diff --git a/board/gth/README b/board/gth/README
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+Written by Thomas.Lange@corelatus.com 010805
+
+To make a system for gth that actually works ;-)
+the variable TBASE needs to be set to 0,1 or 2
+depending on location where image is supposed to
+be started from.
+E.g. make TBASE=1
+
+0: Start from RAM, base 0
+
+1: Start from flash_base + 0x10070
+
+2: Start from flash_base + 0x30070
+
+When using 1 or 2, the image is supposed to be launched
+from miniboot that boots the first U-Boot image found in
+flash.
+For miniboot code, description, see www.opensource.se
+
+