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Definedownloadcharacters
Mode ASCII
Decimal
Hexadecimal
cESC> “=” nl n2 ‘W’
27 61 nl W? 35
IB 3D d d 23
IBM
d n4 d> n5
dn4
0?s
n3n4 wtL5
ml ni?
m9
ml m2 ... m9
ml m2 ... m9
dl d2 ““”... dx
dl &? ... dx
dl d2 ... (ix
DefinesnewcharactemandstorestheminRAMforlateruse.EDS
switchA-2 mustbe set to “RAM DOWNLOAD”;otherwiseRAM is
usedasaninputbuffer,notdownloadingcharactem,andthiscom-
mandis ignored.
DownloadingcharactersinIBMmoderequiresDotPatterndataand
CharacterIndexTabledata.
DotPatterndatacontrolswhichpinsfirewhenprintingacharacter.
IndexTabledataisplacedin a “lookuptable”thatprovidesinfor-
mationon whereDotPatterndatais storedinmemoryanddefines
certainattributesof thecharacter.
(nl + n2 x 256)givethenumberof bytesto be downloaded.
n3 and
n4 indicatetheloworderandhighorderaddressesinwhich
datais to be stored.
n3 shouldbe 15and
n4 shouldbe 128forthisprinter.
ti determinesthe charactermodeto be downloaded,as shown
below:
ns Charactermode
Characterwidth
o Draft
10
1
LQ pica 36
2 LQproportional
18-42
3
LQelite 30
ml through
m9 indicateIndexTabledata.
ml andm2indicatetheaddresswhereDotPatternisstored.ml is the
high-oderbyte.m.?indicatesthenurnberofcolumnsinthecharacter
memory,and
m4 indicatesthenumberof columnsin thecharacter
less 1.
108