> I'm looking into getting a faster, bigger hard drive. The drives on
> the shelf at the local computer stores all list ATA/100 or ATA/133. I
> see articles on the net on IDE/ATA vs SCSI. So, is ATA the same as
> IDE? If not, what's the relationship?
IDE was originally noting more than a buffered extension of the IBM
PC/AT bus over a cable, to a hard drive that emulated a Western Digital
1003/1006 hard drive controller. It integrated the controller and the
drive electronics into a single component (the Integrated (or IBM)
Drive Electronics). The interface itself didn't rally have a name until
later, it was just the "PC/AT interface".
Master-slave involved having the two drives cooperate in emulating a
single WD1003 controller with two drives attached. The WD1003 and the
ST506 drives it connected to addressed the disk surface directly, which
is why drives still have cylinder, head, and sector numbers long after
they quit organizing drives with a fixed number of sectors per track.
For CDROM support, they tried several things, starting with sort of
emulating a SCSI controller... which is why the first IDE CDROMs needed
a cable all their own.
The general reaction to this was shock and awe. Shock at the collection
of kludges it involved, awe that they could actually make it work.
Anyway, the name "AT Attachment" was picked for the general interface,
with IDE and Extended IDE for the hard drives, and ATA or ATAPI (ATA Packet
Interface) first being used when referring to the CDROMs.
I've seen things you people can't imagine. Chimneysweeps on fire over the roofs
of London. I've watched kite-strings glitter in the sun at Hyde Park Gate. All
these things will be lost in time, like chalk-paintings in the rain. `-_-'
Time for your nap. | Peter da Silva | Har du kramat din varg, idag? 'U`