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B-2 Modifying Standard Fonts
Defining New Characters
You must define each new character separately, performing the following
procedure for each one.
1. Define the character in a matrix. The matrix size depends on the font you
select (see “Standard Fonts”). Think of the matrix as a bitmap showing
the character’s design. Following is an example.
Left Byte Right Byte
7 654 3 2 1076543210
NOTE: Leave at least one column blank to the character’s right so character
strings do not run together.
2. Translate each line into two bit sequences (left byte/right byte), where an
empty square is 0, and a filled-in square is a 1. For example, the second
line from the top is 00000000 01000000.
3. Convert each bit sequence into two hex characters. For example, the
second line from the top is 00 40.