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kbd.h
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// PC keyboard interface constants
#define KBSTATP 0x64 // kbd controller status port(I)
#define KBS_DIB 0x01 // kbd data in buffer
#define KBDATAP 0x60 // kbd data port(I)
#define NO 0
#define SHIFT (1 << 0)
#define CTL (1 << 1)
#define ALT (1 << 2)
#define CAPSLOCK (1 << 3)
#define NUMLOCK (1 << 4)
#define SCROLLLOCK (1 << 5)
#define E0ESC (1 << 6)
// Special keycodes
#define KEY_HOME 0xE0
#define KEY_END 0xE1
#define KEY_UP 0xE2
#define KEY_DN 0xE3
#define KEY_LF 0xE4
#define KEY_RT 0xE5
#define KEY_PGUP 0xE6
#define KEY_PGDN 0xE7
#define KEY_INS 0xE8
#define KEY_DEL 0xE9
// C('A') == Control-A
#define C(x) (x - '@')
static uchar shiftcode[256] = {[0x1D] CTL, [0x2A] SHIFT, [0x36] SHIFT, [0x38] ALT, [0x9D] CTL, [0xB8] ALT};
static uchar togglecode[256] = {[0x3A] CAPSLOCK, [0x45] NUMLOCK, [0x46] SCROLLLOCK};
static uchar normalmap[256] = {NO,
0x1B,
'1',
'2',
'3',
'4',
'5',
'6', // 0x00
'7',
'8',
'9',
'0',
'-',
'=',
'\b',
'\t',
'q',
'w',
'e',
'r',
't',
'y',
'u',
'i', // 0x10
'o',
'p',
'[',
']',
'\n',
NO,
'a',
's',
'd',
'f',
'g',
'h',
'j',
'k',
'l',
';', // 0x20
'\'',
'`',
NO,
'\\',
'z',
'x',
'c',
'v',
'b',
'n',
'm',
',',
'.',
'/',
NO,
'*', // 0x30
NO,
' ',
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
'7', // 0x40
'8',
'9',
'-',
'4',
'5',
'6',
'+',
'1',
'2',
'3',
'0',
'.',
NO,
NO,
NO,
NO, // 0x50
[0x9C] '\n', // KP_Enter
[0xB5] '/', // KP_Div
[0xC8] KEY_UP,
[0xD0] KEY_DN,
[0xC9] KEY_PGUP,
[0xD1] KEY_PGDN,
[0xCB] KEY_LF,
[0xCD] KEY_RT,
[0x97] KEY_HOME,
[0xCF] KEY_END,
[0xD2] KEY_INS,
[0xD3] KEY_DEL};
static uchar shiftmap[256] = {NO,
033,
'!',
'@',
'#',
'$',
'%',
'^', // 0x00
'&',
'*',
'(',
')',
'_',
'+',
'\b',
'\t',
'Q',
'W',
'E',
'R',
'T',
'Y',
'U',
'I', // 0x10
'O',
'P',
'{',
'}',
'\n',
NO,
'A',
'S',
'D',
'F',
'G',
'H',
'J',
'K',
'L',
':', // 0x20
'"',
'~',
NO,
'|',
'Z',
'X',
'C',
'V',
'B',
'N',
'M',
'<',
'>',
'?',
NO,
'*', // 0x30
NO,
' ',
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
'7', // 0x40
'8',
'9',
'-',
'4',
'5',
'6',
'+',
'1',
'2',
'3',
'0',
'.',
NO,
NO,
NO,
NO, // 0x50
[0x9C] '\n', // KP_Enter
[0xB5] '/', // KP_Div
[0xC8] KEY_UP,
[0xD0] KEY_DN,
[0xC9] KEY_PGUP,
[0xD1] KEY_PGDN,
[0xCB] KEY_LF,
[0xCD] KEY_RT,
[0x97] KEY_HOME,
[0xCF] KEY_END,
[0xD2] KEY_INS,
[0xD3] KEY_DEL};
static uchar ctlmap[256] = {NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
NO,
C('Q'),
C('W'),
C('E'),
C('R'),
C('T'),
C('Y'),
C('U'),
C('I'),
C('O'),
C('P'),
NO,
NO,
'\r',
NO,
C('A'),
C('S'),
C('D'),
C('F'),
C('G'),
C('H'),
C('J'),
C('K'),
C('L'),
NO,
NO,
NO,
NO,
C('\\'),
C('Z'),
C('X'),
C('C'),
C('V'),
C('B'),
C('N'),
C('M'),
NO,
NO,
C('/'),
NO,
NO,
[0x9C] '\r', // KP_Enter
[0xB5] C('/'), // KP_Div
[0xC8] KEY_UP,
[0xD0] KEY_DN,
[0xC9] KEY_PGUP,
[0xD1] KEY_PGDN,
[0xCB] KEY_LF,
[0xCD] KEY_RT,
[0x97] KEY_HOME,
[0xCF] KEY_END,
[0xD2] KEY_INS,
[0xD3] KEY_DEL};