From a8968330aff45e0b8cf278f49fa337d5fcb9bfd8 Mon Sep 17 00:00:00 2001 From: Alex AUVOLAT Date: Fri, 28 Mar 2014 17:09:15 +0100 Subject: Import and compile code for article 6.5 --- sos-code-article6.5/hwcore/i8254.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 sos-code-article6.5/hwcore/i8254.h (limited to 'sos-code-article6.5/hwcore/i8254.h') diff --git a/sos-code-article6.5/hwcore/i8254.h b/sos-code-article6.5/hwcore/i8254.h new file mode 100644 index 0000000..406b713 --- /dev/null +++ b/sos-code-article6.5/hwcore/i8254.h @@ -0,0 +1,35 @@ +/* Copyright (C) 2004 David Decotigny + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + USA. +*/ +#ifndef _SOS_i8259_H_ +#define _SOS_i8259_H_ + +#include + +/** + * @file i8254.h PC programmable timer + * + * Programmable timer routines. See the Intel 82C54 datasheet (on kos + * website). + * + * @see i82C54 datasheet on Kos website. + */ + +/** Change timer interrupt (IRQ 0) frequency */ +sos_ret_t sos_i8254_set_frequency(unsigned int freq); + +#endif /* _SOS_i8259_H_ */ -- cgit v1.2.3