TODO revision 1.6 
11.1SaugustssSome things that need to be done in no particular order:
21.1Saugustss
31.1SaugustssImplement isochronous transfer mode.
41.1Saugustss
51.1SaugustssImplement audio driver.
61.1Saugustss
71.2SaugustssDo bandwidth accounting.
81.2Saugustss
91.2SaugustssUse lock manager locks.
101.2Saugustss
111.5SaugustssUse the pool allocator for TDs et al.
121.5Saugustss
131.5SaugustssMerge soft_td and td in uhci.c.
141.6Saugustss
151.6SaugustssRedo toggle handling in UHCI driver.
161.6Saugustss
171.6SaugustssTidy up transfer completion.
181.6Saugustss
191.6SaugustssThrow out more USBDI gunk.
20