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001 /* Copyright (C) 2004 David Decotigny 002 Copyright (C) 1999 Free Software Foundation, Inc. 003 004 This program is free software; you can redistribute it and/or 005 modify it under the terms of the GNU General Public License 006 as published by the Free Software Foundation; either version 2 007 of the License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU General Public License for more details. 013 014 You should have received a copy of the GNU General Public License 015 along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 USA. 018 */ 019 #ifndef _SOS_i8259_H_ 020 #define _SOS_i8259_H_ 021 022 #include <sos/errno.h> 023 024 /** 025 * @file i8254.h PC programmable timer 026 * 027 * Programmable timer routines. See the Intel 82C54 datasheet (on kos 028 * website). 029 * 030 * @see i82C54 datasheet on Kos website. 031 */ 032 033 /** Change timer interrupt (IRQ 0) frequency */ 034 sos_ret_t sos_i8254_set_frequency(unsigned int freq); 035 036 #endif /* _SOS_i8259_H_ */
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