libretro: set cycle_multiplier

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 4e509a0..3431685 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -437,6 +437,15 @@ void retro_init(void)
        level = 1;
        environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
 
+       /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times)
+        * we have to do this because cache misses and some IO penalties
+        * are not emulated. Warning: changing this may break compatibility. */
+#ifdef __ARM_ARCH_7A__
+       cycle_multiplier = 175;
+#else
+       cycle_multiplier = 200;
+#endif
+
        McdDisable[0] = 0;
        McdDisable[1] = 1;
        init_memcard(Mcd1Data);