--- a/src/m/delta.h	Mon Aug 13 11:33:40 2007 +0200
+++ b/src/m/delta.h	Mon Aug 13 11:35:02 2007 +0200
@@ -26,11 +26,6 @@
    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:
    Ones defined so far include vax, m68000, ns16000, pyramid,
@@ -39,14 +34,6 @@
 #define m68000
 #define MOTOROLA_DELTA
 
-/* 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 */
@@ -61,15 +48,6 @@
 
 /* #define CANNOT_DUMP */
 
-/* Define VIRT_ADDR_VARIES if the virtual addresses of
-   pure and impure space as loaded can vary, and even their
-   relative order cannot be relied on.
-
-   Otherwise Emacs assumes that data space precedes text space,
-   numerically.  */
-
-/* #define VIRT_ADDR_VARIES */
-
 /* Define C_ALLOCA if this machine does not support a true alloca
    and the one written in C should be used instead.
    Define HAVE_ALLOCA to say that the system provides a properly
@@ -87,20 +65,6 @@
 
 #define NO_REMAP
 
-/* Some really obscure 4.2-based systems (like Sequent DYNIX)
- * do not support asynchronous I/O (using SIGIO) on sockets,
- * even though it works fine on tty's.  If you have one of
- * these systems, define the following, and then use it in
- * config.h (or elsewhere) to decide when (not) to use SIGIO.
- *
- * You'd think this would go in an operating-system description file,
- * but since it only occurs on some, but not all, BSD systems, the
- * reasonable place to select for it is in the machine description
- * file.
- */
-
-/* #define NO_SOCK_SIGIO */
-
 
 /* Machine specific stuff */
 #define HAVE_PTYS