The origin of the phrases ATA and IDE [WAS:RE: formatting MFM drives on a IBM PC]

Chuck Guzis cclist at
Thu Oct 5 14:31:04 CDT 2017

On 10/05/2017 11:39 AM, Rich Alderson via cctalk wrote:
> From: Chuck Guzis
> Sent: Wednesday, October 04, 2017 1:46 PM
>> As an aside, I picked up a 1986 Wren II full-height manual that discussed the
>> drive and its various interfaces.  Sadly, IDE isn't one, but SCSI is referred
>> to as "SASI Subset"; i.e. "SCSI (SASI subset)"
> I believe that you're reading that backwards.  What it says is that this is a
> SCSI-compatible device which employs only the SASI subset of SCSI commands, not
> that "SCSI" is a subset of "SASI".

Okay, that makes sense, even if it is a bit confusing--I recall that the
SASI disk drive protocol was pretty simple.


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