This part is contributed by Cdric Bail.

There is a major problem with a 64-bit division unit
in a circuit where only 8-bit add/subs are allowed
in a clock cycle. Cdric has investigated 8-bit divisions,
and it's not always fun. Groundbreaking techniques are
wanted.

Remember that if you can't use this unit, the multiplier
can be used to compute the reciprocal of the divisor
(with the Newton-Raphson technique) and then a simple
multiply followed by a shift will do the integer part.
And it is pipelinable :o)

YG
