If EIDE (ATA-2) Allows 4 Devices Per IDE Controller...

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How come I've never seen this in operation or seen any IDE ribbons for 4 devices?

And why do IDE devices have jumpers for Master and Slave but not for 4 settings?

In fact I never knew I could connect up to 8 IDE devices onto my machine (4 per IDE controller) until I read it just now.

Is this correct?

 

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Well If you can its news to me aswell, coz I never knew that.

 

Just had a read some pages I found on google - it seems back in the olden days motherboards only had 1 IDE channel = max of 2 IDE devices.

When EIDE came out, motherboards had 2 IDE controllers = max of 4 IDE devices (2 per controller).

So if you are reading this Mr Christopher A. Crayton (of The A+ Exams Guide fame) then it appears you are wrong.

 

For the purpose of your A+ studies, know that a typical motherboard will host 2 IDE channels and 1 IDE controller.You may have no more than 2 IDE devices on each channel giving a total of 4 IDE devices.

Watch out for these details in your exam,a CONTROLLER allows up to 4 devices,a CHANNEL supports up to 2 devices.

 

Blimey I'm glad that one didn't turn up in my exam or I'd have got it wrong!

Nicely put Mal!

J.

 

Cheers

(My book's still wrong though - it says:

"[EIDE] is an improvement on the original IDE/ATA standard that allows for up to four devices to be connected to one motherboard interface controller, for a total of eight devices in a typical system."

That last bit must wrong if a typical system has 1 IDE controller.)

 

Yeah, nice one Mal. It is the type of question that can trip you up in the exam...

 

Standard BIOSes can have up to 8 drives on the system.

To do this you need 4 sockets (2 drives per socket).

Most motherboards ship with only 2 sockets, but a few have 4.

If you only have 2 then you can fit a PCI board to give you the other 2.

Harry.