The origin of SCSI [WAS:RE: The origin of the phrases ATA and IDE ]

Geoffrey Oltmans oltmansg at
Fri Oct 6 12:10:50 CDT 2017

On Thu, Oct 5, 2017 at 1:50 PM, Chuck Guzis via cctalk <
cctalk at> wrote:

> You could well be right--I do recall that there was "Mac SCSI" and then
> the slightly different "Everyone else's SCSI".  I ran into this when
> talking with some SMS/OMTI engineers about an ST506-to-SCSI bridge board
> that I have.  Their reaction was "Oh, that's Mac SCSI--you want real SCSI".
Supposedly the Mac Plus SCSI implementation is slightly broken/non-standard
(or at least draft standard), either in its drivers or the SCSI controller
chip, so maybe that's what they were referring to.

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