IBM 31x, Installation And Service Manual, Page: 33 / 68

Appendix A. Input/output device commands
This section lists the commands and their usage.
Character display (VFD) commands
The integrated customer display and distributed customer display use the same
command sets.
This section describes the following character display commands:
v
Emulation mode select
v
Character set select
v
User character definition
v
Brightness control
v Alphanumeric message scroll
v
Backspace
v Horizontal tab
v
Line feed
v Carriage return
v
Test
v Display position
v
Normal display
v
Vertical scroll
v
Cursor on
v
Cursor off
v Reset
v
Null
Note: The command code format shown in the following topics consists of the hex
value followed by the ASCII representation of that value within brackets.
Emulation mode select (00) <NULL>
00 nn
Purpose:
Sets the specified emulation mode.
00 Logic Controls Emulation Mode (default)
01 IBM mode
Example:
This example sets Logic Controls emulation mode:
00 00
Character set select (02) <STX>
Note: This command is effective only in IBM Mode.
02 nn
11-9-2005
© Copyright IBM Corp. 2002, 2004
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