--- a/src/m/irist.h	Mon Aug 13 11:13:33 2007 +0200
+++ b/src/m/irist.h	Mon Aug 13 11:14:34 2007 +0200
@@ -58,11 +58,6 @@
   (copy-file), it would say that it is non-critical...
 #endif /* 0 */
 
-/* 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:
    Ones defined so far include vax, m68000, ns16000, pyramid,
@@ -72,14 +67,6 @@
 #define m68000
 #endif
 
-/* 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