1 files changed, 10 insertions, 1 deletions

diff --git a/src/mem.c b/src/mem.c
index ec34750..aba34fc 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -16,13 +16,22 @@ void MemSet(int addr, unsigned char value, int size){
 }
 
 void MemStore(unsigned char *data, int size, int addr){
-  for(int i=0;i<size;i++)
+  for(int i=0;i<size;i++){
+    if(addr+i>4096){
+      printf("Illegal memory access (store): addr=%d\n",addr+i);
+      return;
+    }
     memory[addr+i]=data[i];
+  }
 }
 
 void MemLoad(unsigned char *data, int size, int addr){
   int location=addr;
   for(int i=0;i<size;i++){
+    if(addr+i>4096){
+      printf("Illegal memory access (load): addr=%d\n",addr+i);
+      return;
+    }
     data[i]=memory[addr+i];
   }
 }