resources/x86_keybscr.cpp

   1 #include "x86_keybscr.h"
   2
   3 #include "arch/low/general.h"
   4 #include "arch/low/lowlevel.h"
   5 #include "resources/isa.h"
   6 #include "manes/manec.h"
   7 #include "services/interrupt_manager.h"
   8 #include "manes/error.h"
   9
  10
  11 using namespace resources;
  12
  13 bool x86_keybscr::init_device(p<did> iadr) {
  14         shift = false;
  15
  16         /* Set IRQ1 */
  17         manes::manec::get()->get<services::interrupt_manager>("/interrupt_manager")->register_interrupt(0x21, delegate<void>::method(this, &x86_keybscr::keyboard_received));
  18
  19         return true;
  20 }
  21
  22 /* Scroll screen */
  23 void x86_keybscr::scr_scroll() {
  24         u8 *text_mem = (u8*)0xB8000;
  25
  26         for (int i = 0; i < get_width() * get_height() * 2; i++)
  27                 text_mem[i] = text_mem[i + get_width() * 2];
  28
  29         int pos = get_width() * (get_height() - 1);
  30         arch::outb(0x3D4, 14);
  31         arch::outb(0x3D5, pos >> 8);
  32         arch::outb(0x3D4, 15);
  33         arch::outb(0x3D5, pos);
  34 }
  35
  36 /* Show a sign of selected colour in certain place */
  37 void x86_keybscr::screen_print(char sign, int color, int x, int y) {
  38         u8 *text_mem = (u8*)0xB8000;
  39         int pos = x + y * get_width();
  40
  41         last_x = last_y = 0;
  42         assert("console: wrong coordinates", x > 79 || x < 0 || y > 24 || y < 0);
  43
  44         /* Put char into graphic card memory */
  45         text_mem[pos * 2] = sign;
  46         text_mem[pos * 2 + 1] = color;
  47
  48         /* Move a cursor */
  49         pos++;
  50         arch::outb(0x3D4, 14);
  51         arch::outb(0x3D5, pos >> 8);
  52         arch::outb(0x3D4, 15);
  53         arch::outb(0x3D5, pos);
  54
  55         last_x = x;
  56         last_y = y;
  57 }
  58
  59 /* Scancode to ASCII translators */
  60
  61 const char x86_keybscr::scan_to_ascii[] = {
  62         ' ',' ',
  63         '1','2','3','4','5','6','7',
  64         '8','9','0','-','=','\b',' ',
  65         'q','w','e','r','t','y','u',
  66         'i','o','p','[',']','\n',' ',
  67         'a','s','d','f','g','h','j',
  68         'k','l',';','\'','\\',' ','\\',
  69         'z','x','c','v','b','n','m',
  70         ',','.','/',' ',' ',' ',' ',' '
  71 };
  72
  73 const char x86_keybscr::scan_to_bigascii[] = {
  74         ' ',' ',
  75         '!','@','#','$','%','^','&',
  76         '*','(',')','_','+','\b',' ',
  77         'Q','W','E','R','T','Y','U',
  78         'I','O','P','{','}','\n',' ',
  79         'A','S','D','F','G','H','J',
  80         'K','L',':','\"','|',' ','|',
  81         'Z','X','C','V','B','N','M',
  82         '<','>','?',' ',' ',' ',' ',' '
  83 };
  84
  85 void x86_keybscr::keyboard_received() {
  86         arch::unlock_irqs(1);
  87
  88         u8 scan_code = arch::inb(0x60);
  89
  90         if (scan_code == 0x36 || scan_code == 0x2a)
  91                 shift = true;
  92
  93         else if (scan_code == 0xb6 || scan_code == 0xaa)
  94                 shift = false;
  95         else {
  96                 if (scan_code > 0x35 && scan_code != 0x39) return;
  97
  98                 if (shift)
  99                         received(scan_to_bigascii[scan_code]);
 100                 else
 101                         received(scan_to_ascii[scan_code]);
 102         }
 103 }