Define download characters
Mode ASCII Decimal Hexadecimal
<ESC> “=” )?/ ,,~ “#” 27 61 /t/ n2 35 IB 3D )?/ /12 23
IBM /1.? /1’/ <()> 17S f?.] Mo/L5 /?.7}?4 00 ns
ml ~t~ ,,, m9 n?/ rd .,, ?n9 ml rd m9
(11 d2 d.1’ (/1 (I2 d.1” [11 d2 d.1”
Defines newcharacters and stores them in RAM for later use. EDS
switch A-3 must be set OFF; otherwise RAM is used as an input
buffer, notdownloading characters, and this command is ignored.
Downloadingcharacters in IBMmode requires Dot Pattern data and
Character Index Table data.
DotPattern data controls which pins fire when printing acharacter.
Index Table data isplaced in a“lookup table” that provides infor-
mation on where Dot Pattern data isstored in memory and defines
certain attributesof the character.
(nl +n2 x256)give the number of bytes to be downloaded.
}13and t74indicate the low order and high order addresses in which
data isto be stored.
n3 shouldbe 15 and n4 should be 128for this printer.
n5 determines the character mode to be downloaded, as shown
below:
)75 Character mode Character width
oDraft 10
1LQ pica 36
~LQ proportional 18-42
3LQ elite 30
mf through n79indicate Index Table data.
n7f andm2 indicatethe addresswhere DotPattern is stored.ml isthe
high-orderbyte. n?3indicatesthenumber ofcolumns inthe character
memory, and m4 indicatesthe number of columns in the character
less 1.
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