IBM TM7 - Manual (Page 140)

Impact Code Page
You define the character matrix for each code page with MCT #4 for impact code
page 1 and MCT #5 for impact code page 2. See Table 15 on page 123.
If the matrix defines the characters as 9 dots high or less, a print line will be printed
in one pass of the printhead. When the matrix is defined as greater than 9 dots
high, it takes two passes of the printhead per print line.
Landscape printing is limited to characters with a height of 9 dots or less. If
user-defined characters are to be used in landscape print mode, they must be less
than 10 dots high.
The number of data bytes per character loaded is 2 × character width. The total
number of data bytes for this command is 2 × character width × (1+m−n). Each
slice is defined with two bytes; the most significant bit (MSB) of each slice is the
bottom of the character.
When defining wire patterns, the same wire does not fire in consecutive, primary (P)
and secondary (S) positions. (The printer does not check for errors in defining the
character.) If the character is defined with dots in consecutive positions only one of
the dots is fired.)
0000111100000000
0001111110000000
0011111111000000
0111000011100000
0110000001100000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1111111111110000
1111111111110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
1100000000110000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0F00
1F80
3FC0
70E0
6060
C030
C030
C030
C030
C030
C030
C030
FFF0
FFF0
C030
C030
C030
C030
C030
C030
C030
C030
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
row #
Figure 42. Proportional Font Example
updated March 18, 2002
116 SureMark DBCS User’s Guide