1 files changed, 10 insertions, 0 deletions
diff --git a/z80_decode.c b/z80_decode.c
index 4b6929c..81760ae 100644
--- a/z80_decode.c
+++ b/z80_decode.c
@@ -27,6 +27,7 @@
 
 */
 #include <stdlib.h>
+#include <limits.h>
 
 #include "z80.h"
 #include "z80_private.h"
@@ -71,6 +72,8 @@ void Z80_InitialiseInternals(void)
     Z80Word f;
     Z80Reg r;
 
+    /* Check endianness
+    */
     r.w=0x1234;
 
     if (r.b[0] == 0x12)
@@ -88,6 +91,13 @@ void Z80_InitialiseInternals(void)
     	exit(1);
     }
 
+    /* Check variable sizes
+    */
+    if (CHAR_BIT!=8 || sizeof(Z80Word)!=2)
+    {
+    	exit(2);
+    }
+
     /* Initialise flag tables
     */
     for(f=0;f<256;f++)