cs410/keyb.c

   1 #include <io.h>
   2 #include "keyhelp.h"
   3 #include "../net/net.h"
   4 #include <output.h>
   5
   6 /* Takes over the i8042... oh well.  If we ever fully emulate the i8042,
   7  * then we'll patch into that.
   8  */
   9
  10 #define KEYBOARD_PORT 0x60
  11 #define KEYB_STATUS_PORT 0x64
  12 #define KEYB_OBF 0x1
  13
  14 int getchar()
  15 {
  16         kh_type key;
  17         unsigned char scancode;
  18
  19         /* Ignore accesses -- XXX hack */
  20         outl(0x840, 0x0);
  21         outl(0x848, 0x0);
  22
  23         do
  24         {
  25                 while (!(inb(KEYB_STATUS_PORT) & KEYB_OBF))
  26                         eth_poll();
  27
  28                 scancode = inb(KEYBOARD_PORT);
  29                 outputf("scancode: %02x", scancode);
  30                 key = process_scancode(scancode);
  31         } while (!KH_HASDATA(key) || !KH_ISMAKE(key));
  32
  33         /* XXX */
  34         outl(0x840, 0x0);
  35         outl(0x844, 0x1000);
  36         outl(0x848, 0x1000);
  37
  38         return KH_GETCHAR(key);
  39 }