Re: ULTRA ATA/100 announced

From: James Sutherland (jas88@cam.ac.uk)
Date: Wed Jun 07 2000 - 08:28:26 EST


On Wed, 7 Jun 2000, Jesse Pollard wrote:

(snip)

> > ok, you might argue that you only have N slots in your machine --
> > there are some pretty nice quad-tulip cards available, i don't see why
> > people shouldn't make quad-IDE controllers (2 busses per controller =>
> > 16 devices.)
>
> 16 devices / 2 = 8 busses = 8 controllers, 8 IO addresses, I'll grant
> that maybe only one IRQ.
>
> 4 controllers = 8 drives. not 16.

Nope. 4 controller chips => 8 channels => 16 devices. IDE channels come in
pairs.

James.

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