--- a/src/m/elxsi.h	Mon Aug 13 11:19:22 2007 +0200
+++ b/src/m/elxsi.h	Mon Aug 13 11:20:41 2007 +0200
@@ -28,6 +28,11 @@
 /* This file was modified by Matt Crawford <matt@tank.uchicago.edu>
    to work under Elxsi's 12.0 release of BSD unix. */
 
+/* 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:
    vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
@@ -37,6 +42,15 @@
 #define elxsi
 #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
+
+
 /* Name of kernel load average variable */
 
 #undef LDAV_SYMBOL