Finished bucket 0000!

So, finally finished every instruction in bucket 0000. Haven't SUPER
stressed test each decoding, but it works more or less.

NOTE: I commented two lines of i/o stuff. At the very start of
Grab_next_op, the:
CMPI.L    #00,D6
BEQ    CONT_Q
kept me going in an infinite loop, asking for my starting/ending address
over and over.