WE NEED:

	- about 4K of BSS space for ethernet buffers
	- about 6K of code

BOOT FROM DISK (UTHERBOOT.BIN)

	- loads in at $0800
	- copies monitor rom to same spot in language card (F800-FFFF)
	- relocates to $D000-$C000 in the language card (bank 1 only)
	- makes language card active (bank 1)
	- downloads BOOTA2.BIN via tftp
	- turns off language card
	- jumps to start of of BOOTA2.BIN