Re: isapnp probe is slow

[David Laight <david%l8s.co.uk@localhost>]

On Sat, Mar 29, 2008 at 11:46:26PM +0000, Andrew Doran wrote:
> > > 
> > > Would disabling isapnp based on the age of the system make sense?
> > > Alternatively, what other ways are there to speed it up?
> > 
> > I thought the isapnp grope was relatively fast?
> 
> I think it takes about 4 seconds or so.

WTF is it doing - I've written the isapnp enumeration algorithm (a long
time ago) and don't remember it requiring any long delays.

I've found a definition of the algorithm...
32 iows, 1ms delay, followed by 72 iors alternating 30us and 250us delays.

That ought to be a small fraction of a second - even if it has to be
repeated because the selection 'read' port is otherwise assigned.

        David

-- 
David Laight: david%l8s.co.uk@localhost