Exemplo n.º 1
0
/*
 * platform specific functions for tem
 */
int
plat_stdout_is_framebuffer(void)
{
	if (vbe_available() && VBE_VALID_MODE(vbe_get_mode())) {
		return (1);
	}
        return (0);
}
Exemplo n.º 2
0
void do_vesa_int()
{
  int err_code = VBE_ERROR_GENERAL_FAIL;

#if 0
  v_printf(
    "VBE: function 0x%02x, bx = 0x%04x cx = 0x%04x, dx = 0x%04x, es = 0x%04x, di = 0x%04x\n",
    (unsigned) _AL, (unsigned) _BX, (unsigned) _CX, (unsigned) _DX, (unsigned) _ES, (unsigned) _DI
  );
#endif

  switch(_AL) {
    case 0x00:		/* return VBE controller info */
      err_code = vbe_info(SEGOFF2LINEAR(_ES, _DI));
      break;

    case 0x01:		/* return VBE mode info */
      err_code = vbe_mode_info(_CX, SEGOFF2LINEAR(_ES, _DI));
      break;

    case 0x02:		/* set VBE mode */
      err_code = vbe_set_mode(_BX);
      break;

    case 0x03:		/* get current VBE mode */
      err_code = vbe_get_mode();
      break;

    case 0x04:		/* save/restore state */
      err_code = vbe_save_restore(_DL, _CX, SEGOFF2LINEAR(_ES, _BX));
      break;

    case 0x05:		/* display window control (aka set/get bank) */
      err_code = vbe_display_window(_BH, _BL, _DL /* must be _DX !!!*/);
      break;

    case 0x06:		/* set/get logical scan line length */
      err_code = vbe_scan_length(_BL, _CX);
      break;

    case 0x07:		/* set/get display start */
      err_code = vbe_display_start(_BL, _CX, _DX);
      break;

    case 0x08:		/* set/get DAC palette format */
      err_code = vbe_dac_format(_BL, _BH);
      break;

    case 0x09:		/* set/get palette data */
      err_code = vbe_palette_data(_BL, _CX, _DX, SEGOFF2LINEAR(_ES, _DI));
      break;

    case 0x0a:		/* return VBE PM interface */
      err_code = vbe_pm_interface(_BL);
      break;

    case 0x10:		/* set/get display power state */
      err_code = vbe_power_state(_BL, _BH);
      break;

    default:
      err_code = VBE_ERROR_UNSUP;
#ifdef DEBUG_VBE
      v_printf(
        "VBE: unsupported function 0x%02x, retval = %d, bx = 0x%04x cx = 0x%04x, dx = 0x%04x, es = 0x%04x, di = 0x%04x\n",
        (unsigned) _AL, err_code, (unsigned) _BX, (unsigned) _CX, (unsigned) _DX, (unsigned) _ES, (unsigned) _DI
      );
#endif
  }

 if(err_code >= 0) {
   _AL = 0x4f;
   _AH = (unsigned char) err_code;
 }
}