diff --git a/src/sim65/memory.c b/src/sim65/memory.c
index 11f0be55a..68e7bb93b 100644
--- a/src/sim65/memory.c
+++ b/src/sim65/memory.c
@@ -46,7 +46,7 @@
 
 
 /* THE memory */
-static unsigned char Mem[0x10000];
+unsigned char Mem[0x10000];
 
 
 
@@ -73,14 +73,6 @@ void MemWriteWord (unsigned Addr, unsigned Val)
 
 
 
-unsigned char MemReadByte (unsigned Addr)
-/* Read a byte from a memory location */
-{
-    return Mem[Addr];
-}
-
-
-
 unsigned MemReadWord (unsigned Addr)
 /* Read a word from a memory location */
 {
diff --git a/src/sim65/memory.h b/src/sim65/memory.h
index 41cc800d3..cef786aaa 100644
--- a/src/sim65/memory.h
+++ b/src/sim65/memory.h
@@ -36,7 +36,9 @@
 #ifndef MEMORY_H
 #define MEMORY_H
 
+#include "inline.h"
 
+extern unsigned char Mem[0x10000];
 
 /*****************************************************************************/
 /*                                   Code                                    */
@@ -50,8 +52,15 @@ void MemWriteByte (unsigned Addr, unsigned char Val);
 void MemWriteWord (unsigned Addr, unsigned Val);
 /* Write a word to a memory location */
 
-unsigned char MemReadByte (unsigned Addr);
+#if defined(HAVE_INLINE)
+INLINE unsigned char MemReadByte (unsigned Addr)
 /* Read a byte from a memory location */
+{
+    return Mem[Addr];
+}
+#else
+#define MemReadByte(Addr) Mem[Addr]
+#endif
 
 unsigned MemReadWord (unsigned Addr);
 /* Read a word from a memory location */