| 1 | .TH KEYMAP 5
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| 2 | .SH NAME
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| 3 | keymap \- keyboard maps
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| 4 | .SH SYNOPSIS
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| 5 | .B /etc/keymap
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| 6 | .SH DESCRIPTION
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| 7 | .B /etc/keymap
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| 8 | is the compressed mapping from keyboard scan codes to ASCII.
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| 9 | It is made from a keymap source file consisting of MAP_COLS columns
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| 10 | (MINIX assigns the value 6 to MAX_COLS, corresponding to key pressed,
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| 11 | key+SHIFT, key+LEFT_ALT, key+RIGHT_ALT, key+ALT+SHIFT and key+CTRL) and
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| 12 | NR_SCAN_CODES rows (MINIX assigns the value 0x80 to NR_SCAN_CODES,
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| 13 | corresponding to the number of scan codes to be provided by the keyboard),
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| 14 | and each element is 2 bytes in length (see u16_t in type definitions).
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| 15 | The low order byte corresponds to the character represented by the scan
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| 16 | code, and the high order byte corresponds to the special meaning (when
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| 17 | CAPS LOCK has effect, if it is a function key, etc.), which is converted to
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| 18 | binary keymap format using the
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| 19 | .BR genmap
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| 20 | utility.
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| 21 | .PP
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| 22 | .SS "Types (general): <sys/types.h>"
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| 23 | <sys/types.h> defines the
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| 24 | .B u8_t
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| 25 | and
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| 26 | .B u16_t
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| 27 | types, corresponding to 8 and 16 bit values.
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| 28 | .SS "Macros: <minix/keymap.h>"
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| 29 | .TP
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| 30 | .BI "C(" c ") - Control"
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| 31 | Maps to control code
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| 32 | .TP
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| 33 | .BI "A(" c ") - Alt"
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| 34 | Sets the eight bit
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| 35 | .TP
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| 36 | .BI "CA(" c ") - Control-Alt"
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| 37 | Short for
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| 38 | .BI "A(C(" c "))"
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| 39 | .TP
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| 40 | .BI "L(" c ") - Caps Lock"
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| 41 | Adds Caps Lock effect
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| 42 | .PP
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| 43 | These macros are used in a keymap source file to help define keys. So
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| 44 | instead of writing
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| 45 | .B 032
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| 46 | to put a CTRL-Z in the map you write
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| 47 | .BR "C('Z')" .
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| 48 | The
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| 49 | .BI "L(" c ")"
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| 50 | macro is used in column 0 to tell that the Caps Lock key is active for this
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| 51 | key. (Caps Lock should only have effect on letters.)
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| 52 | .SS "Definitions: <minix/keymap.h>"
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| 53 | <minix/keymap.h> contains a large number of definitions for special keys,
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| 54 | like function keys, and keys on the numeric keypad. They are:
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| 55 | .PP
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| 56 | Escape key and modifiers:
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| 57 | .BR EXT ,
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| 58 | .BR CTRL ,
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| 59 | .BR SHIFT ,
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| 60 | .BR ALT .
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| 61 | .PP
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| 62 | Numeric keypad keys:
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| 63 | .BR HOME ,
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| 64 | .BR END ,
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| 65 | .BR UP ,
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| 66 | .BR DOWN ,
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| 67 | .BR LEFT ,
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| 68 | .BR RIGHT ,
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| 69 | .BR PGUP ,
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| 70 | .BR PGDN ,
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| 71 | .BR MID " (numeric '5'),"
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| 72 | .BR PLUS ,
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| 73 | .BR INSRT .
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| 74 | .PP
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| 75 | ALT + numpad key:
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| 76 | .BR AHOME ,
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| 77 | .BR AEND ", ...,"
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| 78 | .BR AINSRT .
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| 79 | .PP
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| 80 | CTRL + numpad:
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| 81 | .BR CHOME ,
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| 82 | .BR CEND ", ...,"
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| 83 | .BR CINSRT .
