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Define download characters
Mode
ASCII
Decimal
Hexadecimal
<ESC> "="
)?/
,,~
"#"
27
61 /t/
n2
35
IB 3D )?/ /12 23
IBM
/1.?
/1'/
<()>
17S
f?.] M
o
/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 new characters and stores them in RAM for later use. EDS
switch A-3 must be set OFF; otherwise RAM is used as an input
buffer, not downloading characters, and this command is ignored.
Downloading characters in IBM mode requires Dot Pattern data and
Character Index Table data.
Dot Pattern data controls which pins fire when printing a character.
Index Table data is placed in a "lookup table" that provides infor-
mation on where Dot Pattern data is stored in memory and defines
certain attributes of the character.
(nl + n2 x 256) give the number of bytes to be downloaded.
}13 and
t74
indicate the low order and high order addresses in which
data is to be stored.
n3 should be 15 and n4 should be 128 for this printer.
n5 determines the character mode to be downloaded, as shown
below:
)75
Character mode
Character width
o
Draft
10
1
LQ pica
36
~
LQ proportional
18-42
3
LQ elite
30
mf
through
n79
indicate Index Table data.
n7f
and m2 indicate the addresswhere Dot Pattern is stored.
ml
is the
high-order byte.
n?3
indicates the number of columns in the character
memory, and
m4
indicates the number of columns in the character
less 1.
114
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