/* * 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) 1995-2019 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 . */ unsigned char readPort1 (unsigned short int port) { unsigned char v; __asm__ __volatile__ ("inb %w1,%0" : "=a" (v) : "Nd" (port)); return v; } void writePort1 (unsigned short int port, unsigned char value) { __asm__ __volatile__ ("outb %b0,%w1" : : "a" (value), "Nd" (port)); }