diff --git a/configs/xtrs/README.txt b/configs/xtrs/README.txt
index 72ef1d29b1..f40e859fa2 100644
--- a/configs/xtrs/README.txt
+++ b/configs/xtrs/README.txt
@@ -1,12 +1,37 @@
 xtrs README
 ^^^^^^^^^^^^^
 
-TRS80 Model 3.  This port uses a vintage computer based on the Z80.
+Current status
+^^^^^^^^^^^^^^
+
+The xtrs port is not operational yet; some work still needs to be done.
+
+Getting a TRS80 emulator and DOS disks
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+This port uses a vintage computer based on the Z80, the TRS80.
+There's a main page describing the different models of TRS80.
+See: http://www.trs-80.com
+
 An emulator for this computer is available to run TRS80 programs on a 
 linux platform (http://www.tim-mann.org/xtrs.html).
 
+Other emulators are available for other platforms. 
+See http://www.trs-80.com, click on the link Emulators.
+
+TRSDOS, LDOS and other softwares are available at:
+http://discover-net.net/~dmkeil/trs80/software/trs-dos.htm
+
+Or you can get TRSDOS 1.3 and 6.1 from this site; it's included with the emulator.
+http://discover-net.net/~dmkeil/trs80/model4.htm
+
 The SDCC toolchain is available from http://sdcc.sourceforge.net/.  All
-testing has been performed using version 2.6.0 of the SDCC toolchain.
+testing has been performed using version 2.7.0 of the SDCC toolchain.
+
+Loading an executable into xtrs
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+At http://www.trs-80.com click on the link: Getting a Software Onto an Emulator.
 
 Configuring NuttX
 ^^^^^^^^^^^^^^^^^
diff --git a/configs/xtrs/src/Make.defs b/configs/xtrs/src/Make.defs
new file mode 100644
index 0000000000..d077ca6459
--- /dev/null
+++ b/configs/xtrs/src/Make.defs
@@ -0,0 +1,37 @@
+############################################################################
+# configs/xtrs/src/Make.defs
+#
+#   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+HEAD_ASRC = xtrs_head.asm
+