> 	hd64570 is a synchronous serial chip.  useful for anything that
> wants to do HDLC, and sppp, and whatever.  It's got some problems (like
> being hardwired into TCP/IP and some limits on the size of packets.) that I
> was working on awhile ago but haven't recently.

It might be nice to document this somewhere--even if it's just in the
sources.  This is true of a lot of other files/drivers...

-allen