diff --git a/etc/gettytab b/etc/gettytab
index ceba91e47b44..75d80e008efe 100644
--- a/etc/gettytab
+++ b/etc/gettytab
@@ -206,3 +206,18 @@ A|Auto-baud:\
 
 autologin|al.9600:\
 	:al=root:tc=std.9600:
+
+# 
+# Entries for 3-wire serial terminals.  These don't supply carrier, so
+# clocal needs to be set, and crtscts needs to be unset.
+#
+3wire.9600|9600-3wire:\
+	:np:nc:sp#9600:
+3wire.38400|38400-3wire:\
+	:np:nc:sp#38400:
+3wire.57600|57600-3wire:\
+	:np:nc:sp#57600:
+3wire.115200|115200-3wire:\
+	:np:nc:sp#115200:
+3wire.230400|230400-3wire:\
+	:np:nc:sp#230400: