--- a/src/m/tad68k.h	Mon Aug 13 11:19:22 2007 +0200
+++ b/src/m/tad68k.h	Mon Aug 13 11:20:41 2007 +0200
@@ -24,6 +24,22 @@
    operating system this machine is likely to run.
    USUAL-OPSYS="usg5-3"  */
 
+/* Define WORD_MACHINE if addresses and such have
+ * to be corrected before they can be used as byte counts.  */
+
+/* #define WORD_MACHINE */
+
+/* Now define a symbol for the cpu type, if your compiler
+   does not define it automatically */
+
+/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
+   the bit field into an int.  In other words, if bit fields
+   are always unsigned.
+
+   If you use NO_UNION_TYPE, this flag does not matter.  */
+
+/* #define EXPLICIT_SIGN_EXTEND */
+
 /* Data type of load average, as read out of kmem.  */
 /* #define LOAD_AVE_TYPE long */