nexys3: add led debugging, improve frequency
Add undef for unused IO bits
bootloader: move assembly into assembly file
s3esk: fix some parts
simulator: properly handle interrupts, SPI flash enhancements
bootloader: remove atmel flash, remove verbose
simulator: remove debug
simulator: fix halt
simulator: refix halt
hyperion: reorder HDL
Nexys2: disable fmul16
simulation: implement more instructions
bootloader: add loadsketch, increment version
sim: add fmul16
Add constant "Undefined" to zpu_configs.
Merge pull request #4 from ivanjh/pullreq

Accepted: "Add constant "Undefined" to zpu_configs.".
Merge branch 'master' of github.com:alvieboy/ZPUino-HDL
devices: add new seven segment driver
sevenseg: add missing signals on sensitivity list
sevenseg: remove initial values