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diff --git a/electronics/fpga-toolchain.page b/electronics/fpga-toolchain.page
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+FPGA Toolchain Notes
+==========================
+
+Setup Xilinx 13.3 WebPack on Ubuntu 11.10 64bit
+-------------------------------------------------
+
+Installer archive is ~5gb, extracted will be about 5gb, install will be about
+14gb. You'll probably need root. 
+
+Download the appropriate WebPack ISE archive from the Xilinx website; you'll
+need to create an `account <http://bugmenot.com>`_. While the download is
+running, generate a WebPack license file (Xilinx.lic) and save that to your
+home folder. 
+
+    $ mkdir /tmp/ise_install
+    $ cd /tmp/ise_install
+    $ tar xvf ~/Xilinx_ISE_DS_Lin_13.3_O.76xd.1.0.tar 
+    $ cd Xilinx_ISE_DS_Lin_13.3_O.76xd.1.0/
+    $ sudo ./xsetup     # install as root!
+
+    # agree to license agreements
+    #
+    # select WebPack
+    #
+    # defaults for license: "Acquire or Manage..." and "Ensure Linux
+    # System...". "Install Cable Drivers" failed for me. 
+    #
+    # extract to /opt/Xilinx/13.3
+    #
+    # in the license manager that pops up, go straight to "manage licenses" and
+    # import the one you generated
+    #
+    # done!
+
+To start the IDE run `/opt/Xilinx/13.3/ISE_DS/ISE/bin/lin64/ise` (set it up as
+an alias or with a wrapper script).
+
diff --git a/electronics/microcontrollers.page b/electronics/microcontrollers.page
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+===================
+Microcontrollers
+===================
+
+LISPs on MCUs
+--------------
+
+See also: article on extremely small interpreters for code density. 
+
+Hedgehog (http://hedgehog.oliotalo.fi/) is a variant of LISP for embedded chips
+released under a BSD (library) and LGPL (tools) license. It has some debugging
+tools and can run on x86 as well for development. The model is to compile
+bytecode on a development machine and execute it on the MCU; there is no REPL
+on the device itself. Developed and maintained by a Finish company (.fi TLD?)
+mostly for use distibuting new bytecode programs. Implementation is well
+documented.
+
+PICBIT is one of a series (BIT and PICOBIT) of Scheme implementations for very
+small (few kb RAM) chips. Code is compiled to bytecode on a development machine
+and run/interpreted on the device. This is a mature academic project; there are
+a couple papers which summarize the approach and design decisions. 
+
+ARMPIT Scheme (http://armpit.sourceforge.net/) is a full embeded Scheme
+environment for ARM MCUs (including Cortex-M3s). It is an active project
+written in 
+
+"L" is a Common LISP implementation for embedded MCUs with about a MB of RAM;
+it was an MIT AI Lab project. A real time operating system written in C (VENUS)
+runs on the metal and an L framework called MARS coordinates message/event
+handling between multiple agents. It was written for robotic research. 
+