[ILUG] Re: IDE questions

[Wesley Darlington]

Hi,

On Thu, Apr 13, 2000 at 04:46:41PM +0100, Paul Mc Auley wrote:
> On Thu, 13 Apr 2000 11:32:34 -0400 
> "D ONeill" <d.oneill at ireland.com>  wrote:
> 
> | IDE cables are available off the shelf in lengths up to 34" here at http://www.microwarehouse.com.
> | That being said, I made up a 40" cable for 1 of my boxen and haven't experienced any problems.
> | But I'm not dealing with mission critical.
>  
> It's also worth remembering that the requirement for UDMA66 is a max of 18".

Speaking of udma66, what's the deal with these fancy udma cables with 80
conductors? Since there are only 40 pins at either end, what's the deal
with having 80 conductors. Do 40 go to one hard drive and 40 to another?
Can one do udma66 with a 40 conductor cable? While I'm asking da questions,
what's different between udma33 and udma66 apart from speed? Does 33->66
imply some difference in the ata command set?

Thanks,
Wesley.