Compuprint 9058 Programmer Manual - Manual (Page 51)

EPSON/IBM Mode
A78408098-003 49
n n
1 Gothic 2 Courier
3 Prestige 4 Script
5 OCR-B 6 OCR-A
7 Presentor 11 Boldace
182 DLL
Before copying ROM characters to RAM, cancel italics with the ESC 5
command. After copying you can italicize characters by sending the
ESC 4 command.
ESC =
Defines downloaded characters. (IBM)
ASCII Code ESC = n m id p t
Hexadecimal Value 1B 3D n m id p t
Decimal Value 27 61 n m id p t
This sequence allows you to design and then down-line load special
characters not present in the character set in. Whenever you would
like to start the DLL setting procedure, proceed as follows:
• Copy the character generator in ROM into RAM
• Select the DLL generator
There are 256 entries of 9 bytes that compose the look up table of a
character generator. One entry describes one character as follows:
Byte 1, 2 The absolute address of the character definition.
Byte 3 :
- Bit 7 1: indicates that the character is a graphic character
(connects at 6 lpi)
0: indicates that the character is an alphanumerical
character
- Bit 6 0: indicates a DLL character
1: indicates a resident character