diff --git a/desmume/src/mc.c b/desmume/src/mc.c
index 0f8c9fa1c..acdaa19d3 100644
--- a/desmume/src/mc.c
+++ b/desmume/src/mc.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include "MMU.h"
 #include "debug.h"
 #include "types.h"
 #include "mc.h"
@@ -83,6 +84,13 @@ void mc_reset_com(memory_chip_t *mc)
         mc->com = 0;
 }
 
+void mc_realloc(int type, u32 size)
+{
+        if(MMU.bupmem.data) free(MMU.bupmem.data);
+        mc_init(&MMU.bupmem, type);
+        mc_alloc(&MMU.bupmem, size);     
+}
+
 void mc_read_file(memory_chip_t *mc, char* filename)
 {
      FILE* file = fopen(filename, "rb");
diff --git a/desmume/src/mc.h b/desmume/src/mc.h
index be06099e6..01d9f175c 100644
--- a/desmume/src/mc.h
+++ b/desmume/src/mc.h
@@ -44,6 +44,7 @@ typedef struct
 
 void mc_init(memory_chip_t *mc, int type);    /* reset and init values for memory struct */
 u8 *mc_alloc(memory_chip_t *mc, u32 size);  /* alloc mc memory */
+void mc_realloc(int type, u32 size);      /* realloc mc memory */
 void mc_free(memory_chip_t *mc);    /* delete mc memory */
 void mc_reset_com(memory_chip_t *mc);       /* reset communication with mc */
 u8 fw_transfer(memory_chip_t *mc, u8 data); /* transfer to, then receive data from firmware */