Initial version
speed things up: z80 runs at 250 kHz now

make use of macros
removed Z80 code from AVR source

disabled debugging pin
replaced tabs by spaces

added vim modeline

no other changes
Added description and schematic to readme file
added Z80 native code support library

added Z80 native code example
added build instructions
added current project status to readme file

minor readme file fixes
resized ROM to 6 pages

improved example code

minor readme file fixes
changed wiring to support two more address lines

changed code accordingly
Squashed commit of the following:

commit 7f8342c7037c140a2bf5ddfee5e84fc016527399
Author: Daniel <inxonic@localhost>
Date:   Thu May 30 22:31:10 2013 +0200

    fixed image location

commit e38dd648a209e62f210097fbc737b874e6879d0e
Author: Daniel <inxonic@localhost>
Date:   Thu May 30 22:23:31 2013 +0200

    added board image