IBM 31x, W2H, 32x User character definition 03 EXT, Input/output device commands, Purpose, Example

Input/output device commands 11-9-2005

Purpose:

Selects the specified character set.

00Modified IBM code page 437 (U.S./European, power-on default)

01Modified IBM code page 897 (Katakana)

02Modified IBM code page 858 (Multilingual International)

03Modified IBM code page 852 (Central Europe)

04Modified IBM code page 855 (Cyrillic)

05Modified IBM code page 857 (Turkey)

06Modified IBM code page 862 (Israel)

07Modified IBM code page 863 (Canadian French)

08Modified IBM code page 864 (Arabic)

09Modified IBM code page 865 (Nordic)

0A Modified IBM code page 808 (Cyrillic - Russia)

0B Modified IBM code page 869 (Greece)

Example:

This example selects the U.S./European character set:

02 00

User character definition (03) <EXT>

	03	nn
Purpose:
		Defines a custom character.
		Logic Controls Emulation Mode
		The byte that follows the command byte contains an ASCII
		character between X'20' and X'7F' of a keyboard key to be
		redefined. This byte is followed by five bytes defining the bit
		patterns of the user-defined character. Logic Controls Emulation
		Mode allows only one keyboard key to be redefined. This means
		that there is only one user-definable character in this mode. Once a
		key is redefined, any occurrence of that character on the display
		will change to the user-defined character. If a new key is redefined,
		the previously redefined key is restored to the original character in
		all places on the display and the newly redefined key is changed to
		the user-definable character. Table A-1 on page A-3shows the
		format of these five bytes.
		Note: A hyphen character in the table indicates a do-not-care bit.
		The other values relate to the character pixel positions
		shown in the diagram following the table. A value of 1 in the
		data stream indicates that the related pixel position is ON; a
		0 indicates that it is OFF.

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