IDE <-> MFM
cisin at xenosoft.com
Thu Nov 27 14:41:26 CST 2008
> >> had a pre-standardization ISA IDE "controller" that cabled to a bridge
> >> board on an MFM drive
> > . . .
> > Isn't that the other way around, though: IDE controller -> bridge -> MFM
On Thu, 27 Nov 2008, Christian Corti wrote:
> That doesn't make sense. IDE stands for Integrated Drive Electronics,
> which means that the controller is located on the drive. Therefore IDE
> controller cards don't exist,
THAT is why I put "controller" in quotes. It is NOT a "controller", it
is some sort of addrress decoding and cabling "adapter".
> and you can't bride IDE to an ST-412
depending on your definition of "bridge", you CAN "adapt"/"bridge"
the cabling from an ISA "adapter" to a disk controller that "stands
alone" (not plugged in to the bus), and from that to an ST406 drive.
While you are at it, you should also point out that it is far from correct
to refer to the interface of the older drive as "MFM", since that is the
encoding, NOT the cabling/interface. An IDE or SCSI drive could certainly
be using MFM or RLL (MFM can also be argued to be one implementation of
And this thing with no moving parts that I cram into the USB port should
not be called a "drive", even if Windoze sees it as one.
Grumpy Ol' Fred cisin at xenosoft.com
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