--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/s/rtu.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,101 @@
+/* Definitions file for GNU Emacs running on RTU 3.0, ucb universe.
+   Copyright (C) 1986 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: FSF 19.31. */
+
+/*
+ *	Define symbols to identify the version of Unix this is.
+ *	Define all the symbols that apply correctly.
+ */
+
+#define BSD4_2
+#define BSD
+#define RTU
+
+/* SYSTEM_TYPE should indicate the kind of system you are using.
+ It sets the Lisp variable system-type.  */
+
+#define SYSTEM_TYPE "rtu"
+
+/* Letter to use in finding device name of first pty,
+  if system supports pty's.  'a' means it is /dev/ptya0  */
+
+#define FIRST_PTY_LETTER 'z'	/* i.e. no PTY_LETTERs */
+
+/*
+ *	Define HAVE_PTYS if the system supports pty devices.
+ */
+
+#define HAVE_PTYS
+
+/* Define this macro if system defines a type `union wait'.  */
+
+#define HAVE_UNION_WAIT
+
+/* The system library bcopy() is broken in RTU.  For one thing, it expects
+   the length to be less than 64k. */
+#define BROKEN_BCOPY
+
+/* If your system uses COFF (Common Object File Format) then define the
+   preprocessor symbol "COFF". */
+
+#undef COFF
+
+/* define MAIL_USE_FLOCK if the mailer uses flock
+   to interlock access to /usr/spool/mail/$USER.
+   The alternative is that a lock file named
+   /usr/spool/mail/$USER.lock.  */
+
+#undef MAIL_USE_FLOCK
+
+/* The symbol in the kernel where the load average is found
+   is named _avenrun.  */
+
+#define LDAV_SYMBOL "_avenrun"
+
+/* Special hacks needed to make Emacs run on this system.  */
+
+/* On RTU systems (like USG) the system calls are interruptible by signals
+ that the user program has elected to catch.  Thus the system call
+ must be retried in these cases.  To handle this without massive
+ changes in the source code, we remap the standard system call names
+ to names for our own functions in sysdep.c that do the system call
+ with retries. */
+
+#define INTERRUPTIBLE_OPEN
+#define INTERRUPTIBLE_IO
+
+/* The "fsync" call on RTU versions 3.0 and 3.1 is badly broken!
+   This hack below isn't the best solution, but without it this
+   program will cause the whole system to hang!  !@#$#%$ Masscomp!  */
+
+#define fsync(x) 0	/* "Comment out" fsync calls */
+
+/* This is how to get the device name of the tty end of a pty.  */
+#define PTY_TTY_NAME_SPRINTF \
+            sprintf (pty_name, "/dev/ttyp%x", i);
+
+/* This is how to get the device name of the control end of a pty.  */
+#define PTY_NAME_SPRINTF \
+	sprintf (pty_name, "/dev/pty%x", i);
+
+/* Formerly "BSD_PGRPS" */
+
+#define SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP