Checked hw-working code into SVN...

Finally cracked serial port and clock setup on real hardware tonight. I was also able to set up the PLL to run the chip at 50mhz - and even over clock it to 100mhz. :)

Interrupts don't work yet, but eh.

I think I should write something FORTH-like next so I won't have to flash the chip too much, or at least a super-simple interpreter of some sort for HW bringup.