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such as emphasized and double-width, one code turns the mode on
and another turns it off. For graphics, the commands are more
complicated because a code that turns on a graphics mode also specifies
how many columns it will use. After the LQ-2500 receives this
code,
it
interprets the next numbers as pin patterns and prints them on the
paper.
The LQ has one command that allows you to use any of the 11
graphics options. The format of the command is:
ESCape
=*” m
nl n2
data
In this command, m selects the graphics option and
nl
and
n2
specify the number of columns to reserve for graphics. The available
graphics options are listed in Table 6-1.
Table 61. Graphics Options
Option
Single-dens&
Ho&. density
Pins m
(dots/in.)
8
0
60
Double-density
0
1
I
120
Hiah-meed double-density’
8 2 120
Quadruple-density’
8 3
240
CRT I
8 4
80
CRT II
8
6
90
Single-density
24
32
60
Double-density
24
33
120
CRT III
24
38
90
Triple-density
24
39 180
Hex-density*
24
40
360
‘Adjacent dots cannot be pinted In this mode
Column reservation numbers
The graphics command requires more than one number to specify
how many columns to reserve because one line can use thousands of
columns, but the LQ
does
not use numbers larger than 255 (decimal).
Graphics and User-defined Characters
6-5