Epson EX-1000 User Manual page 120

User-Defined Characters
ESC=
Format:
Comments
If C is the total number of characters to be defined,
B = (C x 13) + 2
nl = B MOD 256
n2 = INT(B/256)
n3 = 20 in all cases
n4 = the code of the first character to be defined
n5 = 0 if the top 8 pins are used; n5 = 128 for the bottom 8
n6 = 0 in all cases
n7 through nk are the data numbers that define the characters, with
11 data numbers for each character
The data numbers for each character are determined as shown on
the grid for the Epson mode on page 6-4. To print a user-defined
character, you must use ESC I, which is described on page A-41.
A - 4 4
Define User-defined Characters
Command Summary