diff --git a/Error-log b/Error-log
index 45e6244..35a1a53 100644
--- a/Error-log
+++ b/Error-log
@@ -93,7 +93,10 @@ Makefile.in needs to rerun ranlib after installing libscshvm.a
 Reported by Robert E. Brown. Fix by bdc 4 Nov 96
 
 signals-ignored-by-default for ultrix
-Reported by Jay Nietling. Fix by ??????????
+Reported by Jay Nietling. Fix by bdc 4 Nov 96
+
+signals-ignored-by-default for irix
+Reported by Richard Kelsey. Fix by bdc 4 Nov 96
 
 Starting up programs with the "-e <entry-point>" command-line
 switch and with the (DUMP-SCSH-PROGRAM <file-name> <entry-point>)
diff --git a/RELEASE b/RELEASE
index 21357d6..fd720f6 100644
--- a/RELEASE
+++ b/RELEASE
@@ -178,15 +178,16 @@ We even have one of those URL things:
 * Thanks
 ========
 
-We would like to thank Michael Becker, Glenn Barry, Travis Broughton, Robert
-E. Brown, Charlie Conklin, Franklin Chen, Jin S. Choi, Douglas S. J. De Couto,
-Brian F. Dennis, Sean Doran, Kevin Esler, Lutz Euler, Lewis Girod, Dan
-Hagerty, Rolf-Thomas Happe, David Hull, Steven L. Jenkins, Patrick May, Jay
-Nietling, Tod Olson, Michel Schinz, Cotton Seed, Bill Sommerfeld, Michael
-Sperber, Steven L. Tamm, Ed Tobin, Victor Zandy, and others for bug reports,
-bug fixes, and comments that were incorporated into this release. We really
-appreciate their help, particularly in the task of porting scsh to new
-platforms.
+We would like to thank Michael Becker, Glenn Barry, Travis Broughton,
+Robert E. Brown, Charlie Conklin, Franklin Chen, Jin S. Choi, Douglas
+S. J. De Couto, Brian F. Dennis, Sean Doran, Kevin Esler, Lutz Euler,
+Lewis Girod, Dan Hagerty, Rolf-Thomas Happe, David Hull, Steven L.
+Jenkins, Patrick May, Richard Kelsey, Jay Nietling, Tod Olson,
+Jonathan Rees, Michel Schinz, Cotton Seed, Bill Sommerfeld, Michael
+Sperber, Steven L. Tamm, Ed Tobin, Victor Zandy, and others for bug
+reports, bug fixes, and comments that were incorporated into this
+release. We really appreciate their help, particularly in the task of
+porting scsh to new platforms.
 
 We'd like to thank everyone else for their patience; this release seemed like
 a long time coming.
diff --git a/scsh/irix/signals.scm b/scsh/irix/signals.scm
index 0d0f2ad..5d35013 100644
--- a/scsh/irix/signals.scm
+++ b/scsh/irix/signals.scm
@@ -41,3 +41,7 @@
   (xcpu	31)	; Cpu time limit exceeded
   (xfsz	32)	; Filesize limit exceeded
   )
+
+(define signals-ignored-by-default
+  (list signal/chld signal/cont				 ; These are Posix.
+	signal/pwr signal/poll signal/urg signal/winch)) ; These are Irix.
diff --git a/scsh/ultrix/signals.scm b/scsh/ultrix/signals.scm
index 5e9f3fb..416dbb0 100644
--- a/scsh/ultrix/signals.scm
+++ b/scsh/ultrix/signals.scm
@@ -1,4 +1,4 @@
-;;; Signal constant definitions for "generic"
+;;; Signal constant definitions for Ultrix
 ;;; Copyright (c) 1994 by Olin Shivers.
 ;;; Copyright (c) 1994 by Brian D. Carlstrom.
 
@@ -16,6 +16,9 @@
   (emt	7)	; EMT instruction 
   (fpe	8)	; floating point exception 
   (kill	9)	; kill (cannot be caught or ignored) 
+  ;; Ultrix
+  (bus 10)
+  ;; POSIX
   (segv	11)	; segmentation violation
   (sys  12)     ; bad argument to system call
   (pipe	13)	; write on a pipe with no one to read it 
@@ -41,3 +44,7 @@
   (usr1 30)	; user defined signal 1 
   (usr2 31)	; user defined signal 2 
   )
+
+(define signals-ignored-by-default
+  (list signal/cont signal/chld
+	signal/urg signal/io signal/winch))