Updated INSTALL files for DOS and TOPS20.

diff --git a/INSTALL_DOS b/INSTALL_DOS
index 3106a6eae58e83c9165fefdfb7c1504b4e0ff376..a58fa917fcc25db466c01b2f6ea81896661e085b 100644 (file)
--- a/INSTALL_DOS
+++ b/INSTALL_DOS
@@ -104,7 +104,9 @@ Here we go!
     archive.  This will create a directory named "snavig/" containing
     source code all set up for compilation.  Zip up this directory and
     get it into your DOS machine.  The zip file will easily fit onto a
-    single 360K floppy.
+    single 360K floppy.  Snavig requires the use of GNU sed, so if
+    you're on macOS, BSD, or some other non-Linux platform; install GNU
+    sed before proceeding.
 
 2.  Back on the DOS machine, unzip the snavig archive into a directory
     on the hard drive.  Go into it and edit the file "defs.h".  This is

diff --git a/INSTALL_PDP10 b/INSTALL_PDP10
index 64e9f33594af8d4524db39864be8de7d91d16200..5295204004e5325763033ac0deeef0a1cd946bd2 100644 (file)
--- a/INSTALL_PDP10
+++ b/INSTALL_PDP10
@@ -22,8 +22,12 @@ http://panda.trailing-edge.com/ and the KCC C compiler which is included.
 To compile, do "make tops20".  This will copy the needed source files to
 the "snavig/" directory and process them to fit TOPS20's limit of six
 alphanumeric caps-insensitive characters on extern symbols and
-filenames.  The contents of this directory then needs to be uploaded to
-a subdirectory on a PDP10.  Then while in the directory with the source,
+filenames.  This requires the GNU version of sed.  So if you're on
+macOS, *BSD, or something else non-GNU; install GNU sed before
+proceeding.
+
+The contents of this "snavig/" directory then needs to be uploaded to a
+subdirectory on a PDP10.  Then while in the directory with the source,
 the following command will then compile and link the code to produce an
 executable: