> Now the problem is, nothing happens.  The cable is plugged in, with the
> other end hooked up to a printer (which is known to work; it works fine
> on the parallel port of my /i386 machine).  And the bpp driver seems to
> think it's pumping bits out.  But the printer just sits there looking
> stupid, rather than actually doing anything.


You may want to experiment a bit with various timing parameters that
can be set in various configuration registers. For unidirectional
operation, at least the data strobe delay and data strobe width
may need to be setup with proper values, though I have no idea
what those values should be.