Epson 4500 - Manual (Page 287)

Commands Arranged by Topic
User-defined Characters
See Chapter 4 for sample programs and full information on this topic.
ESC & Define User-defined Characters
Format:
ASCII code:
Decimal:
Hexadecimal:
Comments:
ESC & 0 n1 n2 d1 d 2 d a t a
27 38 0 n1 n2 d1 d 2 d a t a
1B 26 00 n1 n2 d1 d 2 d a t a
This command allows characters to be redefined in the currently
selected mode.
When defining characters, DIP switch 2-5 must be set to off.
ESC : Copy ROM to RAM
Format :
ASCII code: ESC : 0 n 0
Decimal: 27 58 0 n 0
Hexadecimal: 1B 3A 00 n 00
Comments:
This sequence copies the characters in ROM to RAM so that specific
characters can be redefined. The variable n represents the font family.
Fonts in font cartridges (except Orator and Orator-S) can also be
copied. The printer cannot select fonts 2 to 6 unless you have
installed the appropriate font module.
0: Roman 4: Script
1: Sans Serif 5: OCR-B
2: Courier 6: OCR-A
3: Prestige
9-36 Command Summary