--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/timer/amigaos/SDL_systimer.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,145 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+#include <stdio.h>
+#include <sys/time.h>
+#include <signal.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include "SDL_error.h"
+#include "SDL_timer.h"
+#include "SDL_timer_c.h"
+
+/* The first ticks value of the application */
+static struct timeval start;
+
+void SDL_StartTicks(void)
+{
+	/* Set first ticks value */
+	gettimeofday(&start, NULL);
+}
+
+Uint32 SDL_GetTicks (void)
+{
+	struct timeval now;
+	Uint32 ticks;
+
+	gettimeofday(&now, NULL);
+	ticks=(now.tv_sec-start.tv_sec)*1000+(now.tv_usec-start.tv_usec)/1000;
+	return(ticks);
+}
+
+void SDL_Delay (Uint32 ms)
+{
+	int was_error;
+#ifndef linux	/* Non-Linux implementations need to calculate time left */
+	Uint32 then, now, elapsed;
+#endif
+	struct timeval tv;
+
+	/* Set the timeout interval - Linux only needs to do this once */
+#ifdef linux
+	tv.tv_sec = ms/1000;
+	tv.tv_usec = (ms%1000)*1000;
+#else
+	then = SDL_GetTicks();
+#endif
+	do {
+		errno = 0;
+#ifndef linux
+		/* Calculate the time interval left (in case of interrupt) */
+		now = SDL_GetTicks();
+		elapsed = (now-then);
+		then = now;
+		if ( elapsed >= ms ) {
+			break;
+		}
+		ms -= elapsed;
+		tv.tv_sec = ms/1000;
+		tv.tv_usec = (ms%1000)*1000;
+#endif
+		was_error = select(0, NULL, NULL, NULL, &tv);
+	} while ( was_error && (errno == EINTR) );
+}
+
+#include "SDL_thread.h"
+
+/* Data to handle a single periodic alarm */
+static int timer_alive = 0;
+static SDL_Thread *timer = NULL;
+
+static int RunTimer(void *unused)
+{
+	while ( timer_alive ) {
+		if ( SDL_timer_running ) {
+			SDL_ThreadedTimerCheck();
+		}
+		SDL_Delay(1);
+	}
+	return(0);
+}
+
+/* This is only called if the event thread is not running */
+int SDL_SYS_TimerInit(void)
+{
+#ifdef NO_AMIGADEBUG
+	fprintf(stderr,"Creo il thread per il timer (NOITMER)...\n");
+#endif
+	timer_alive = 1;
+	timer = SDL_CreateThread(RunTimer, NULL);
+	if ( timer == NULL )
+	{
+#ifdef NO_AMIGADEBUG
+		fprintf(stderr,"Creazione del thread fallita...\n");
+#endif
+
+		return(-1);
+	}
+	return(SDL_SetTimerThreaded(1));
+}
+
+void SDL_SYS_TimerQuit(void)
+{
+	timer_alive = 0;
+	if ( timer ) {
+		SDL_WaitThread(timer, NULL);
+		timer = NULL;
+	}
+}
+
+int SDL_SYS_StartTimer(void)
+{
+	SDL_SetError("Internal logic error: Linux uses threaded timer");
+	return(-1);
+}
+
+void SDL_SYS_StopTimer(void)
+{
+	return;
+}