EclaireXL

Added return to boot menu to a800 mcc cores

start of USB support - ram timing issue fixed

Instantiate USB host. Next need to wire to ZPU, then make ZPU firmware talk to some USB devices via this...

Added zpu. Fix sdram 32-bit mode.

Cascaded pll in order to get exact SVIDEO frequencies

First cut with svideo, all versions from generic

First version that boots with sdram

Wired up helloworld example to mcc216. Works!

Current unmerged vhdl for my Atari800 core and start at merging them into one tree with a common core