--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/timer/nds/SDL_systimer.c	Wed Aug 27 15:10:03 2008 +0000
@@ -0,0 +1,120 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#ifdef SDL_TIMER_NDS
+
+#include <nds.h>
+#include <nds/timers.h>
+
+#include "SDL_timer.h"
+#include "../SDL_timer_c.h"
+#include "../SDL_systimer.h"
+
+/* Data to handle a single periodic alarm */
+static int timer_alive = 0;
+static Uint32 timer_ticks;
+
+void
+SDL_StartTicks(void)
+{
+    if (!timer_alive) {
+        SDL_SYS_TimerInit();
+        SDL_SYS_StartTimer();
+    }
+
+    timer_ticks = 0;
+}
+
+Uint32
+SDL_GetTicks(void)
+{
+    return timer_ticks;
+}
+
+void
+SDL_Delay(Uint32 ms)
+{
+    Uint32 start = SDL_GetTicks();
+    while (timer_alive) {
+        if ((SDL_GetTicks() - start) >= ms)
+            break;
+    }
+}
+
+static int
+RunTimer(void *unused)
+{
+    while (timer_alive) {
+        if (SDL_timer_running) {
+        }
+        SDL_Delay(1);
+    }
+    return (0);
+}
+
+void
+NDS_TimerInterrupt(void)
+{
+    timer_ticks++;
+}
+
+/* This is only called if the event thread is not running */
+int
+SDL_SYS_TimerInit(void)
+{
+    timer_alive = 1;
+    timer_ticks = 0;
+    TIMER_CR(3) = TIMER_DIV_1024 | TIMER_IRQ_REQ;
+    TIMER_DATA(3) = TIMER_FREQ_1024(1000);
+    irqSet(IRQ_TIMER3, NDS_TimerInterrupt);
+    irqEnable(IRQ_TIMER3);
+    return 0;
+}
+
+void
+SDL_SYS_TimerQuit(void)
+{
+    if (timer_alive) {
+        TIMER_CR(3) = 0;
+    }
+    timer_alive = 0;
+    irqDisable(IRQ_TIMER3);
+}
+
+int
+SDL_SYS_StartTimer(void)
+{
+    TIMER_CR(3) |= TIMER_ENABLE;
+    return 0;
+}
+
+void
+SDL_SYS_StopTimer(void)
+{
+    TIMER_CR(3) &= ~TIMER_ENABLE;
+    return;
+}
+
+
+#endif /* SDL_TIMER_NDS */
+/* vi: set ts=4 sw=4 expandtab: */