 11databytes(dl> ...<A>).
Theattributebyte,en>, indicateswhetherthecharacterisanaseender(notusingthe
lowestof the nineverticaldots)or a descender(not usingthe highestdot). It also
indicatestheamountof whitespaceto theleftof thechamcter(Oto 7 dots),and the
widthof thecharactercell,includingthisspace(4to 15dots).Theleftspaceandcell
widthattributesare usedonlyin proportionalspacing.
Eachdatabyteindicateseightverticaldots,withtheMSBbeingthetop dotandthe
LSB the bottomdot. Thesecorrespondto pins 1 to 8 or 2 to 9 of the print head,
deWndingon whetherthecharacteris an ascenderor descender.
49
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