Operation Manual

Step 3 Entering the total
If the total is less than 256, then n1 is the total and n2 is 0. For our
one character, n1 is 15 and n2 is 0. Enter the numbers into the Load
Character Code,
ESC= n1 n2
If the total is more than 255, then the total is divided by 256 with n1
being the remainder and n2 being the integer part of the result. It
is easier to look at an example.
Say
we have decided to create an entire character set of94 characters.
We
would have:
(94 X 13) + 2 = 1224
n2 = int (1224/256) = 4
n1 = 1224- (n2 x 256) = 200
So the command would look like this:
CHR$(27);" = ";CHR$(200);CHR$(4);
Step 4 The spacer code
Insert DC4(CHR$20) here to separate the individual character data
you are going to load, Here is how the command looks now:
CHR$(27);" = ";CHR$(15);CHR$(0);CHR$(20);
Step 5 The start code
Insert the start code in the command. The start code is the first
character
being replaced by your new character. You can begin
your custom character set at any point in the character table but
remember that if you are loading more than one character, characters
are replaced consecutively from the starting point.
If you are
loading three characters beginning
at the letter A (65 decimal), you
will end up replacing letters A, Band C. Then our start codes would
be like this:
4-2 IBM Modes Advanced Features