kbd.h

// 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
        };