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void keyboard_handler()
{
ioport_out(PIC1_COMMAND_PORT, 0x20);
uint8_t status = ioport_in(KEYBOARD_STATUS_PORT);
if (status & 0x1)
{
uint8_t keycode = ioport_in(KEYBOARD_DATA_PORT);
if(keycode<0x80)
{
ispressed[keycode]=1;
if(keycode==0x0E) backspace();
else if(keycode==0x1C) enter();
else if(keycode==0x39) space();
else if(keycode==72) keyup();
else if(keycode==80) keydown();
else if(keycode==75) keyleft();
else if(keycode==77) keyright();
else
{
char c=charcode[keycode];
if(c!=' ')
{
if(lctrl)
{
if(c=='l')
{
clear();
prompt();
printf("%s",buffer[buffer_current]);
return;
}
}
if(lshift||rshift)
{
c=shift_charcode[keycode];
}
buffer[buffer_current][buffer_index++]=c;
printf("%c",c);
}
}
}
else
{
ispressed[keycode-0x80]=0;
}
}
}
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