From 77ba9809e7dcf25c2b5efecd1c38c2a4cf19238c Mon Sep 17 00:00:00 2001
From: Warren Toomey <wkt@tuhs.org>
Date: Tue, 8 Mar 2016 06:48:06 +1000
Subject: [PATCH] Fixed a small tty handling bug.

---
 tools/a7out | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/a7out b/tools/a7out
index 8da1bd7..01ed008 100755
--- a/tools/a7out
+++ b/tools/a7out
@@ -944,7 +944,7 @@ sub sys_read {
 	    }
             $Mem[$addr] = $word;
 	    $count++;
-	    last if ($tty && ($c1 eq "\n") || ($c2 eq "\n"));
+	    last if ($tty && (($c1 && ($c1 eq "\n")) || ($c2 &&($c2 eq "\n"))));
         } # ascii
     }