/* * BRLTTY - A background process providing access to the console screen (when in * text mode) for a blind person using a refreshable braille display. * * Copyright (C) 1995-2021 by The BRLTTY Developers. * * BRLTTY comes with ABSOLUTELY NO WARRANTY. * * This is free software, placed under the terms of the * GNU Lesser General Public License, as published by the Free Software * Foundation; either version 2.1 of the License, or (at your option) any * later version. Please see the file LICENSE-LGPL for details. * * Web Page: http://brltty.app/ * * This software is maintained by Dave Mielke . */ #define VBSIZE 40 #define LPTPORT 0x278 #define VBDELAY 3 #define VBCLOCK 5 #define VBREFRESHDELAY 40 // Min. time to wait before updating the display // Don't touch the following definitions #define VBLPTSTROBE 0x40 #define VBLPTCLOCK 0x20 #define VBLPTDATA 0x80 #define KEY_UP 0x1 #define KEY_LEFT 0x2 #define KEY_RIGHT 0x4 #define KEY_DOWN 0x8 #define KEY_ATTRIBUTES 0x10 #define KEY_CURSOR 0x20 #define KEY_HOME 0x40 #define KEY_MENU 0x80 typedef struct { unsigned char bigbuttons; char routingkey : 7; char keypressed : 1; } vbButtons;