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| 84 | .PP
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| 85 | Lock keys:
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| 86 | .BR CALOCK " (Caps Lock),"
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| 87 | .BR NLOCK " (Num Lock),"
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| 88 | .BR SLOCK " (Scroll Lock)."
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| 89 | .PP
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| 90 | Function keys:
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| 91 | .BR F1 ", ...,"
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| 92 | .BR F12 .
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| 93 | .PP
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| 94 | ALT - function key:
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| 95 | .BR AF1 ", ...,"
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| 96 | .BR AF12 .
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| 97 | .PP
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| 98 | CTRL - function key:
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| 99 | .BR CF1 ", ...,"
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| 100 | .BR CF12 .
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| 101 | .PP
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| 102 | SHIFT - function key:
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| 103 | .BR SF1 ", ...,"
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| 104 | .BR SF12 .
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| 105 | .PP
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| 106 | ALT - SHIFT - function key:
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| 107 | .BR ASF1 ", ...,"
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| 108 | .BR ASF12 .
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| 109 | .PP
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| 110 | There is one key definition that isn't a key at all:
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| 111 | .BR EXTKEY .
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| 112 | This keycode is sent by the keyboard as an indicator that the next keycode
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| 113 | is special. For instance both ALT keys have the same keycode, but the right
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| 114 | ALT key is sent by the keyboard preceded by the EXTKEY keycode. The same is
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| 115 | true for the '/' key on the numeric pad versus the other '/' key on the US
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| 116 | keyboard. (On other keyboards this key may have a different symbol.) The
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| 117 | keyboard driver knows that a different key is presses if it is preceded by
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| 118 | EXTKEY.
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| 119 | .SS "Creating/changing keyboard mapping"
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| 120 | You can create your own keyboard mapping by copying one of the existing
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| 121 | keymap source files (Standard Minix:
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| 122 | .BR kernel/keymaps/*.src ,
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| 123 | Minix-vmd:
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| 124 | .BR kernel/ibm/keymaps/*.src )
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| 125 | and modifying the desired keys. Once this has been done, you need to
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| 126 | recompile the genmap.c file, either by adding a new entry to the Makefile,
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| 127 | or by running the following commands:
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| 128 | .PP
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| 129 | .RS
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| 130 | .ft B
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| 131 | cc -DKEYSRC=\e"\fIkeymap\fP.src\e" genmap.c
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| 132 | .ft P
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| 133 | .RE
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| 134 | .PP
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| 135 | After this, the
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| 136 | .BR keymap
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| 137 | file can be generated by running:
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| 138 | .PP
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| 139 | .RS
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| 140 | .BI "a.out > " keymap .map
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| 141 | .RE
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| 142 | .PP
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| 143 | The keymap can be loaded in the keyboard driver by:
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| 144 | .PP
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| 145 | .RS
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| 146 | .BI "loadkeys " keymap .map
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| 147 | .RE
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| 148 | .PP
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| 149 | It is wise to first run
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| 150 | .B loadkeys
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| 151 | on one of the maps in
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| 152 | .B /usr/lib/keymaps
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| 153 | so that you can easily revert back to a known keymap with a few taps on the
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| 154 | up-arrow key and pressing return. You will otherwise have to fix the keymap
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| 155 | with a faulty keymap loaded into the keyboard driver, which is no fun.
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| 156 | .PP
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| 157 | When the keymap is to your satisfaction you can copy it to
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| 158 | .B /etc/keymap
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| 159 | to have it loaded automatically at reboot.
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| 160 | .SH FILES
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| 161 | .TP 15
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| 162 | .B /etc/keymap
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| 163 | Default keymap file
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| 164 | .SH "SEE ALSO"
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| 165 | .B loadkeys (1).
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| 166 | .SH AUTHOR
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| 167 | Victor A. Rodriguez - El bit Fantasma (Bit-Man@Tasa.Com.AR)
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