Epson 4100 manual SOH a z % Select Character Source and Library, Character Source Library

150Universal Control Commands

•Overwritten by new selections

•A new emulation or character set is selected

•Power is turned off

The format and examples for sending the command follows.

SOH A z %					Select Character Source and Library
ASCII:	SOH	A	z	%	(s)	( l )	(n1)	(n2)
Decimal:	1	65	122	37	(s)	( l )	(n1)	(n2)
Hexadecimal:	01	41	7A	25	(s)	( l )	(n1)	(n2)
Control:	CTRL A	A	z	%	(s)	( l )	(n1)	(n2)

Selects a character source and character library for a range of data bytes. s specifies the source—the type of memory that contains the character library. • specifies the character library residing in the character source. Values for s and • • are as follows:

		Character	Character
s	•	Source	Library
0	0	ROM (permanent memory) Currently selected
character set
1	0	RAM (temporary memory)Download characters
2	0	ROM	OCR-A overlay characters
2	1	ROM	OCR-B overlay characters

n1 and n2 define the range of data bytes for which the selection applies. To map only one data byte, enter the same value for both n1 and n2.

OCR-A and OCR-B characters print only when NLQ printing is selected. (See Appendix D for charts of OCR-A and OCR-B characters.) The characters correspond to the characters in the current data byte map. If you have mapped characters prior to selecting OCR-A and OCR-B, the overlay characters equivalent to the mapped characters are printed. If no equivalent to a mapped character exists within the OCR-A or OCR-B