56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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/*
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* Copyright (C) 1996-1998 Szeredi Miklos 2006 Anton Romanov
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* Email: mszeredi@inf.bme.hu
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version. See the file COPYING.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "zxconfig.h"
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#include "sptiming.h"
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#include "interf.h"
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/* not precise but .... anyway this is used only when not playing
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* sound ... */
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long shouldbe_tick;
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void spti_init(void){
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spti_reset();
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}
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void spti_sleep(unsigned long usecs){
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/* unsigned long now,need;
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now = *rb->current_tick;
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need = now + usecs;
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rb -> sleep ( need - now );*/
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rb->sleep ( usecs );
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}
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void spti_reset(void){
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shouldbe_tick = *rb -> current_tick;
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}
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void spti_wait(void){
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long rem;
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long now;
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now = *rb -> current_tick;
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shouldbe_tick+=SKIPTICKS;
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rem = shouldbe_tick - now;
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if(rem > 0) {
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if(rem > SKIPTICKS) rem = SKIPTICKS;
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spti_sleep((unsigned long) rem);
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}
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if(rem == SKIPTICKS || rem < -10 * SKIPTIME) spti_reset();
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}
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