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Z80-KEYBOARD(5) Keyboard mapping Z80-KEYBOARD(5)
NAME
description of keyboard mapping used by IN on port 0.
DESCRIPTION
If there is no readable file keyboard_map then there is a one-to-one
mapping of characters to key codes. The key code 0 means no character
input.
If there is a readable the file keyboard_map , it must contain a map‐
ping of key codes to characters. Each line of this file is either a
comment line or a mapping line. A line starting with two hexadecimal
digits followed by a Space is a mapping line else it is considered as a
comment line and ignored.
The first two hexadecimal digits of a mapping line indicate the key‐
code. This must be unique in the file. Next in column 5 follows a
printable character (Ascii code > 32) and a Space or in column 5 and 6
are two hexadecimal digits or columns 5 and 6 contain both a Space. The
last case indicates that this key code is unused by the keyboard. In
the first two cases the character in column 5 respectively the charac‐
ter identified by the hexadecimal number in column 5 and 6 is mapped to
the key code. If colum 7 exists it must be a Space and further columns
in the line are ignored.
The first two mapping lines must describe unused key codes. The first
key code is used to denote the case no key was pressed on the key board
and the second mapping line denote the case an unknown character is to
map to a key code.
SEE ALSO
z80-ports(5)
Z80-PORTS Version 2.0 12 Feb 2004 Z80-KEYBOARD(5)
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