add memory hooks for cheat/rumble

libretro.c

@@ -18,7 +18,9 @@ static unsigned image_buffer_height;
 static uint16_t XPal[80];
 static uint16_t BPal[256];
 static uint16_t XPal0;
-
+
+extern byte *RAMData;
+extern int RAMPages ;
 
 #define SND_RATE 48000
 
@@ -734,12 +736,17 @@ unsigned retro_get_region(void)
 }
 
 void *retro_get_memory_data(unsigned id)
-{
+{
+   if ( id == RETRO_MEMORY_SYSTEM_RAM )
+      return RAMData;
+
    return NULL;
 }
 
 size_t retro_get_memory_size(unsigned id)
-{
+{
+   if ( id == RETRO_MEMORY_SYSTEM_RAM )
+      return RAMPages*0x4000;
    return 0;
 }